✨ Add support for declaring UploadFile parameters without explicit File()

[tiangolo]

✨ Add support for declaring UploadFile parameters without explicit File().

For example, this is now supported:

from fastapi import FastAPI, UploadFile

app = FastAPI()

@app.post("/uploadfile/")
async def create_upload_file(file: UploadFile):
    return {"filename": file.filename}

This also updates UploadFile to declare its own JSON Schema, and removes the equivalent and no longer necessary utility function that did a workaround for that.

This also includes docs and tests for the variations of UploadFile.

[github-actions]

📝 Docs preview for commit 52efd58 at: https://61eda7ca0b769244610550d0--fastapi.netlify.app

[codecov]

Codecov Report

Merging #4469 (5f4f43f) into master (59b1f35) will not change coverage.
The diff coverage is 100.00%.

@@            Coverage Diff             @@
##            master     #4469    +/-   ##
==========================================
  Coverage   100.00%   100.00%            
==========================================
  Files          511       521    +10     
  Lines        12845     13078   +233     
==========================================
+ Hits         12845     13078   +233     

Impacted Files	Coverage Δ
docs_src/request_files/tutorial001.py	100.00% <100.00%> (ø)
docs_src/request_files/tutorial001_02.py	100.00% <100.00%> (ø)
docs_src/request_files/tutorial001_02_py310.py	100.00% <100.00%> (ø)
docs_src/request_files/tutorial001_03.py	100.00% <100.00%> (ø)
docs_src/request_files/tutorial002.py	100.00% <100.00%> (ø)
docs_src/request_files/tutorial002_py39.py	100.00% <100.00%> (ø)
docs_src/request_files/tutorial003.py	100.00% <100.00%> (ø)
docs_src/request_files/tutorial003_py39.py	100.00% <100.00%> (ø)
fastapi/datastructures.py	100.00% <100.00%> (ø)
fastapi/dependencies/utils.py	100.00% <100.00%> (ø)
... and 5 more

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[github-actions]

🚀 Deployed on https://61eda8d65e6fd016a7d81f90--fastapi.netlify.app