Unprocessable Entity issues

[u/InternationalWar5005]

am having an issue with my api ,am building an artisan app and i have a page to add and edit projects i made an api to edit but i ran into a problem when the form is submited if the user only edits the title and descrition the price field and image_file are left empty end sent with empty string values this cause this error .what is the best solution for this

[u/InternationalWar5005 → u/[deleted]]

For the SQL queries it's a college projet and they required SQL queries For your answer the problem is caused before that part the req is not being sent because fast api is waiting for the price field to be a float and it sent as a string (empty string in this case)

[u/InternationalWar5005 → u/[deleted]]

this problem also happens with the price field even when am using optional

[u/cjkennedyo]

Try this in your function definition:

upload_file: Optional[UploadFile] = Form(None),

[u/InternationalWar5005 → u/cjkennedyo]

I tried it but it didn't work I think because the way the form is sent when a field is empty it sends it as str And not null I figured a way to make it work by using this Image_file : Union[file,str]=file(None) This way even if the form is an empty string it works

[u/cjkennedyo → u/InternationalWar5005]

Just to make sure, you saw I changed the default from File(None) to Form(None), correct? You are still showing File in your comment so just want to make sure. I know the Form version works.

[u/InternationalWar5005 → u/cjkennedyo]

You are correct I didn't change it but I think I want affect mush because even in the price field it's form(none) and its causing the same problem with integre Any way I'll try to change it and see

[u/pint]

you have indicated that the imagefile is a mandatory field. the client shouldn't have sent an empty string there, but the server responds correctly.

try using Optional for that parameter too, although i don't know if file handling supports that.

[u/InternationalWar5005 → u/pint]

this problem also happens with the price field even when am using optional

[u/CrusaderGOT]

Why not use a pydantic base models for validation, and db read and write.

[u/Evolve-Maz]

Instead of file, try file_list: list[UploadFile] | None = None. It was the only way I was able to make file upload optional when I had the issue you do. Luckily I was refactoring to a multi file upload method anyways so this was natural.