Django Rest Framerowk setting user/owner to a ModelSerializer (Tweet)

Question

I am new to DRF. While creating the twitter app I faced a problem with serializers. Since the user is required - I need somehow to pass the actual user to the TweetSerializer class. I have tried different methods that did not work.

This is giving me an error

 owner = serializers.HiddenField(default=serializers.CurrentUserDefault())

error image

error image continued

also i have tried to se the user by passing it tot he serializer constructor

serializer = TweetSerializer(owner=request.user)

also did not work

class TweetSerializer(serializers.ModelSerializer):
    try:
        owner = serializers.HiddenField(
            default=serializers.CurrentUserDefault()
        )
    except Exception as exception:
        print(exception)
    
    class Meta:
        model = Tweet
        fields = '__all__'
        read_only_fields = ['owner']

    def validate(self, attrs):
        if len(attrs['content']) > MAX_TWEET_LENGTH:
            raise serializers.ValidationError("This tweet is too long")
        return attrs

class Tweet(models.Model):
    id = models.AutoField(primary_key=True)
    owner = models.ForeignKey('auth.User', related_name='tweets', on_delete=models.CASCADE)
    content = models.TextField(blank=True, null=True)
    image = models.FileField(upload_to='images/', blank=True, null=True)

    class Meta:
        ordering = ['-id']

@api_view(['POST'])
def tweet_create_view(request, *args, **kwargs):
    serializer = TweetSerializer(data=request.POST)
    user = request.user

    if serializer.is_valid():
        serializer.save()
    else:
        print(serializer.errors)
        return JsonResponse({}, status=400)
    try:
        pass
    except Exception as e:
            print(str(e))
            return JsonResponse({}, status=400, safe=False)
    return JsonResponse({}, status=201)

Answer 1

The solution was to pass a context as I read from drf documentation for CurrentUserDefault()

@api_view(['POST'])
def tweet_create_view(request, *args, **kwargs):
    context = {
            "request" : request
        }
    serializer = TweetSerializer(data=request.POST, context=context)
    if serializer.is_valid():
        serializer.save()
    return JsonResponse({}, status=201)

A default class that can be used to represent the current user. In order to use this, the 'request' must have been provided as part of the context dictionary when instantiating the serializer.