fix: Optimize Setting of Output Required Inputs (#4389)

Update component.py

Fix required inputs not updated if its already defined

src/backend/base/langflow/components/agents/__init__.py

@@ -1,3 +1,4 @@
+from .agent import AgentComponent
 from .crewai import CrewAIAgentComponent
 from .csv import CSVAgentComponent
 from .hierarchical_crew import HierarchicalCrewComponent
@@ -26,4 +27,5 @@ __all__ = [
     "VectorStoreAgentComponent",
     "VectorStoreRouterAgentComponent",
     "XMLAgentComponent",
+    "AgentComponent",
 ]

src/backend/base/langflow/components/models/openai.py

@@ -10,6 +10,7 @@ from langflow.field_typing import LanguageModel
 from langflow.field_typing.range_spec import RangeSpec
 from langflow.inputs import BoolInput, DictInput, DropdownInput, FloatInput, IntInput, SecretStrInput, StrInput
 from langflow.inputs.inputs import HandleInput
+from langflow.io import Output
 
 
 class OpenAIModelComponent(LCModelComponent):
@@ -81,6 +82,10 @@ class OpenAIModelComponent(LCModelComponent):
             input_types=["OutputParser"],
         ),
     ]
+    outputs = [
+        Output(display_name="Text", name="text_output", method="text_response"),
+        Output(display_name="Language Model", name="model_output", method="build_model"),
+    ]
 
     def build_model(self) -> LanguageModel:  # type: ignore[type-var]
         # self.output_schema is a list of dictionaries

src/backend/base/langflow/custom/custom_component/component.py

@@ -369,6 +369,8 @@ class Component(CustomComponent):
 
     def _set_output_required_inputs(self) -> None:
         for output in self.outputs:
+            if output.required_inputs:
+                continue
             if not output.method:
                 continue
             method = getattr(self, output.method, None)

src/backend/tests/unit/custom/custom_component/test_component.py

@@ -1,5 +1,5 @@
 import pytest
-from langflow.components.agents import CrewAIAgentComponent, ToolCallingAgentComponent
+from langflow.components.agents import AgentComponent, CrewAIAgentComponent, ToolCallingAgentComponent
 from langflow.components.helpers import SequentialTaskComponent
 from langflow.components.inputs import ChatInput
 from langflow.components.models import OpenAIModelComponent
@@ -32,33 +32,44 @@ def _assert_all_outputs_have_different_required_inputs(outputs: list[Output]):
     return True
 
 
-def test_set_required_inputs():
+def test_set_required_inputs_chat_input():
     chatinput = ChatInput()
-
     assert all(_output_required_inputs_are_in_inputs(output, chatinput._inputs) for output in chatinput.outputs)
     assert _assert_all_outputs_have_different_required_inputs(chatinput.outputs)
 
 
-def test_set_required_inputs_various_components():
-    chatinput = ChatInput()
+def test_set_required_inputs_chat_output():
     chatoutput = ChatOutput()
-    task = SequentialTaskComponent()
-    tool_calling_agent = ToolCallingAgentComponent()
-    openai_component = OpenAIModelComponent()
-
-    assert all(_output_required_inputs_are_in_inputs(output, chatinput._inputs) for output in chatinput.outputs)
     assert all(_output_required_inputs_are_in_inputs(output, chatoutput._inputs) for output in chatoutput.outputs)
-    assert all(_output_required_inputs_are_in_inputs(output, task._inputs) for output in task.outputs)
-    assert all(
-        _output_required_inputs_are_in_inputs(output, tool_calling_agent._inputs)
-        for output in tool_calling_agent.outputs
-    )
+    assert _assert_all_outputs_have_different_required_inputs(chatoutput.outputs)
+
+
+def test_set_required_inputs_openai_component():
+    openai_component = OpenAIModelComponent()
     assert all(
         _output_required_inputs_are_in_inputs(output, openai_component._inputs) for output in openai_component.outputs
     )
-
-    assert _assert_all_outputs_have_different_required_inputs(chatinput.outputs)
-    assert _assert_all_outputs_have_different_required_inputs(chatoutput.outputs)
-    assert _assert_all_outputs_have_different_required_inputs(task.outputs)
-    assert _assert_all_outputs_have_different_required_inputs(tool_calling_agent.outputs)
     assert _assert_all_outputs_have_different_required_inputs(openai_component.outputs)
+
+
+def test_set_required_inputs_tool_calling_agent_component():
+    tool_calling_agent_component = ToolCallingAgentComponent()
+    assert all(
+        _output_required_inputs_are_in_inputs(output, tool_calling_agent_component._inputs)
+        for output in tool_calling_agent_component.outputs
+    )
+    assert _assert_all_outputs_have_different_required_inputs(tool_calling_agent_component.outputs)
+
+
+def test_set_required_inputs_agent_component():
+    agent_component = AgentComponent()
+    assert all(
+        _output_required_inputs_are_in_inputs(output, agent_component._inputs) for output in agent_component.outputs
+    )
+    assert _assert_all_outputs_have_different_required_inputs(agent_component.outputs)
+
+
+def test_set_required_inputs_sequential_task_component():
+    task = SequentialTaskComponent()
+    assert all(_output_required_inputs_are_in_inputs(output, task._inputs) for output in task.outputs)
+    assert _assert_all_outputs_have_different_required_inputs(task.outputs)