Returning pure Django form errors in JSON

Question

I have a Django form which I\'m validating in a normal Django view. I\'m trying to figure out how to extract the pure errors (without the HTML formatting). Below is the code

Answer 1

json.dumps can't serialize django's proxy function (like lazy translations).

As documented you should create a new Encoder class:

import json
from django.utils.functional import Promise
from django.utils.encoding import force_text
from django.core.serializers.json import DjangoJSONEncoder

class LazyEncoder(DjangoJSONEncoder):
    def default(self, obj):
        if isinstance(obj, Promise):
            return force_text(obj)
        return super(LazyEncoder, self).default(obj)

Use the new Encoder like this:

json.dumps(s, cls=LazyEncoder)

That's all :)