fix: Solves Issues with Set Function in Component Class and Enhance Input Handling (#4258)

* Enhance Component Input Handling and Add Unit Tests

Enhance component input handling and add unit tests for mixed input scenarios.

* [autofix.ci] apply automated fixes

* fix: handle JSON serialization for lists and dicts in _process_connection_or_parameters

- Updated the _process_connection_or_parameters function to handle lists and dictionaries properly.
- Ensured that each element in a list is checked for serializability and converted to a string if necessary.
- Added logic to convert dictionaries to JSON strings, handling non-serializable contents by converting them to strings.
- This change prevents JSON serialization errors when processing component parameters.

* reverting the changes

* [autofix.ci] apply automated fixes

* Update component.py

updates _process_connection_or_parameters to handles situations where the list is not all component.

Also handles any serialisation isseus caused by _process_connection_or_parameters

* [autofix.ci] apply automated fixes

* Update component.py

update make sure it is not a list str | int | float | bool | type(None)

Serialisation removed

---------

Co-authored-by: autofix-ci[bot] <114827586+autofix-ci[bot]@users.noreply.github.com>

src/backend/base/langflow/base/tools/component_tool.py

@@ -47,6 +47,8 @@ def build_description(component: Component, output: Output) -> str:
 
 def _build_output_function(component: Component, output_method: Callable):
     def output_function(*args, **kwargs):
+        # set the component with the arguments
+        # set functionality was updatedto handle list of components and other values separately
         component.set(*args, **kwargs)
         return output_method()
 

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

@@ -442,7 +442,8 @@ class Component(CustomComponent):
 
     def _process_connection_or_parameters(self, key, value) -> None:
         # if value is a list of components, we need to process each component
-        if isinstance(value, list):
+        # Note this update make sure it is not a list str | int | float | bool | type(None)
+        if isinstance(value, list) and not any(isinstance(val, str | int | float | bool | type(None)) for val in value):
             for val in value:
                 self._process_connection_or_parameter(key, val)
         else: