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- How to set the file multiple file upload field as an Optional field in . . .
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- Python - FastAPI - Optional option for an UploadFile - GitHub
# this one doesn't like it when you send an empty value since the value is a string files: List[Union[UploadFile, None]] = File(None) # this one does not allow the user to upload multiple documents uploaded_file: UploadFile = File(None) # I can't upload docs through swagger-ui with this one which is needed, and does also not allow for uploading
- Using Request mixed Forms and Files with Annotation and optional fields
I'd like to post mixed form fields and upload files to a FastAPI endpoint The FastAPI documentation here states that you can mix params using Annotated and the python-multipart library e g @router post(" upload") async def upload_contents( an_int: Annotated[int, Form()], a_string: Annotated[str, Form()], some_files: Annotated[list[UploadFile], File()] ):
- Swagger UI not showing optional file upload button · fastapi fastapi . . .
Description For some reason, when using Python >= 3 10 optional type hints ( SomeType | None) in endpoints methods parameters, the upload button is not rendered in the Swagger UI Edit: For some reason, when making an UploadFile parameter optional, the upload button is not rendered in the Swagger UI The problem is just the same using the old typing Optional notation or UploadFile | None
- python requests - FastAPI file upload - Stack Overflow
FastAPI endpoints usually respond 422 when the request body is missing a required field, or there are non-expected fields, etc It seems that you are missing the fileb from your request body If this field is optional, you must declare it as follows in the endpoint definition: fileb: Optional[UploadFile] = File(None)
- Request Forms and Files - FastAPI - tiangolo
Warning You can declare multiple File and Form parameters in a path operation, but you can't also declare Body fields that you expect to receive as JSON, as the request will have the body encoded using multipart form-data instead of application json This is not a limitation of FastAPI, it's part of the HTTP protocol
- python - How to Upload File using FastAPI? - Stack Overflow
First, as per FastAPI documentation, you need to install python-multipart—if you haven't already—as uploaded files are sent as "form data" For instance: pip install python-multipart The examples below use the file attribute of the UploadFile object to get the actual Python file (i e , SpooledTemporaryFile), which allows you to call the SpooledTemporaryFile's methods, such as read() and
- Optional Multiple File Uploads Broken When Using Pydantic v2. 3. 0
Using fastapi <= 0 104 0 the swagger looks like however, using fastapi > 0 104 0 the file input field is broken not allowing me to upload files and make a request In both cases the versions of pydantic and pydantic_core are 2 7 1 and 2 18 2, respectively I'm not sure however if this is a fastapi issue or an issue of one of its dependencies
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