fix: Vector store output can only be dataframe

[Yukiyukiyeah]

This pull request includes changes to improve method naming, update references to a renamed class, and reformat JSON for consistency and readability. The most important changes are grouped into three themes: method renaming, class reference updates, and JSON reformatting.

Method Renaming:

• Renamed the as_dataframe method to vector_search_results in src/backend/base/langflow/base/vectorstores/model.py to better reflect its functionality. This change also updated the corresponding output method references. [1] [2] [3]

Class Reference Updates:

• Updated references from Component to CustomComponent in src/backend/base/langflow/custom/directory_reader/directory_reader.py to align with the renamed class. [1] [2]

JSON Reformatting:

• Reformatted the Document Q&A.json file in src/backend/base/langflow/initial_setup/starter_projects to use multi-line arrays for output_types, inputTypes, and other similar fields, improving readability and consistency. [1] [2] [3] [4] [5] [6] [7] [8] [9] [10] [11] [12] [13] [14] [15] [16] [17] [18] [19] [20] [21] [22] [23] [24] [25] [26] [27]

[Copilot]

Pull Request Overview

This PR streamlines the vector store output interface by renaming the as_dataframe method to vector_search_results, updates class references to match a rename from Component to CustomComponent, and reformats starter-project JSON files for readability.

• Renamed as_dataframe to vector_search_results in the base and local DB vectorstore components
• Updated imports and instantiation from Component to CustomComponent in the directory reader
• Reformatted multi-line JSON arrays in the starter project configuration

Reviewed Changes

Copilot reviewed 4 out of 8 changed files in this pull request and generated no comments.

File	Description
src/backend/base/langflow/custom/directory_reader/directory_reader.py	Import and instantiation updated from Component to CustomComponent
src/backend/base/langflow/components/vectorstores/local_db.py	Changed Output method reference to vector_search_results
src/backend/base/langflow/base/vectorstores/model.py	Renamed as_dataframe method and adjusted the outputs list

Files not reviewed (4)

• src/backend/base/langflow/initial_setup/starter_projects/Document Q&A.json: Language not supported
• src/backend/base/langflow/initial_setup/starter_projects/Hybrid Search RAG.json: Language not supported
• src/backend/base/langflow/initial_setup/starter_projects/Portfolio Website Code Generator.json: Language not supported
• src/backend/base/langflow/initial_setup/starter_projects/Text Sentiment Analysis.json: Language not supported

Comments suppressed due to low confidence (4)

src/backend/base/langflow/base/vectorstores/model.py:82

• The Search Results output entry was removed from this list, which drops the raw search_documents output. If consumers still need the unformatted list, reintroduce an Output for the search_documents method.

outputs = [        Output(display_name="DataFrame", name="dataframe", method="vector_search_results"),]

src/backend/base/langflow/components/vectorstores/local_db.py:101

• [nitpick] The display_name remains “DataFrame” while the method is vector_search_results; consider renaming the display to “Vector Search Results” to avoid confusion.

Output(display_name="DataFrame", name="dataframe", method="vector_search_results"),

src/backend/base/langflow/base/vectorstores/model.py:175

• Ensure existing tests are updated or new tests are added to cover the renamed vector_search_results method and verify it returns the expected DataFrame structure.

def vector_search_results(self) -> DataFrame:

src/backend/base/langflow/base/vectorstores/model.py:175

• [nitpick] Add a docstring for vector_search_results to explain that it wraps search_documents in a DataFrame and note any important behavior or edge cases.

def vector_search_results(self) -> DataFrame:

[edwinjosechittilappilly]

May I know why we should change this in this PR?

[Yukiyukiyeah]

I had an error when running the backend of cannot find _get_function_entrypoint_return_type so I changed this line, not sure if we should do so