fix: Fix parameter schema generation in ComponentTool when using inputs_from_state (#9795)

* Fix for removing parameters from the parameters schema when using inputs_from_state

* Add reno

Author: sjrl

haystack/tools/component_tool.py

@@ -278,7 +278,7 @@ def _create_tool_parameters_schema(self, component: Component, inputs_from_state
         fields: dict[str, Any] = {}
 
         for input_name, socket in component.__haystack_input__._sockets_dict.items():  # type: ignore[attr-defined]
-            if inputs_from_state is not None and input_name in inputs_from_state:
+            if inputs_from_state is not None and input_name in list(inputs_from_state.values()):
                 continue
             input_type = socket.type
             description = param_descriptions.get(input_name, f"Input '{input_name}' for the component.")

releasenotes/notes/fix-parameter-schema-generation-component-tool-c3353ff7437115a1.yaml

@@ -0,0 +1,4 @@
+---
+fixes:
+  - |
+    Fixed parameter schema generation in `ComponentTool` when using `inputs_from_state`. Previously, parameters were only removed from the schema if the state key and parameter name matched exactly. For example, `inputs_from_state={"text": "text"}` removed `text` as expected, but `inputs_from_state={"state_text": "text"}` did not. This is now resolved, and such cases work as intended.

test/tools/test_component_tool.py

@@ -184,6 +184,16 @@ def test_from_component_with_inputs_from_state(self):
             "description": "A simple component that generates text.",
         }
 
+    def test_from_component_with_inputs_from_state_different_names(self):
+        tool = ComponentTool(component=SimpleComponent(), inputs_from_state={"state_text": "text"})
+        assert tool.inputs_from_state == {"state_text": "text"}
+        # Inputs should be excluded from schema generation
+        assert tool.parameters == {
+            "type": "object",
+            "properties": {},
+            "description": "A simple component that generates text.",
+        }
+
     def test_from_component_with_outputs_to_state(self):
         tool = ComponentTool(component=SimpleComponent(), outputs_to_state={"replies": {"source": "reply"}})
         assert tool.outputs_to_state == {"replies": {"source": "reply"}}