CODEWITHSUNDEEP
pythondjangotastypie
Cibomank
Cibomank

Reputation: 21

Return exception errors as JSONs in Tastypie

This morning I was developing my Django REST API with Tastypie when I encountered a problem I don't know how to solve. I have a Resource that looks like this:

class UserSignUpResource(ModelResource):

    class Meta:
        object_class = User
        queryset = User.objects.all()
        allowed_methods = ['post']
        include_resource_uri = False
        resource_name = 'newuser'
        serializer = CamelCaseJSONSerializer(formats=['json'])
        authentication = Authentication()
        authorization = Authorization()
        always_return_data = True
        validation = FormValidation(form_class=UserSignUpForm)

This Resource receives JSON-formated data and creates a new Resource (I only permmit POST ops). So, first the data is checked through the: 

validation = FormValidation(form_class=UserSignUpForm)

The thing is, that if data is incorrect, it does return a ImmediateHttpResponse. But I would want to capture this exception and create a JSON like this:

{"status": False, "code": 777, "errors": {"pass":["Required"], ...}

So, I override my wrap_view and add the following code snippet:

except ImmediateHttpResponse, e:
    bundle = {"code": 777, "status": False, "error": e.response.content}
    return self.create_response(request, bundle, response_class = HttpBadRequest)

This code captures the exception properly, but it has a problem. e.response contains a unicode string with the errors. So, the response it finally gives is 

{"code": 777, 
"error": "{\"birthdayDay\": [\"This field is required.\"], 
         \"birthdayMonth\": [\"This field is required.\"], 
         \"birthdayYear\": [\"This field is required.\"], 
         \"csrfmiddlewaretoken\": [\"This field is required.\"], 
         \"email\": [\"This field is required.\"], 
         \"email_2\": [\"This field is required.\"], 
         \"firstName\": [\"This field is required.\"], 
         \"gender\": [\"This field is required.\"], 
         \"lastName\": [\"This field is required.\"], 
         \"password1\": [\"This field is required.\"]}", 
"status": false}

That damned \ and the first " are killing me. On the other side, the Frontend developer, who is working with AJAX, tells me that he can't parse the errors.

Am I doing anything wrong here? Does anybody knows how to convert the exception response, into a JSON?

Upvotes: 1

Views: 1707

Answers (1)

dokkaebi
dokkaebi

Reputation: 9190

You probably want to send the response content as json, not as a serialized json string:

import json
bundle = {"code": 777, "status": False, "error": json.loads(e.response.content)}

Upvotes: 2

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