Tag Archives: drf

django rest framework – ensure foreignKey field is optional [SOLVED]

I am using ModelSerializers and faced hardtime ensuring foreign key could be optional: models.py: class Tag(models.Model): label = models.CharField(max_length=100) group = models.ForeignKey(TagGroup, null=True, blank=True, related_name=’tags’ class TagGroup(models.Model): label = models.CharField(max_length=100) serializers.py: class TagSerializer(serializers.ModelSerializer): class Meta: model = Tag fields = (‘id’, ‘label’, ‘group’) group = TagGroupSerializer() class TagGroupSerializer(serializers.ModelSerializer): class Meta: model = TagGroup fields = (‘id’, ‘label’,) With above setup, though foreignKey field is clearly defined as nullable and not-mandatory in models.py, i kept getting following error: ‘{“group”:[“This field may not be null.”]}’ Reason for this is that you also need to specify field as nullable and non-mandatory in the […]