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Fixed #25468 -- Made DjangoJSONEncoder lazy string aware

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Thanks Stavros Korokithakis for the report and Tim Graham for the
review.
This commit is contained in:
Claude Paroz 2015-09-26 20:15:26 +02:00
parent 87630bc304
commit b7ade64529
4 changed files with 28 additions and 5 deletions
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7
docs/topics/serialization.txt
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@ -256,16 +256,15 @@ Date and datetime related types are treated in a special way by the JSON
serializer to make the format compatible with `ECMA-262`_.
Be aware that not all Django output can be passed unmodified to :mod:`json`.
In particular, :ref:`lazy translation objects <lazy-translations>` need a
`special encoder`_ written for them. Something like this will work::
For example, if you have some custom type in an object to be serialized, you'll
have to write a `special encoder`_ for it. Something like this will work::
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):
if isinstance(obj, YourCustomType):
return force_text(obj)
return super(LazyEncoder, self).default(obj)