Using Django-taggit with django-rest-framework, i'm not able to save my tags

Question

I'm trying to figure it out why when i submit my form, my tags are not saved in my db. Pretty new with the django-rest-framework and Django-taggit too, i think i'm doing something wrong :) First, before making my API with the rest-framework, i was using a generic view (CreateView and UpdateView) to register/validate my event. It was working fine but i decided to go further and try to build an API since i'm using Angularjs now. Now my model event is created but without my tag and i have some errors. I put some code and i'll describe my errors after. events/models.py ``` class Event(models.Model): [...] title = models.CharField(max_length=245, blank=False) description = models.TextField(max_length=750, null=True, blank=True) start = models.DateTimeField() end = models.DateTimeField() created_at = models.DateTimeField(editable=False) updated_at = models.DateTimeField(editable=False) slug = AutoSlugField(populate_from='title', unique=True, editable=False) expert = models.BooleanField(choi…

Accepted Answer

meet the same question. But I just want to save the tag list directly by TaggableManager (without TagListSerializer and TagsListAPIView). My solution is:

```
class MyModel(models.Model):
    ...
    tags = TaggableManager(blank=True)

def get_tags_display(self):
        return self.tags.values_list('name', flat=True)

class MyModelSerializer(serializers.HyperlinkedModelSerializer):
    ...
    tags = serializers.Field(source='get_tags_display') # more about: http://www.django-rest-framework.org/api-guide/fields#generic-fields
    ...

class MyModelViewSet(viewsets.ModelViewSet):
    ...
    def post_save(self, *args, **kwargs):
        if 'tags' in self.request.DATA:
            self.object.tags.set(*self.request.DATA['tags']) # type(self.object.tags) == <taggit.managers._TaggableManager>
        return super(MyModelViewSet, self).post_save(*args, **kwargs)
```

The post data of tags data will be ['tagA', 'tagB',...], the TaggableManager will handle it. Thx.

For DRF>3.1, you just need to override create and update in your ModelSerializer class:

```
class StringListField(serializers.ListField): # get from http://www.django-rest-framework.org/api-guide/fields/#listfield
    child = serializers.CharField()

def to_representation(self, data):
        return ' '.join(data.values_list('name', flat=True)) # you change the representation style here.

class MyModelSerializer(serializers.ModelSerializer):
    tags = StringListField()

class Meta:
        model = models.MyModel

def create(self, validated_data):
        tags = validated_data.pop('tags')
        instance = super(MyModelSerializer, self).create(validated_data)
        instance.tags.set(*tags)
        return instance

def update(self, instance, validated_data):
        # looks same as create method
```

Using Django-taggit with django-rest-framework, i'm not able to save my tags

Solution

Problem