CODEWITHSUNDEEP
pythondjangopostdjango-rest-framework
Nevenoe
Nevenoe

Reputation: 1052

Django-Rest-Framework, POST operation: fields is not empty but DRF says is required

Well, i have this model:

class Application(models.Model):
    name = models.CharField("nom", unique=True, max_length=255)
    sonarQube_URL = models.CharField("Url SonarQube", max_length=255,
                                 blank=True, null=True)

    def __unicode__(self):
        return self.name

and this serializer:

class ApplicationSerializer(serializers.ModelSerializer):
    nom = serializers.CharField(source='name', required=True, allow_blank=True)
    url_sonarqube = serializers.CharField(source='sonarQube_URL', required=False)
    flows = FlowSerializer(many=True, read_only=True)

    class Meta:
        model = Application
        fields = ('id', 'nom', 'url_sonarqube', 'flows')

My view is simple:

class ApplicationViewSet(viewsets.ModelViewSet):
    queryset = Application.objects.all()
    serializer_class = ApplicationSerializer

I use this model of permissions in my settings.py:

REST_FRAMEWORK = {
    'DEFAULT_PERMISSION_CLASSES': ('rest_framework.permissions.DjangoModelPermissions',),
    'PAGE_SIZE': 10,
    'TEST_REQUEST_DEFAULT_FORMAT': 'json',
    'TEST_REQUEST_RENDERER_CLASSES': (
    'rest_framework.renderers.MultiPartRenderer',
    'rest_framework.renderers.JSONRenderer',
    'rest_framework.renderers.TemplateHTMLRenderer'
    )
}

When I use POST operation on DRF interface (in HTML Form), I filled all the fields of the application Item. As you can see, "required" parameter of "nom" is set to True. And, this is the problem: even if 'nom' is not empty, DRF says "this field is required!". So, I can't POST a new application item. I don't understand why it not works... Where is the mistake?

Upvotes: 0

Views: 1260

Answers (3)

Vincent Kioko
Vincent Kioko

Reputation: 26

I do not recommend adding blank=True and null=True since as per your model you want unique=True. This will result to a conflict whenever the second element with name blank is added. if nom is required, then remove allow_blank=True so as to always require name.

Upvotes: 0

Venkat
Venkat

Reputation: 36

The error you got is related to the Django Model(Application). It was failing in model level not in serializer level. Add null=True and blank=True to name field in Application model.

Upvotes: 1

Lauri Elias
Lauri Elias

Reputation: 1299

Try to keep your code in English, you can use Django's i18n to translate stuff, also use blank and null for your name field:

class Application(models.Model):
    name = models.CharField(_('name'), max_length=255, blank=True, null=True)
    sonarqube_url = models.CharField(_('SonarQube URL'), max_length=255, blank=True, null=True)

    def __unicode__(self):
        return self.name


class ApplicationSerializer(serializers.ModelSerializer):
    class Meta:
        model = Application
        fields = ('id', 'name', 'sonarqube_url')

Let's save flows for later as you don't even have a model relation for them.

Upvotes: 1

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