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🐛 fix(custom_component.py): extract inner type from return type if it starts with 'list' or 'List' to handle list types correctly

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Gabriel Luiz Freitas Almeida 2023-08-22 16:12:30 -03:00
commit 70f98f9150
1 changed files with 5 additions and 0 deletions
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src/backend/langflow/interface/custom/custom_component.py
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@ -3,6 +3,7 @@ from fastapi import HTTPException
from langflow.interface.custom.constants import CUSTOM_COMPONENT_SUPPORTED_TYPES from langflow.interface.custom.constants import CUSTOM_COMPONENT_SUPPORTED_TYPES
from langflow.interface.custom.component import Component from langflow.interface.custom.component import Component
from langflow.interface.custom.directory_reader import DirectoryReader from langflow.interface.custom.directory_reader import DirectoryReader
from langflow.interface.custom.utils import extract_inner_type
from langflow.utils import validate from langflow.utils import validate
@ -122,6 +123,10 @@ class CustomComponent(Component, extra=Extra.allow):
return_type = build_method["return_type"] return_type = build_method["return_type"]
if not return_type: if not return_type:
return [] return []
# If list or List is in the return type, then we remove it and return the inner type
if return_type.startswith("list") or return_type.startswith("List"):
return_type = extract_inner_type(return_type)
# If the return type is not a Union, then we just return it as a list # If the return type is not a Union, then we just return it as a list
if "Union" not in return_type: if "Union" not in return_type:
return [return_type] if return_type in self.return_type_valid_list else [] return [return_type] if return_type in self.return_type_valid_list else []