Return django validation errors in JSON format

Question

Suppose I am building a registration/signup or any form in general for my web app in Django and I want the same form for Web/Android/IOS. So I want the frontend and backend(Django) to communicate via JSON. My question is how can I send validation errors in JSON format if the user on any platform(Web/Android/IOS) gives me invalid data like "the email already exists" type of errors?

I need the best way possible to handle this type of scenarios and well-detailed example/explanation will be much appreciated.

Thank You.

Alasdair · Accepted Answer · 2017-03-29 09:56:25Z

3

The form's errors attribute has an as_json method you can use.

if form.is_valid():
    # process valid form
else:
    errors_json = form.errors.as_json()
    ...

Note the warning in the docs about escaping the errors to avoid cross site scripting attacks.

answered Mar 29, 2017 at 9:56

Alasdair

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4 Comments

Anmol Gulati Over a year ago

How will the Android/IOS catch these error messages? The errors are just stored in the variable errors_json.

Anmol Gulati Over a year ago

But I think the response consists of only those files/urls which are present inside the django's project folder.

Mohcen CH Over a year ago

can you explain how to loop through those errors in the js after getting them from the view with ajax

Mohcen CH Over a year ago

ok i posted a new question here is the link stackoverflow.com/questions/64648198/… i hope you help me

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