{ "data": { "edges": [ { "animated": false, "className": "", "data": { "sourceHandle": { "dataType": "ChatInput", "id": "ChatInput-8bLHN", "name": "message", "output_types": [ "Message" ] }, "targetHandle": { "fieldName": "search_query", "id": "ArXivComponent-wpsLb", "inputTypes": [ "Message" ], "type": "str" } }, "id": "reactflow__edge-ChatInput-8bLHN{œdataTypeœ:œChatInputœ,œidœ:œChatInput-8bLHNœ,œnameœ:œmessageœ,œoutput_typesœ:[œMessageœ]}-ArXivComponent-wpsLb{œfieldNameœ:œsearch_queryœ,œidœ:œArXivComponent-wpsLbœ,œinputTypesœ:[œMessageœ],œtypeœ:œstrœ}", "selected": false, "source": "ChatInput-8bLHN", "sourceHandle": "{œdataTypeœ: œChatInputœ, œidœ: œChatInput-8bLHNœ, œnameœ: œmessageœ, œoutput_typesœ: [œMessageœ]}", "target": "ArXivComponent-wpsLb", "targetHandle": "{œfieldNameœ: œsearch_queryœ, œidœ: œArXivComponent-wpsLbœ, œinputTypesœ: [œMessageœ], œtypeœ: œstrœ}" }, { "animated": false, "className": "", "data": { "sourceHandle": { "dataType": "ArXivComponent", "id": 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"DataFrame" ], "type": "other" } }, "id": "reactflow__edge-LanguageModelComponent-ze4nq{œdataTypeœ:œLanguageModelComponentœ,œidœ:œLanguageModelComponent-ze4nqœ,œnameœ:œtext_outputœ,œoutput_typesœ:[œMessageœ]}-TypeConverterComponent-NClYY{œfieldNameœ:œinput_dataœ,œidœ:œTypeConverterComponent-NClYYœ,œinputTypesœ:[œMessageœ,œDataœ,œDataFrameœ],œtypeœ:œotherœ}", "selected": false, "source": "LanguageModelComponent-ze4nq", "sourceHandle": "{œdataTypeœ: œLanguageModelComponentœ, œidœ: œLanguageModelComponent-ze4nqœ, œnameœ: œtext_outputœ, œoutput_typesœ: [œMessageœ]}", "target": "TypeConverterComponent-NClYY", "targetHandle": "{œfieldNameœ: œinput_dataœ, œidœ: œTypeConverterComponent-NClYYœ, œinputTypesœ: [œMessageœ, œDataœ, œDataFrameœ], œtypeœ: œotherœ}" }, { "animated": false, "className": "", "data": { "sourceHandle": { "dataType": "TypeConverterComponent", "id": "TypeConverterComponent-NClYY", "name": "data_output", "output_types": [ "Data" ] }, "targetHandle": { "dataType": "LoopComponent", "id": "LoopComponent-GV15E", "name": "item", "output_types": [ "Data" ] } }, "id": "reactflow__edge-TypeConverterComponent-NClYY{œdataTypeœ:œTypeConverterComponentœ,œidœ:œTypeConverterComponent-NClYYœ,œnameœ:œdata_outputœ,œoutput_typesœ:[œDataœ]}-LoopComponent-GV15E{œdataTypeœ:œLoopComponentœ,œidœ:œLoopComponent-GV15Eœ,œnameœ:œitemœ,œoutput_typesœ:[œDataœ]}", "selected": false, "source": "TypeConverterComponent-NClYY", "sourceHandle": "{œdataTypeœ: œTypeConverterComponentœ, œidœ: œTypeConverterComponent-NClYYœ, œnameœ: œdata_outputœ, œoutput_typesœ: [œDataœ]}", "target": "LoopComponent-GV15E", "targetHandle": "{œdataTypeœ: œLoopComponentœ, œidœ: œLoopComponent-GV15Eœ, œnameœ: œitemœ, œoutput_typesœ: [œDataœ]}" }, { "animated": false, "className": "", "data": { "sourceHandle": { "dataType": "LoopComponent", "id": "LoopComponent-GV15E", "name": "done", "output_types": [ "DataFrame" ] }, "targetHandle": { "fieldName": "input_value", "id": "ChatOutput-hmMTq", "inputTypes": [ "Data", "DataFrame", "Message" ], "type": "other" } }, "id": "reactflow__edge-LoopComponent-GV15E{œdataTypeœ:œLoopComponentœ,œidœ:œLoopComponent-GV15Eœ,œnameœ:œdoneœ,œoutput_typesœ:[œDataFrameœ]}-ChatOutput-hmMTq{œfieldNameœ:œinput_valueœ,œidœ:œChatOutput-hmMTqœ,œinputTypesœ:[œDataœ,œDataFrameœ,œMessageœ],œtypeœ:œotherœ}", "selected": false, "source": "LoopComponent-GV15E", "sourceHandle": "{œdataTypeœ: œLoopComponentœ, œidœ: œLoopComponent-GV15Eœ, œnameœ: œdoneœ, œoutput_typesœ: [œDataFrameœ]}", "target": "ChatOutput-hmMTq", "targetHandle": "{œfieldNameœ: œinput_valueœ, œidœ: œChatOutput-hmMTqœ, œinputTypesœ: [œDataœ, œDataFrameœ, œMessageœ], œtypeœ: œotherœ}" } ], "nodes": [ { "data": { "id": "ArXivComponent-wpsLb", "node": { "base_classes": [ "DataFrame" ], "beta": false, "conditional_paths": [], "custom_fields": {}, "description": "Search and retrieve papers from arXiv.org", "display_name": "arXiv", "documentation": "", "edited": false, "field_order": [ "search_query", "search_type", "max_results" ], "frozen": false, "icon": "arXiv", "legacy": false, "lf_version": "1.4.3", "metadata": {}, "minimized": false, "output_types": [], "outputs": [ { "allows_loop": false, "cache": true, "display_name": "DataFrame", "group_outputs": false, "method": "search_papers_dataframe", "name": "dataframe", "selected": "DataFrame", "tool_mode": true, "types": [ "DataFrame" ], "value": "__UNDEFINED__" } ], "pinned": false, "template": { "_type": "Component", "code": { "advanced": true, "dynamic": true, "fileTypes": [], "file_path": "", "info": "", "list": false, "load_from_db": false, "multiline": true, "name": "code", "password": false, "placeholder": "", "required": true, "show": true, "title_case": false, "type": "code", "value": "import urllib.request\nfrom urllib.parse import urlparse\nfrom xml.etree.ElementTree import Element\n\nfrom defusedxml.ElementTree import fromstring\n\nfrom langflow.custom.custom_component.component import Component\nfrom langflow.io import DropdownInput, IntInput, MessageTextInput, Output\nfrom langflow.schema.data import Data\nfrom langflow.schema.dataframe import DataFrame\n\n\nclass ArXivComponent(Component):\n display_name = \"arXiv\"\n description = \"Search and retrieve papers from arXiv.org\"\n icon = \"arXiv\"\n\n inputs = [\n MessageTextInput(\n name=\"search_query\",\n display_name=\"Search Query\",\n info=\"The search query for arXiv papers (e.g., 'quantum computing')\",\n tool_mode=True,\n ),\n DropdownInput(\n name=\"search_type\",\n display_name=\"Search Field\",\n info=\"The field to search in\",\n options=[\"all\", \"title\", \"abstract\", \"author\", \"cat\"], # cat is for category\n value=\"all\",\n ),\n IntInput(\n name=\"max_results\",\n display_name=\"Max Results\",\n info=\"Maximum number of results to return\",\n value=10,\n ),\n ]\n\n outputs = [\n Output(display_name=\"DataFrame\", name=\"dataframe\", method=\"search_papers_dataframe\"),\n ]\n\n def build_query_url(self) -> str:\n \"\"\"Build the arXiv API query URL.\"\"\"\n base_url = \"http://export.arxiv.org/api/query?\"\n\n # Build the search query\n search_query = f\"{self.search_type}:{self.search_query}\"\n\n # URL parameters\n params = {\n \"search_query\": search_query,\n \"max_results\": str(self.max_results),\n }\n\n # Convert params to URL query string\n query_string = \"&\".join([f\"{k}={urllib.parse.quote(str(v))}\" for k, v in params.items()])\n\n return base_url + query_string\n\n def parse_atom_response(self, response_text: str) -> list[dict]:\n \"\"\"Parse the Atom XML response from arXiv.\"\"\"\n # Parse XML safely using defusedxml\n root = fromstring(response_text)\n\n # Define namespace dictionary for XML parsing\n ns = {\"atom\": \"http://www.w3.org/2005/Atom\", \"arxiv\": \"http://arxiv.org/schemas/atom\"}\n\n papers = []\n # Process each entry (paper)\n for entry in root.findall(\"atom:entry\", ns):\n paper = {\n \"id\": self._get_text(entry, \"atom:id\", ns),\n \"title\": self._get_text(entry, \"atom:title\", ns),\n \"summary\": self._get_text(entry, \"atom:summary\", ns),\n \"published\": self._get_text(entry, \"atom:published\", ns),\n \"updated\": self._get_text(entry, \"atom:updated\", ns),\n \"authors\": [author.find(\"atom:name\", ns).text for author in entry.findall(\"atom:author\", ns)],\n \"arxiv_url\": self._get_link(entry, \"alternate\", ns),\n \"pdf_url\": self._get_link(entry, \"related\", ns),\n \"comment\": self._get_text(entry, \"arxiv:comment\", ns),\n \"journal_ref\": self._get_text(entry, \"arxiv:journal_ref\", ns),\n \"primary_category\": self._get_category(entry, ns),\n \"categories\": [cat.get(\"term\") for cat in entry.findall(\"atom:category\", ns)],\n }\n papers.append(paper)\n\n return papers\n\n def _get_text(self, element: Element, path: str, ns: dict) -> str | None:\n \"\"\"Safely extract text from an XML element.\"\"\"\n el = element.find(path, ns)\n return el.text.strip() if el is not None and el.text else None\n\n def _get_link(self, element: Element, rel: str, ns: dict) -> str | None:\n \"\"\"Get link URL based on relation type.\"\"\"\n for link in element.findall(\"atom:link\", ns):\n if link.get(\"rel\") == rel:\n return link.get(\"href\")\n return None\n\n def _get_category(self, element: Element, ns: dict) -> str | None:\n \"\"\"Get primary category.\"\"\"\n cat = element.find(\"arxiv:primary_category\", ns)\n return cat.get(\"term\") if cat is not None else None\n\n def run_model(self) -> DataFrame:\n return self.search_papers_dataframe()\n\n def search_papers(self) -> list[Data]:\n \"\"\"Search arXiv and return results.\"\"\"\n try:\n # Build the query URL\n url = self.build_query_url()\n\n # Validate URL scheme and host\n parsed_url = urlparse(url)\n if parsed_url.scheme not in {\"http\", \"https\"}:\n error_msg = f\"Invalid URL scheme: {parsed_url.scheme}\"\n raise ValueError(error_msg)\n if parsed_url.hostname != \"export.arxiv.org\":\n error_msg = f\"Invalid host: {parsed_url.hostname}\"\n raise ValueError(error_msg)\n\n # Create a custom opener that only allows http/https schemes\n class RestrictedHTTPHandler(urllib.request.HTTPHandler):\n def http_open(self, req):\n return super().http_open(req)\n\n class RestrictedHTTPSHandler(urllib.request.HTTPSHandler):\n def https_open(self, req):\n return super().https_open(req)\n\n # Build opener with restricted handlers\n opener = urllib.request.build_opener(RestrictedHTTPHandler, RestrictedHTTPSHandler)\n urllib.request.install_opener(opener)\n\n # Make the request with validated URL using restricted opener\n response = opener.open(url)\n response_text = response.read().decode(\"utf-8\")\n\n # Parse the response\n papers = self.parse_atom_response(response_text)\n\n # Convert to Data objects\n results = [Data(data=paper) for paper in papers]\n self.status = results\n except (urllib.error.URLError, ValueError) as e:\n error_data = Data(data={\"error\": f\"Request error: {e!s}\"})\n self.status = error_data\n return [error_data]\n else:\n return results\n\n def search_papers_dataframe(self) -> DataFrame:\n \"\"\"Convert the Arxiv search results to a DataFrame.\n\n Returns:\n DataFrame: A DataFrame containing the search results.\n \"\"\"\n data = self.search_papers()\n return DataFrame(data)\n" }, "max_results": { "_input_type": "IntInput", "advanced": false, "display_name": "Max Results", "dynamic": false, "info": "Maximum number of results to return", "list": false, "list_add_label": "Add More", "load_from_db": false, "name": "max_results", "placeholder": "", "required": false, "show": true, "title_case": false, "tool_mode": false, "trace_as_metadata": true, "type": "int", "value": 3 }, "search_query": { "_input_type": "MessageTextInput", "advanced": false, "display_name": "Search Query", "dynamic": false, "info": "The search query for arXiv papers (e.g., 'quantum computing')", "input_types": [ "Message" ], "list": false, "list_add_label": "Add More", "load_from_db": false, "name": "search_query", "placeholder": "", "required": false, "show": true, "title_case": false, "tool_mode": true, "trace_as_input": true, "trace_as_metadata": true, "type": "str", "value": "" }, "search_type": { "_input_type": "DropdownInput", "advanced": false, "combobox": false, "dialog_inputs": {}, "display_name": "Search Field", "dynamic": false, "info": "The field to search in", "name": "search_type", "options": [ "all", "title", "abstract", "author", "cat" ], "options_metadata": [], "placeholder": "", "required": false, "show": true, "title_case": false, "toggle": false, "tool_mode": false, "trace_as_metadata": true, "type": "str", "value": "all" } }, "tool_mode": false }, "showNode": true, "type": "ArXivComponent" }, "dragging": false, "id": "ArXivComponent-wpsLb", "measured": { "height": 369, "width": 320 }, "position": { "x": 81.59312530546094, "y": 3.9397854556273906 }, "selected": false, "type": "genericNode" }, { "data": { "id": "ChatOutput-hmMTq", "node": { "base_classes": [ "Message" ], "beta": false, "conditional_paths": [], "custom_fields": {}, "description": "Display a chat message in the Playground.", "display_name": "Chat Output", "documentation": "", "edited": false, "field_order": [ "input_value", "should_store_message", "sender", "sender_name", "session_id", "data_template", "background_color", "chat_icon", "text_color", "clean_data" ], "frozen": false, "icon": "MessagesSquare", "legacy": false, "lf_version": "1.4.3", "metadata": {}, "minimized": true, "output_types": [], "outputs": [ { "allows_loop": false, "cache": true, "display_name": "Output Message", "group_outputs": false, "method": "message_response", "name": "message", "selected": "Message", "tool_mode": true, "types": [ "Message" ], "value": "__UNDEFINED__" } ], "pinned": false, "template": { "_type": "Component", "code": { "advanced": true, "dynamic": true, "fileTypes": [], "file_path": "", "info": "", "list": false, "load_from_db": false, "multiline": true, "name": "code", "password": false, "placeholder": "", "required": true, "show": true, "title_case": false, "type": "code", "value": "from collections.abc import Generator\nfrom typing import Any\n\nimport orjson\nfrom fastapi.encoders import jsonable_encoder\n\nfrom langflow.base.io.chat import ChatComponent\nfrom langflow.helpers.data import safe_convert\nfrom langflow.inputs.inputs import BoolInput, DropdownInput, HandleInput, MessageTextInput\nfrom langflow.schema.data import Data\nfrom langflow.schema.dataframe import DataFrame\nfrom langflow.schema.message import Message\nfrom langflow.schema.properties import Source\nfrom langflow.template.field.base import Output\nfrom langflow.utils.constants import (\n MESSAGE_SENDER_AI,\n MESSAGE_SENDER_NAME_AI,\n MESSAGE_SENDER_USER,\n)\n\n\nclass ChatOutput(ChatComponent):\n display_name = \"Chat Output\"\n description = \"Display a chat message in the Playground.\"\n documentation: str = \"https://docs.langflow.org/components-io#chat-output\"\n icon = \"MessagesSquare\"\n name = \"ChatOutput\"\n minimized = True\n\n inputs = [\n HandleInput(\n name=\"input_value\",\n display_name=\"Inputs\",\n info=\"Message to be passed as output.\",\n input_types=[\"Data\", \"DataFrame\", \"Message\"],\n required=True,\n ),\n BoolInput(\n name=\"should_store_message\",\n display_name=\"Store Messages\",\n info=\"Store the message in the history.\",\n value=True,\n advanced=True,\n ),\n DropdownInput(\n name=\"sender\",\n display_name=\"Sender Type\",\n options=[MESSAGE_SENDER_AI, MESSAGE_SENDER_USER],\n value=MESSAGE_SENDER_AI,\n advanced=True,\n info=\"Type of sender.\",\n ),\n MessageTextInput(\n name=\"sender_name\",\n display_name=\"Sender Name\",\n info=\"Name of the sender.\",\n value=MESSAGE_SENDER_NAME_AI,\n advanced=True,\n ),\n MessageTextInput(\n name=\"session_id\",\n display_name=\"Session ID\",\n info=\"The session ID of the chat. If empty, the current session ID parameter will be used.\",\n advanced=True,\n ),\n MessageTextInput(\n name=\"data_template\",\n display_name=\"Data Template\",\n value=\"{text}\",\n advanced=True,\n info=\"Template to convert Data to Text. If left empty, it will be dynamically set to the Data's text key.\",\n ),\n ]\n outputs = [\n Output(\n display_name=\"Output Message\",\n name=\"message\",\n method=\"message_response\",\n ),\n ]\n\n def _build_source(self, id_: str | None, display_name: str | None, source: str | None) -> Source:\n source_dict = {}\n if id_:\n source_dict[\"id\"] = id_\n if display_name:\n source_dict[\"display_name\"] = display_name\n if source:\n # Handle case where source is a ChatOpenAI object\n if hasattr(source, \"model_name\"):\n source_dict[\"source\"] = source.model_name\n elif hasattr(source, \"model\"):\n source_dict[\"source\"] = str(source.model)\n else:\n source_dict[\"source\"] = str(source)\n return Source(**source_dict)\n\n async def message_response(self) -> Message:\n # First convert the input to string if needed\n text = self.convert_to_string()\n\n # Get source properties\n source, icon, display_name, source_id = self.get_properties_from_source_component()\n\n # Create or use existing Message object\n if isinstance(self.input_value, Message):\n message = self.input_value\n # Update message properties\n message.text = text\n else:\n message = Message(text=text)\n\n # Set message properties\n message.sender = self.sender\n message.sender_name = self.sender_name\n message.session_id = self.session_id\n message.flow_id = self.graph.flow_id if hasattr(self, \"graph\") else None\n message.properties.source = self._build_source(source_id, display_name, source)\n\n # Store message if needed\n if self.session_id and self.should_store_message:\n stored_message = await self.send_message(message)\n self.message.value = stored_message\n message = stored_message\n\n self.status = message\n return message\n\n def _serialize_data(self, data: Data) -> str:\n \"\"\"Serialize Data object to JSON string.\"\"\"\n # Convert data.data to JSON-serializable format\n serializable_data = jsonable_encoder(data.data)\n # Serialize with orjson, enabling pretty printing with indentation\n json_bytes = orjson.dumps(serializable_data, option=orjson.OPT_INDENT_2)\n # Convert bytes to string and wrap in Markdown code blocks\n return \"```json\\n\" + json_bytes.decode(\"utf-8\") + \"\\n```\"\n\n def _validate_input(self) -> None:\n \"\"\"Validate the input data and raise ValueError if invalid.\"\"\"\n if self.input_value is None:\n msg = \"Input data cannot be None\"\n raise ValueError(msg)\n if isinstance(self.input_value, list) and not all(\n isinstance(item, Message | Data | DataFrame | str) for item in self.input_value\n ):\n invalid_types = [\n type(item).__name__\n for item in self.input_value\n if not isinstance(item, Message | Data | DataFrame | str)\n ]\n msg = f\"Expected Data or DataFrame or Message or str, got {invalid_types}\"\n raise TypeError(msg)\n if not isinstance(\n self.input_value,\n Message | Data | DataFrame | str | list | Generator | type(None),\n ):\n type_name = type(self.input_value).__name__\n msg = f\"Expected Data or DataFrame or Message or str, Generator or None, got {type_name}\"\n raise TypeError(msg)\n\n def convert_to_string(self) -> str | Generator[Any, None, None]:\n \"\"\"Convert input data to string with proper error handling.\"\"\"\n self._validate_input()\n if isinstance(self.input_value, list):\n clean_data: bool = getattr(self, \"clean_data\", False)\n return \"\\n\".join([safe_convert(item, clean_data=clean_data) for item in self.input_value])\n if isinstance(self.input_value, Generator):\n return self.input_value\n return safe_convert(self.input_value)\n" }, "data_template": { "_input_type": "MessageTextInput", "advanced": true, "display_name": "Data Template", "dynamic": false, "info": "Template to convert Data to Text. If left empty, it will be dynamically set to the Data's text key.", "input_types": [ "Message" ], "list": false, "list_add_label": "Add More", "load_from_db": false, "name": "data_template", "placeholder": "", "required": false, "show": true, "title_case": false, "tool_mode": false, "trace_as_input": true, "trace_as_metadata": true, "type": "str", "value": "{text}" }, "input_value": { "_input_type": "HandleInput", "advanced": false, "display_name": "Inputs", "dynamic": false, "info": "Message to be passed as output.", "input_types": [ "Data", "DataFrame", "Message" ], "list": false, "list_add_label": "Add More", "name": "input_value", "placeholder": "", "required": true, "show": true, "title_case": false, "trace_as_metadata": true, "type": "other", "value": "" }, "sender": { "_input_type": "DropdownInput", "advanced": true, "combobox": false, "dialog_inputs": {}, "display_name": "Sender Type", "dynamic": false, "info": "Type of sender.", "name": "sender", "options": [ "Machine", "User" ], "options_metadata": [], "placeholder": "", "required": false, "show": true, "title_case": false, "toggle": false, "tool_mode": false, "trace_as_metadata": true, "type": "str", "value": "Machine" }, "sender_name": { "_input_type": "MessageTextInput", "advanced": true, "display_name": "Sender Name", "dynamic": false, "info": "Name of the sender.", "input_types": [ "Message" ], "list": false, "list_add_label": "Add More", "load_from_db": false, "name": "sender_name", "placeholder": "", "required": false, "show": true, "title_case": false, "tool_mode": false, "trace_as_input": true, "trace_as_metadata": true, "type": "str", "value": "AI" }, "session_id": { "_input_type": "MessageTextInput", "advanced": true, "display_name": "Session ID", "dynamic": false, "info": "The session ID of the chat. If empty, the current session ID parameter will be used.", "input_types": [ "Message" ], "list": false, "list_add_label": "Add More", "load_from_db": false, "name": "session_id", "placeholder": "", "required": false, "show": true, "title_case": false, "tool_mode": false, "trace_as_input": true, "trace_as_metadata": true, "type": "str", "value": "" }, "should_store_message": { "_input_type": "BoolInput", "advanced": true, "display_name": "Store Messages", "dynamic": false, "info": "Store the message in the history.", "list": false, "list_add_label": "Add More", "name": "should_store_message", "placeholder": "", "required": false, "show": true, "title_case": false, "tool_mode": false, "trace_as_metadata": true, "type": "bool", "value": true } }, "tool_mode": false }, "showNode": false, "type": "ChatOutput" }, "dragging": false, "id": "ChatOutput-hmMTq", "measured": { "height": 48, "width": 192 }, "position": { "x": 1214.3761564586034, "y": 511.8564949852382 }, "selected": false, "type": "genericNode" }, { "data": { "id": "ChatInput-8bLHN", "node": { "base_classes": [ "Message" ], "beta": false, "conditional_paths": [], "custom_fields": {}, "description": "Get chat inputs from the Playground.", "display_name": "Chat Input", "documentation": "", "edited": false, "field_order": [ "input_value", "should_store_message", "sender", "sender_name", "session_id", "files", "background_color", "chat_icon", "text_color" ], "frozen": false, "icon": "MessagesSquare", "legacy": false, "lf_version": "1.4.3", "metadata": {}, "minimized": true, "output_types": [], "outputs": [ { "allows_loop": false, "cache": true, "display_name": "Chat Message", "group_outputs": false, "method": "message_response", "name": "message", "selected": "Message", "tool_mode": true, "types": [ "Message" ], "value": "__UNDEFINED__" } ], "pinned": false, "template": { "_type": "Component", "code": { "advanced": true, "dynamic": true, "fileTypes": [], "file_path": "", "info": "", "list": false, "load_from_db": false, "multiline": true, "name": "code", "password": false, "placeholder": "", "required": true, "show": true, "title_case": false, "type": "code", "value": "from langflow.base.data.utils import IMG_FILE_TYPES, TEXT_FILE_TYPES\nfrom langflow.base.io.chat import ChatComponent\nfrom langflow.inputs.inputs import BoolInput\nfrom langflow.io import (\n DropdownInput,\n FileInput,\n MessageTextInput,\n MultilineInput,\n Output,\n)\nfrom langflow.schema.message import Message\nfrom langflow.utils.constants import (\n MESSAGE_SENDER_AI,\n MESSAGE_SENDER_NAME_USER,\n MESSAGE_SENDER_USER,\n)\n\n\nclass ChatInput(ChatComponent):\n display_name = \"Chat Input\"\n description = \"Get chat inputs from the Playground.\"\n documentation: str = \"https://docs.langflow.org/components-io#chat-input\"\n icon = \"MessagesSquare\"\n name = \"ChatInput\"\n minimized = True\n\n inputs = [\n MultilineInput(\n name=\"input_value\",\n display_name=\"Input Text\",\n value=\"\",\n info=\"Message to be passed as input.\",\n input_types=[],\n ),\n BoolInput(\n name=\"should_store_message\",\n display_name=\"Store Messages\",\n info=\"Store the message in the history.\",\n value=True,\n advanced=True,\n ),\n DropdownInput(\n name=\"sender\",\n display_name=\"Sender Type\",\n options=[MESSAGE_SENDER_AI, MESSAGE_SENDER_USER],\n value=MESSAGE_SENDER_USER,\n info=\"Type of sender.\",\n advanced=True,\n ),\n MessageTextInput(\n name=\"sender_name\",\n display_name=\"Sender Name\",\n info=\"Name of the sender.\",\n value=MESSAGE_SENDER_NAME_USER,\n advanced=True,\n ),\n MessageTextInput(\n name=\"session_id\",\n display_name=\"Session ID\",\n info=\"The session ID of the chat. If empty, the current session ID parameter will be used.\",\n advanced=True,\n ),\n FileInput(\n name=\"files\",\n display_name=\"Files\",\n file_types=TEXT_FILE_TYPES + IMG_FILE_TYPES,\n info=\"Files to be sent with the message.\",\n advanced=True,\n is_list=True,\n temp_file=True,\n ),\n ]\n outputs = [\n Output(display_name=\"Chat Message\", name=\"message\", method=\"message_response\"),\n ]\n\n async def message_response(self) -> Message:\n # Ensure files is a list and filter out empty/None values\n files = self.files if self.files else []\n if files and not isinstance(files, list):\n files = [files]\n files = [f for f in files if f is not None and f != \"\"]\n\n message = await Message.create(\n text=self.input_value,\n sender=self.sender,\n sender_name=self.sender_name,\n session_id=self.session_id,\n files=files,\n )\n if self.session_id and isinstance(message, Message) and self.should_store_message:\n stored_message = await self.send_message(\n message,\n )\n self.message.value = stored_message\n message = stored_message\n\n self.status = message\n return message\n" }, "files": { "_input_type": "FileInput", "advanced": true, "display_name": "Files", "dynamic": false, "fileTypes": [ "csv", "json", "pdf", "txt", "md", "mdx", "yaml", "yml", "xml", "html", "htm", "docx", "py", "sh", "sql", "js", "ts", "tsx", "jpg", "jpeg", "png", "bmp", "image" ], "file_path": "", "info": "Files to be sent with the message.", "list": true, "list_add_label": "Add More", "name": "files", "placeholder": "", "required": false, "show": true, "temp_file": true, "title_case": false, "trace_as_metadata": true, "type": "file", "value": "" }, "input_value": { "_input_type": "MultilineInput", "advanced": false, "copy_field": false, "display_name": "Input Text", "dynamic": false, "info": "Message to be passed as input.", "input_types": [], "list": false, "list_add_label": "Add More", "load_from_db": false, "multiline": true, "name": "input_value", "placeholder": "", "required": false, "show": true, "title_case": false, "tool_mode": false, "trace_as_input": true, "trace_as_metadata": true, "type": "str", "value": "ai" }, "sender": { "_input_type": "DropdownInput", "advanced": true, "combobox": false, "dialog_inputs": {}, "display_name": "Sender Type", "dynamic": false, "info": "Type of sender.", "name": "sender", "options": [ "Machine", "User" ], "options_metadata": [], "placeholder": "", "required": false, "show": true, "title_case": false, "toggle": false, "tool_mode": false, "trace_as_metadata": true, "type": "str", "value": "User" }, "sender_name": { "_input_type": "MessageTextInput", "advanced": true, "display_name": "Sender Name", "dynamic": false, "info": "Name of the sender.", "input_types": [ "Message" ], "list": false, "list_add_label": "Add More", "load_from_db": false, "name": "sender_name", "placeholder": "", "required": false, "show": true, "title_case": false, "tool_mode": false, "trace_as_input": true, "trace_as_metadata": true, "type": "str", "value": "User" }, "session_id": { "_input_type": "MessageTextInput", "advanced": true, "display_name": "Session ID", "dynamic": false, "info": "The session ID of the chat. If empty, the current session ID parameter will be used.", "input_types": [ "Message" ], "list": false, "list_add_label": "Add More", "load_from_db": false, "name": "session_id", "placeholder": "", "required": false, "show": true, "title_case": false, "tool_mode": false, "trace_as_input": true, "trace_as_metadata": true, "type": "str", "value": "" }, "should_store_message": { "_input_type": "BoolInput", "advanced": true, "display_name": "Store Messages", "dynamic": false, "info": "Store the message in the history.", "list": false, "list_add_label": "Add More", "name": "should_store_message", "placeholder": "", "required": false, "show": true, "title_case": false, "tool_mode": false, "trace_as_metadata": true, "type": "bool", "value": true } }, "tool_mode": false }, "showNode": true, "type": "ChatInput" }, "dragging": false, "id": "ChatInput-8bLHN", "measured": { "height": 204, "width": 320 }, "position": { "x": -333.65585758816223, "y": 107.75353484470551 }, "selected": false, "type": "genericNode" }, { "data": { "id": "note-1UowE", "node": { "description": "# **Langflow Loop Component Template - ArXiv search result Translator** \nThis template translates research paper summaries on ArXiv into Portuguese and summarizes them. \n Using **Langflow’s looping mechanism**, the template iterates through multiple research papers, translates them with the **OpenAI** model component, and outputs an aggregated version of all translated papers. \n\n## Quickstart \n 1. Add your OpenAI API key to the **Language Model** component. \n2. In the **Playground**, enter a query related to a research topic (for example, “Quantum Computing Advancements”). \n\n The flow fetches a list of research papers from ArXiv matching the query. Each paper in the retrieved list is processed one-by-one using the Langflow **Loop component**. \n\n The abstract of each paper is translated into Portuguese by the **OpenAI** model component. \n\n Once all papers are translated, the system aggregates them into a **single structured output**.", "display_name": "", "documentation": "", "template": {} }, "type": "note" }, "dragging": false, "height": 647, "id": "note-1UowE", "measured": { "height": 647, "width": 576 }, "position": { "x": -890.9006297459302, "y": -233.44894493951168 }, "resizing": false, "selected": false, "type": "noteNode", "width": 576 }, { "data": { "id": "ParserComponent-aKcLF", "node": { "base_classes": [ "Message" ], "beta": false, "conditional_paths": [], "custom_fields": {}, "description": "Extracts text using a template.", "display_name": "Parser", "documentation": "", "edited": false, "field_order": [ "input_data", "mode", "pattern", "sep" ], "frozen": false, "icon": "braces", "legacy": false, "lf_version": "1.4.3", "metadata": {}, "minimized": false, "output_types": [], "outputs": [ { "allows_loop": false, "cache": true, "display_name": "Parsed Text", "group_outputs": false, "method": "parse_combined_text", "name": "parsed_text", "selected": "Message", "tool_mode": true, "types": [ "Message" ], "value": "__UNDEFINED__" } ], "pinned": false, "template": { "_type": "Component", "code": { "advanced": true, "dynamic": true, "fileTypes": [], "file_path": "", "info": "", "list": false, "load_from_db": false, "multiline": true, "name": "code", "password": false, "placeholder": "", "required": true, "show": true, "title_case": false, "type": "code", "value": "from langflow.custom.custom_component.component import Component\nfrom langflow.helpers.data import safe_convert\nfrom langflow.inputs.inputs import BoolInput, HandleInput, MessageTextInput, MultilineInput, TabInput\nfrom langflow.schema.data import Data\nfrom langflow.schema.dataframe import DataFrame\nfrom langflow.schema.message import Message\nfrom langflow.template.field.base import Output\n\n\nclass ParserComponent(Component):\n display_name = \"Parser\"\n description = \"Extracts text using a template.\"\n documentation: str = \"https://docs.langflow.org/components-processing#parser\"\n icon = \"braces\"\n\n inputs = [\n HandleInput(\n name=\"input_data\",\n display_name=\"Data or DataFrame\",\n input_types=[\"DataFrame\", \"Data\"],\n info=\"Accepts either a DataFrame or a Data object.\",\n required=True,\n ),\n TabInput(\n name=\"mode\",\n display_name=\"Mode\",\n options=[\"Parser\", \"Stringify\"],\n value=\"Parser\",\n info=\"Convert into raw string instead of using a template.\",\n real_time_refresh=True,\n ),\n MultilineInput(\n name=\"pattern\",\n display_name=\"Template\",\n info=(\n \"Use variables within curly brackets to extract column values for DataFrames \"\n \"or key values for Data.\"\n \"For example: `Name: {Name}, Age: {Age}, Country: {Country}`\"\n ),\n value=\"Text: {text}\", # Example default\n dynamic=True,\n show=True,\n required=True,\n ),\n MessageTextInput(\n name=\"sep\",\n display_name=\"Separator\",\n advanced=True,\n value=\"\\n\",\n info=\"String used to separate rows/items.\",\n ),\n ]\n\n outputs = [\n Output(\n display_name=\"Parsed Text\",\n name=\"parsed_text\",\n info=\"Formatted text output.\",\n method=\"parse_combined_text\",\n ),\n ]\n\n def update_build_config(self, build_config, field_value, field_name=None):\n \"\"\"Dynamically hide/show `template` and enforce requirement based on `stringify`.\"\"\"\n if field_name == \"mode\":\n build_config[\"pattern\"][\"show\"] = self.mode == \"Parser\"\n build_config[\"pattern\"][\"required\"] = self.mode == \"Parser\"\n if field_value:\n clean_data = BoolInput(\n name=\"clean_data\",\n display_name=\"Clean Data\",\n info=(\n \"Enable to clean the data by removing empty rows and lines \"\n \"in each cell of the DataFrame/ Data object.\"\n ),\n value=True,\n advanced=True,\n required=False,\n )\n build_config[\"clean_data\"] = clean_data.to_dict()\n else:\n build_config.pop(\"clean_data\", None)\n\n return build_config\n\n def _clean_args(self):\n \"\"\"Prepare arguments based on input type.\"\"\"\n input_data = self.input_data\n\n match input_data:\n case list() if all(isinstance(item, Data) for item in input_data):\n msg = \"List of Data objects is not supported.\"\n raise ValueError(msg)\n case DataFrame():\n return input_data, None\n case Data():\n return None, input_data\n case dict() if \"data\" in input_data:\n try:\n if \"columns\" in input_data: # Likely a DataFrame\n return DataFrame.from_dict(input_data), None\n # Likely a Data object\n return None, Data(**input_data)\n except (TypeError, ValueError, KeyError) as e:\n msg = f\"Invalid structured input provided: {e!s}\"\n raise ValueError(msg) from e\n case _:\n msg = f\"Unsupported input type: {type(input_data)}. Expected DataFrame or Data.\"\n raise ValueError(msg)\n\n def parse_combined_text(self) -> Message:\n \"\"\"Parse all rows/items into a single text or convert input to string if `stringify` is enabled.\"\"\"\n # Early return for stringify option\n if self.mode == \"Stringify\":\n return self.convert_to_string()\n\n df, data = self._clean_args()\n\n lines = []\n if df is not None:\n for _, row in df.iterrows():\n formatted_text = self.pattern.format(**row.to_dict())\n lines.append(formatted_text)\n elif data is not None:\n formatted_text = self.pattern.format(**data.data)\n lines.append(formatted_text)\n\n combined_text = self.sep.join(lines)\n self.status = combined_text\n return Message(text=combined_text)\n\n def convert_to_string(self) -> Message:\n \"\"\"Convert input data to string with proper error handling.\"\"\"\n result = \"\"\n if isinstance(self.input_data, list):\n result = \"\\n\".join([safe_convert(item, clean_data=self.clean_data or False) for item in self.input_data])\n else:\n result = safe_convert(self.input_data or False)\n self.log(f\"Converted to string with length: {len(result)}\")\n\n message = Message(text=result)\n self.status = message\n return message\n" }, "input_data": { "_input_type": "HandleInput", "advanced": false, "display_name": "Data or DataFrame", "dynamic": false, "info": "Accepts either a DataFrame or a Data object.", "input_types": [ "DataFrame", "Data" ], "list": false, "list_add_label": "Add More", "name": "input_data", "placeholder": "", "required": true, "show": true, "title_case": false, "trace_as_metadata": true, "type": "other", "value": "" }, "mode": { "_input_type": "TabInput", "advanced": false, "display_name": "Mode", "dynamic": false, "info": "Convert into raw string instead of using a template.", "load_from_db": false, "name": "mode", "options": [ "Parser", "Stringify" ], "placeholder": "", "real_time_refresh": true, "required": false, "show": true, "title_case": false, "tool_mode": false, "trace_as_metadata": true, "type": "tab", "value": "Stringify" }, "pattern": { "_input_type": "MultilineInput", "advanced": false, "copy_field": false, "display_name": "Template", "dynamic": true, "info": "Use variables within curly brackets to extract column values for DataFrames or key values for Data.For example: `Name: {Name}, Age: {Age}, Country: {Country}`", "input_types": [ "Message" ], "list": false, "list_add_label": "Add More", "load_from_db": false, "multiline": true, "name": "pattern", "placeholder": "", "required": true, "show": true, "title_case": false, "tool_mode": false, "trace_as_input": true, "trace_as_metadata": true, "type": "str", "value": "Text: {dt}" }, "sep": { "_input_type": "MessageTextInput", "advanced": true, "display_name": "Separator", "dynamic": false, "info": "String used to separate rows/items.", "input_types": [ "Message" ], "list": false, "list_add_label": "Add More", "load_from_db": false, "name": "sep", "placeholder": "", "required": false, "show": true, "title_case": false, "tool_mode": false, "trace_as_input": true, "trace_as_metadata": true, "type": "str", "value": "\n" } }, "tool_mode": false }, "showNode": true, "type": "ParserComponent" }, "dragging": false, "id": "ParserComponent-aKcLF", "measured": { "height": 329, "width": 320 }, "position": { "x": 971.3987248215344, "y": -186.6658506576822 }, "selected": false, "type": "genericNode" }, { "data": { "id": "LoopComponent-GV15E", "node": { "base_classes": [ "Data", "DataFrame" ], "beta": false, "conditional_paths": [], "custom_fields": {}, "description": "Iterates over a list of Data objects, outputting one item at a time and aggregating results from loop inputs.", "display_name": "Loop", "documentation": "", "edited": false, "field_order": [ "data" ], "frozen": false, "icon": "infinity", "legacy": false, "lf_version": "1.4.3", "metadata": {}, "minimized": false, "output_types": [], "outputs": [ { "allows_loop": true, "cache": true, "display_name": "Item", "group_outputs": true, "method": "item_output", "name": "item", "selected": "Data", "tool_mode": true, "types": [ "Data" ], "value": "__UNDEFINED__" }, { "allows_loop": false, "cache": true, "display_name": "Done", "group_outputs": true, "method": "done_output", "name": "done", "selected": "DataFrame", "tool_mode": true, "types": [ "DataFrame" ], "value": "__UNDEFINED__" } ], "pinned": false, "template": { "_type": "Component", "code": { "advanced": true, "dynamic": true, "fileTypes": [], "file_path": "", "info": "", "list": false, "load_from_db": false, "multiline": true, "name": "code", "password": false, "placeholder": "", "required": true, "show": true, "title_case": false, "type": "code", "value": "from langflow.custom.custom_component.component import Component\nfrom langflow.inputs.inputs import HandleInput\nfrom langflow.schema.data import Data\nfrom langflow.schema.dataframe import DataFrame\nfrom langflow.template.field.base import Output\n\n\nclass LoopComponent(Component):\n display_name = \"Loop\"\n description = (\n \"Iterates over a list of Data objects, outputting one item at a time and aggregating results from loop inputs.\"\n )\n documentation: str = \"https://docs.langflow.org/components-logic#loop\"\n icon = \"infinity\"\n\n inputs = [\n HandleInput(\n name=\"data\",\n display_name=\"Inputs\",\n info=\"The initial list of Data objects or DataFrame to iterate over.\",\n input_types=[\"DataFrame\"],\n ),\n ]\n\n outputs = [\n Output(display_name=\"Item\", name=\"item\", method=\"item_output\", allows_loop=True, group_outputs=True),\n Output(display_name=\"Done\", name=\"done\", method=\"done_output\", group_outputs=True),\n ]\n\n def initialize_data(self) -> None:\n \"\"\"Initialize the data list, context index, and aggregated list.\"\"\"\n if self.ctx.get(f\"{self._id}_initialized\", False):\n return\n\n # Ensure data is a list of Data objects\n data_list = self._validate_data(self.data)\n\n # Store the initial data and context variables\n self.update_ctx(\n {\n f\"{self._id}_data\": data_list,\n f\"{self._id}_index\": 0,\n f\"{self._id}_aggregated\": [],\n f\"{self._id}_initialized\": True,\n }\n )\n\n def _validate_data(self, data):\n \"\"\"Validate and return a list of Data objects.\"\"\"\n if isinstance(data, DataFrame):\n return data.to_data_list()\n if isinstance(data, Data):\n return [data]\n if isinstance(data, list) and all(isinstance(item, Data) for item in data):\n return data\n msg = \"The 'data' input must be a DataFrame, a list of Data objects, or a single Data object.\"\n raise TypeError(msg)\n\n def evaluate_stop_loop(self) -> bool:\n \"\"\"Evaluate whether to stop item or done output.\"\"\"\n current_index = self.ctx.get(f\"{self._id}_index\", 0)\n data_length = len(self.ctx.get(f\"{self._id}_data\", []))\n return current_index > data_length\n\n def item_output(self) -> Data:\n \"\"\"Output the next item in the list or stop if done.\"\"\"\n self.initialize_data()\n current_item = Data(text=\"\")\n\n if self.evaluate_stop_loop():\n self.stop(\"item\")\n else:\n # Get data list and current index\n data_list, current_index = self.loop_variables()\n if current_index < len(data_list):\n # Output current item and increment index\n try:\n current_item = data_list[current_index]\n except IndexError:\n current_item = Data(text=\"\")\n self.aggregated_output()\n self.update_ctx({f\"{self._id}_index\": current_index + 1})\n\n # Now we need to update the dependencies for the next run\n self.update_dependency()\n return current_item\n\n def update_dependency(self):\n item_dependency_id = self.get_incoming_edge_by_target_param(\"item\")\n if item_dependency_id not in self.graph.run_manager.run_predecessors[self._id]:\n self.graph.run_manager.run_predecessors[self._id].append(item_dependency_id)\n\n def done_output(self) -> DataFrame:\n \"\"\"Trigger the done output when iteration is complete.\"\"\"\n self.initialize_data()\n\n if self.evaluate_stop_loop():\n self.stop(\"item\")\n self.start(\"done\")\n\n aggregated = self.ctx.get(f\"{self._id}_aggregated\", [])\n\n return DataFrame(aggregated)\n self.stop(\"done\")\n return DataFrame([])\n\n def loop_variables(self):\n \"\"\"Retrieve loop variables from context.\"\"\"\n return (\n self.ctx.get(f\"{self._id}_data\", []),\n self.ctx.get(f\"{self._id}_index\", 0),\n )\n\n def aggregated_output(self) -> list[Data]:\n \"\"\"Return the aggregated list once all items are processed.\"\"\"\n self.initialize_data()\n\n # Get data list and aggregated list\n data_list = self.ctx.get(f\"{self._id}_data\", [])\n aggregated = self.ctx.get(f\"{self._id}_aggregated\", [])\n loop_input = self.item\n if loop_input is not None and not isinstance(loop_input, str) and len(aggregated) <= len(data_list):\n aggregated.append(loop_input)\n self.update_ctx({f\"{self._id}_aggregated\": aggregated})\n return aggregated\n" }, "data": { "_input_type": "HandleInput", "advanced": false, "display_name": "Inputs", "dynamic": false, "info": "The initial list of Data objects or DataFrame to iterate over.", "input_types": [ "DataFrame" ], "list": false, "list_add_label": "Add More", "name": "data", "placeholder": "", "required": false, "show": true, "title_case": false, "trace_as_metadata": true, "type": "other", "value": "" } }, "tool_mode": false }, "showNode": true, "type": "LoopComponent" }, "dragging": false, "id": "LoopComponent-GV15E", "measured": { "height": 242, "width": 320 }, "position": { "x": 541.1188345961908, "y": 181.38181401206583 }, "selected": false, "type": "genericNode" }, { "data": { "id": "LanguageModelComponent-ze4nq", "node": { "base_classes": [ "LanguageModel", "Message" ], "beta": false, "conditional_paths": [], "custom_fields": {}, "description": "Runs a language model given a specified provider. ", "display_name": "Language Model", "documentation": "", "edited": false, "field_order": [ "provider", "model_name", "api_key", "input_value", "system_message", "stream", "temperature" ], "frozen": false, "icon": "brain-circuit", "legacy": false, "lf_version": "1.4.3", "metadata": { "keywords": [ "model", "llm", "language model", "large language model" ] }, "minimized": false, "output_types": [], "outputs": [ { "allows_loop": false, "cache": true, "display_name": "Model Response", "group_outputs": false, "method": "text_response", "name": "text_output", "options": null, "required_inputs": null, "selected": "Message", "tool_mode": true, "types": [ "Message" ], "value": "__UNDEFINED__" }, { "allows_loop": false, "cache": true, "display_name": "Language Model", "group_outputs": false, "method": "build_model", "name": "model_output", "options": null, "required_inputs": null, "selected": "LanguageModel", "tool_mode": true, "types": [ "LanguageModel" ], "value": "__UNDEFINED__" } ], "pinned": false, "priority": 0, "template": { "_type": "Component", "api_key": { "_input_type": "SecretStrInput", "advanced": false, "display_name": "OpenAI API Key", "dynamic": false, "info": "Model Provider API key", "input_types": [], "load_from_db": true, "name": "api_key", "password": true, "placeholder": "", "real_time_refresh": true, "required": false, "show": true, "title_case": false, "type": "str", "value": "OPENAI_API_KEY" }, "code": { "advanced": true, "dynamic": true, "fileTypes": [], "file_path": "", "info": "", "list": false, "load_from_db": false, "multiline": true, "name": "code", "password": false, "placeholder": "", "required": true, "show": true, "title_case": false, "type": "code", "value": "from typing import Any\n\nfrom langchain_anthropic import ChatAnthropic\nfrom langchain_google_genai import ChatGoogleGenerativeAI\nfrom langchain_openai import ChatOpenAI\n\nfrom langflow.base.models.anthropic_constants import ANTHROPIC_MODELS\nfrom langflow.base.models.google_generative_ai_constants import GOOGLE_GENERATIVE_AI_MODELS\nfrom langflow.base.models.model import LCModelComponent\nfrom langflow.base.models.openai_constants import OPENAI_CHAT_MODEL_NAMES, OPENAI_REASONING_MODEL_NAMES\nfrom langflow.field_typing import LanguageModel\nfrom langflow.field_typing.range_spec import RangeSpec\nfrom langflow.inputs.inputs import BoolInput\nfrom langflow.io import DropdownInput, MessageInput, MultilineInput, SecretStrInput, SliderInput\nfrom langflow.schema.dotdict import dotdict\n\n\nclass LanguageModelComponent(LCModelComponent):\n display_name = \"Language Model\"\n description = \"Runs a language model given a specified provider.\"\n documentation: str = \"https://docs.langflow.org/components-models\"\n icon = \"brain-circuit\"\n category = \"models\"\n priority = 0 # Set priority to 0 to make it appear first\n\n inputs = [\n DropdownInput(\n name=\"provider\",\n display_name=\"Model Provider\",\n options=[\"OpenAI\", \"Anthropic\", \"Google\"],\n value=\"OpenAI\",\n info=\"Select the model provider\",\n real_time_refresh=True,\n options_metadata=[{\"icon\": \"OpenAI\"}, {\"icon\": \"Anthropic\"}, {\"icon\": \"GoogleGenerativeAI\"}],\n ),\n DropdownInput(\n name=\"model_name\",\n display_name=\"Model Name\",\n options=OPENAI_CHAT_MODEL_NAMES + OPENAI_REASONING_MODEL_NAMES,\n value=OPENAI_CHAT_MODEL_NAMES[0],\n info=\"Select the model to use\",\n real_time_refresh=True,\n ),\n SecretStrInput(\n name=\"api_key\",\n display_name=\"OpenAI API Key\",\n info=\"Model Provider API key\",\n required=False,\n show=True,\n real_time_refresh=True,\n ),\n MessageInput(\n name=\"input_value\",\n display_name=\"Input\",\n info=\"The input text to send to the model\",\n ),\n MultilineInput(\n name=\"system_message\",\n display_name=\"System Message\",\n info=\"A system message that helps set the behavior of the assistant\",\n advanced=False,\n ),\n BoolInput(\n name=\"stream\",\n display_name=\"Stream\",\n info=\"Whether to stream the response\",\n value=False,\n advanced=True,\n ),\n SliderInput(\n name=\"temperature\",\n display_name=\"Temperature\",\n value=0.1,\n info=\"Controls randomness in responses\",\n range_spec=RangeSpec(min=0, max=1, step=0.01),\n advanced=True,\n ),\n ]\n\n def build_model(self) -> LanguageModel:\n provider = self.provider\n model_name = self.model_name\n temperature = self.temperature\n stream = self.stream\n\n if provider == \"OpenAI\":\n if not self.api_key:\n msg = \"OpenAI API key is required when using OpenAI provider\"\n raise ValueError(msg)\n\n if model_name in OPENAI_REASONING_MODEL_NAMES:\n # reasoning models do not support temperature (yet)\n temperature = None\n\n return ChatOpenAI(\n model_name=model_name,\n temperature=temperature,\n streaming=stream,\n openai_api_key=self.api_key,\n )\n if provider == \"Anthropic\":\n if not self.api_key:\n msg = \"Anthropic API key is required when using Anthropic provider\"\n raise ValueError(msg)\n return ChatAnthropic(\n model=model_name,\n temperature=temperature,\n streaming=stream,\n anthropic_api_key=self.api_key,\n )\n if provider == \"Google\":\n if not self.api_key:\n msg = \"Google API key is required when using Google provider\"\n raise ValueError(msg)\n return ChatGoogleGenerativeAI(\n model=model_name,\n temperature=temperature,\n streaming=stream,\n google_api_key=self.api_key,\n )\n msg = f\"Unknown provider: {provider}\"\n raise ValueError(msg)\n\n def update_build_config(self, build_config: dotdict, field_value: Any, field_name: str | None = None) -> dotdict:\n if field_name == \"provider\":\n if field_value == \"OpenAI\":\n build_config[\"model_name\"][\"options\"] = OPENAI_CHAT_MODEL_NAMES + OPENAI_REASONING_MODEL_NAMES\n build_config[\"model_name\"][\"value\"] = OPENAI_CHAT_MODEL_NAMES[0]\n build_config[\"api_key\"][\"display_name\"] = \"OpenAI API Key\"\n elif field_value == \"Anthropic\":\n build_config[\"model_name\"][\"options\"] = ANTHROPIC_MODELS\n build_config[\"model_name\"][\"value\"] = ANTHROPIC_MODELS[0]\n build_config[\"api_key\"][\"display_name\"] = \"Anthropic API Key\"\n elif field_value == \"Google\":\n build_config[\"model_name\"][\"options\"] = GOOGLE_GENERATIVE_AI_MODELS\n build_config[\"model_name\"][\"value\"] = GOOGLE_GENERATIVE_AI_MODELS[0]\n build_config[\"api_key\"][\"display_name\"] = \"Google API Key\"\n elif field_name == \"model_name\" and field_value.startswith(\"o1\") and self.provider == \"OpenAI\":\n # Hide system_message for o1 models - currently unsupported\n if \"system_message\" in build_config:\n build_config[\"system_message\"][\"show\"] = False\n elif field_name == \"model_name\" and not field_value.startswith(\"o1\") and \"system_message\" in build_config:\n build_config[\"system_message\"][\"show\"] = True\n return build_config\n" }, "input_value": { "_input_type": "MessageInput", "advanced": false, "display_name": "Input", "dynamic": false, "info": "The input text to send to the model", "input_types": [ "Message" ], "list": false, "list_add_label": "Add More", "load_from_db": false, "name": "input_value", "placeholder": "", "required": false, "show": true, "title_case": false, "tool_mode": false, "trace_as_input": true, "trace_as_metadata": true, "type": "str", "value": "" }, "model_name": { "_input_type": "DropdownInput", "advanced": false, "combobox": false, "dialog_inputs": {}, "display_name": "Model Name", "dynamic": false, "info": "Select the model to use", "name": "model_name", "options": [ "gpt-4o-mini", "gpt-4o", "gpt-4.1", "gpt-4.1-mini", "gpt-4.1-nano", "gpt-4.5-preview", "gpt-4-turbo", "gpt-4-turbo-preview", "gpt-4", "gpt-3.5-turbo" ], "options_metadata": [], "placeholder": "", "required": false, "show": true, "title_case": false, "toggle": false, "tool_mode": false, "trace_as_metadata": true, "type": "str", "value": "gpt-4.1" }, "provider": { "_input_type": "DropdownInput", "advanced": false, "combobox": false, "dialog_inputs": {}, "display_name": "Model Provider", "dynamic": false, "info": "Select the model provider", "name": "provider", "options": [ "OpenAI", "Anthropic", "Google" ], "options_metadata": [ { "icon": "OpenAI" }, { "icon": "Anthropic" }, { "icon": "Google" } ], "placeholder": "", "real_time_refresh": true, "required": false, "show": true, "title_case": false, "toggle": false, "tool_mode": false, "trace_as_metadata": true, "type": "str", "value": "OpenAI" }, "stream": { "_input_type": "BoolInput", "advanced": true, "display_name": "Stream", "dynamic": false, "info": "Whether to stream the response", "list": false, "list_add_label": "Add More", "name": "stream", "placeholder": "", "required": false, "show": true, "title_case": false, "tool_mode": false, "trace_as_metadata": true, "type": "bool", "value": false }, "system_message": { "_input_type": "MultilineInput", "advanced": false, "copy_field": false, "display_name": "System Message", "dynamic": false, "info": "A system message that helps set the behavior of the assistant", "input_types": [ "Message" ], "list": false, "list_add_label": "Add More", "load_from_db": false, "multiline": true, "name": "system_message", "placeholder": "", "required": false, "show": true, "title_case": false, "tool_mode": false, "trace_as_input": true, "trace_as_metadata": true, "type": "str", "value": "Translate to Portuguese and output in structured formatReturn only the JSON and no additional text." }, "temperature": { "_input_type": "SliderInput", "advanced": true, "display_name": "Temperature", "dynamic": false, "info": "Controls randomness in responses", "max_label": "", "max_label_icon": "", "min_label": "", "min_label_icon": "", "name": "temperature", "placeholder": "", "range_spec": { "max": 1, "min": 0, "step": 0.01, "step_type": "float" }, "required": false, "show": true, "slider_buttons": false, "slider_buttons_options": [], "slider_input": false, "title_case": false, "tool_mode": false, "type": "slider", "value": 0.1 } }, "tool_mode": false }, "selected_output": "text_output", "showNode": true, "type": "LanguageModelComponent" }, "dragging": false, "id": "LanguageModelComponent-ze4nq", "measured": { "height": 534, "width": 320 }, "position": { "x": 1472.0991866325971, "y": -182.4108205734875 }, "selected": true, "type": "genericNode" }, { "data": { "id": "TypeConverterComponent-NClYY", "node": { "base_classes": [ "Message" ], "beta": false, "category": "processing", "conditional_paths": [], "custom_fields": {}, "description": "Convert between different types (Message, Data, DataFrame)", "display_name": "Type Convert", "documentation": "", "edited": false, "field_order": [ "input_data", "output_type" ], "frozen": false, "icon": "repeat", "key": "TypeConverterComponent", "legacy": false, "metadata": {}, "minimized": false, "output_types": [], "outputs": [ { "allows_loop": false, "cache": true, "display_name": "Data Output", "group_outputs": false, "hidden": null, "method": "convert_to_data", "name": "data_output", "options": null, "required_inputs": null, "selected": "Data", "tool_mode": true, "types": [ "Data" ], "value": "__UNDEFINED__" } ], "pinned": false, "score": 0.007568328950209746, "template": { "_type": "Component", "code": { "advanced": true, "dynamic": true, "fileTypes": [], "file_path": "", "info": "", "list": false, "load_from_db": false, "multiline": true, "name": "code", "password": false, "placeholder": "", "required": true, "show": true, "title_case": false, "type": "code", "value": "from typing import Any\n\nfrom langflow.custom import Component\nfrom langflow.io import HandleInput, Output, TabInput\nfrom langflow.schema import Data, DataFrame, Message\n\n\ndef convert_to_message(v) -> Message:\n \"\"\"Convert input to Message type.\n\n Args:\n v: Input to convert (Message, Data, DataFrame, or dict)\n\n Returns:\n Message: Converted Message object\n \"\"\"\n return v if isinstance(v, Message) else v.to_message()\n\n\ndef convert_to_data(v: DataFrame | Data | Message | dict) -> Data:\n \"\"\"Convert input to Data type.\n\n Args:\n v: Input to convert (Message, Data, DataFrame, or dict)\n\n Returns:\n Data: Converted Data object\n \"\"\"\n if isinstance(v, dict):\n return Data(v)\n if isinstance(v, Message):\n return v.to_data()\n return v if isinstance(v, Data) else v.to_data()\n\n\ndef convert_to_dataframe(v: DataFrame | Data | Message | dict) -> DataFrame:\n \"\"\"Convert input to DataFrame type.\n\n Args:\n v: Input to convert (Message, Data, DataFrame, or dict)\n\n Returns:\n DataFrame: Converted DataFrame object\n \"\"\"\n if isinstance(v, dict):\n return DataFrame([v])\n return v if isinstance(v, DataFrame) else v.to_dataframe()\n\n\nclass TypeConverterComponent(Component):\n display_name = \"Type Convert\"\n description = \"Convert between different types (Message, Data, DataFrame)\"\n documentation: str = \"https://docs.langflow.org/components-processing#type-convert\"\n icon = \"repeat\"\n\n inputs = [\n HandleInput(\n name=\"input_data\",\n display_name=\"Input\",\n input_types=[\"Message\", \"Data\", \"DataFrame\"],\n info=\"Accept Message, Data or DataFrame as input\",\n required=True,\n ),\n TabInput(\n name=\"output_type\",\n display_name=\"Output Type\",\n options=[\"Message\", \"Data\", \"DataFrame\"],\n info=\"Select the desired output data type\",\n real_time_refresh=True,\n value=\"Message\",\n ),\n ]\n\n outputs = [\n Output(\n display_name=\"Message Output\",\n name=\"message_output\",\n method=\"convert_to_message\",\n )\n ]\n\n def update_outputs(self, frontend_node: dict, field_name: str, field_value: Any) -> dict:\n \"\"\"Dynamically show only the relevant output based on the selected output type.\"\"\"\n if field_name == \"output_type\":\n # Start with empty outputs\n frontend_node[\"outputs\"] = []\n\n # Add only the selected output type\n if field_value == \"Message\":\n frontend_node[\"outputs\"].append(\n Output(\n display_name=\"Message Output\",\n name=\"message_output\",\n method=\"convert_to_message\",\n ).to_dict()\n )\n elif field_value == \"Data\":\n frontend_node[\"outputs\"].append(\n Output(\n display_name=\"Data Output\",\n name=\"data_output\",\n method=\"convert_to_data\",\n ).to_dict()\n )\n elif field_value == \"DataFrame\":\n frontend_node[\"outputs\"].append(\n Output(\n display_name=\"DataFrame Output\",\n name=\"dataframe_output\",\n method=\"convert_to_dataframe\",\n ).to_dict()\n )\n\n return frontend_node\n\n def convert_to_message(self) -> Message:\n \"\"\"Convert input to Message type.\"\"\"\n input_value = self.input_data[0] if isinstance(self.input_data, list) else self.input_data\n\n # Handle string input by converting to Message first\n if isinstance(input_value, str):\n input_value = Message(text=input_value)\n\n result = convert_to_message(input_value)\n self.status = result\n return result\n\n def convert_to_data(self) -> Data:\n \"\"\"Convert input to Data type.\"\"\"\n input_value = self.input_data[0] if isinstance(self.input_data, list) else self.input_data\n\n # Handle string input by converting to Message first\n if isinstance(input_value, str):\n input_value = Message(text=input_value)\n\n result = convert_to_data(input_value)\n self.status = result\n return result\n\n def convert_to_dataframe(self) -> DataFrame:\n \"\"\"Convert input to DataFrame type.\"\"\"\n input_value = self.input_data[0] if isinstance(self.input_data, list) else self.input_data\n\n # Handle string input by converting to Message first\n if isinstance(input_value, str):\n input_value = Message(text=input_value)\n\n result = convert_to_dataframe(input_value)\n self.status = result\n return result\n" }, "input_data": { "_input_type": "HandleInput", "advanced": false, "display_name": "Input", "dynamic": false, "info": "Accept Message, Data or DataFrame as input", "input_types": [ "Message", "Data", "DataFrame" ], "list": false, "list_add_label": "Add More", "name": "input_data", "placeholder": "", "required": true, "show": true, "title_case": false, "trace_as_metadata": true, "type": "other", "value": "" }, "output_type": { "_input_type": "TabInput", "advanced": false, "display_name": "Output Type", "dynamic": false, "info": "Select the desired output data type", "name": "output_type", "options": [ "Message", "Data", "DataFrame" ], "placeholder": "", "real_time_refresh": true, "required": false, "show": true, "title_case": false, "tool_mode": false, "trace_as_metadata": true, "type": "tab", "value": "Data" } }, "tool_mode": false }, "showNode": true, "type": "TypeConverterComponent" }, "dragging": false, "id": "TypeConverterComponent-NClYY", "measured": { "height": 262, "width": 320 }, "position": { "x": 1862.6410760135172, "y": 352.5532847926838 }, "selected": false, "type": "genericNode" } ], "viewport": { "x": 238.7929189073834, "y": 429.665322362372, "zoom": 0.5549571588412672 } }, "description": "This template iterates over search results using LoopComponent and translates each result into Portuguese automatically. 🚀", "endpoint_name": null, "id": "73f89c62-43bb-4c5e-80f3-9bec6cb898d2", "is_component": false, "last_tested_version": "1.4.3", "name": "Research Translation Loop", "tags": [ "chatbots", "content-generation" ] }