ImageSpecField not getting serialized

[exaroth]

Hello there,

I'm writing a simple image gallery site in django, and im using Imagekit for generating thumbnails, however i've got a problem when serializing data into JSON for an AJAX view, namely the ImageSpecField is getting ommited when data is being serialized (by django built in serializer), is this a bug or maybe i'm missing something here? I think by default it should return instance.thumbnail.url when the field is being serialized (assuming thumbnail is ImageSpecField)

[matthewwithanm]

Sorry, I'm not really familiar with Django's serializers. I wouldn't have expected serialization to work by default on custom field types so I'd say this is more of a feature request than a bug, though it is something we should support.

[exaroth]

Thanks for the reply,
I solved this problem by manually defining a method on the model which converts it to dictionary which then gets serialized into JSON, this way I was able to specify custom attributes of the model to be serialized.

[ChillyBwoy]

Hello.
I have the same problem with ImageSpecField – caffeinehit/django-oauth2-provider#101

All you need is to add method value_to_string to ImageSpecField class
https://docs.djangoproject.com/en/1.6/howto/custom-model-fields/#django.db.models.Field.value_to_string

[matthewwithanm]

Thanks for the tip @ChillyBwoy! Unfortunately, it seems like the serializers only use the stuff in local_fields and virtual fields like ImageSpecField don't get added to that. If you've got any ideas, though, let me know!