I am trying to create an api using django tastypie. in my project I have two models Question and Answers. The Answers model has the foreign key to question model. In my api.py I have two resources QuestionResource and AnswerResource.
What i want to do is that when i retrieve a question instance using api call i want to retrieve the related answers instance also. I tried this using adding a key in bundle.data dict and implement it in alter_detail_data_to_serialize. bt what i get as response is a list of objects not the serialized json object. what I got is
and my Code is
class QuestionResource(ModelResource):
answer=fields.ToManyField('quiz.api.AnswerResource', 'answer', null=True, full=True)
topic=fields.ForeignKey(TopicResource,'topic')
difficulty=fields.ForeignKey(DifficultyLevelResource, 'difficulty')
class Meta:
queryset = Question.objects.all()
resource_name = 'question'
authorization = Authorization()
serializer = PrettyJSONSerializer()
detail_allowed_methods = ['get', 'post', 'put', 'delete', 'patch']
always_return_data = True
filtering={'id':ALL,
'answer':ALL_WITH_RELATIONS
}
def alter_detail_data_to_serialize(self, request, data):
data.data['answers']=[obj for obj in data.obj.answer_set.all()]
return data
def dehydrate(self,bundle):
bundle.data['related']=bundle.obj.answer_set.all()
return bundle
class AnswerResource(ModelResource):
question=fields.ToOneField('quiz.api.QuestionResource', 'answer', null=True,full=True)
class Meta:
queryset = Answer.objects.all()
resource_name = 'answer'
authorization = Authorization()
serializer = PrettyJSONSerializer()
detail_allowed_methods = ['get', 'post', 'put', 'delete', 'patch']
always_return_data = True
filtering={
'question':ALL_WITH_RELATIONS
}
It was simple, as per the api documentation i had to pass an attirbute to the related field.
class QuestionResource(ModelResource):
answer=fields.ToManyField('quiz.api.AnswerResource', 'answer_set', null=True, full=True)
class AnswerResource(ModelResource):
question=fields.ToOneField('quiz.api.QuestionResource', 'question', null=True)
read the docs http://django-tastypie.readthedocs.org/en/latest/resources.html#reverse-relationships