Ggtcf

I try to save foreign key in django restframework serializer.

My goal is to save in database information from iframely.com and this part works good. But I need to also save it in specific category. After add field "Board(my category name field)" I have error: null value in column "board_id" violates not-null constraint

My model:

class Embed(models.Model):
 url = models.URLField(max_length=255)
 title = models.CharField(max_length=255)
 description = models.TextField()
 thumbnail_url = models.URLField(max_length=255)
 html = models.TextField()
 author = models.ForeignKey(User, on_delete=models.CASCADE)
 board = models.ForeignKey(Board, on_delete=models.CASCADE, verbose_name='Kategoria')

Form:

class SubmitEmbed(forms.Form):
 url = forms.URLField()
 board = forms.ModelChoiceField(queryset=Board.objects.all())

Serializer:

class EmbedSerializer(serializers.ModelSerializer):
 author = serializers.HiddenField(default=serializers.CurrentUserDefault())
 board = serializers.RelatedField(read_only=True)

 class Meta:
 model = Embed
 fields = '__all__'

View:

def save_embed(request):

 if request.method == "POST":
 form = SubmitEmbed(request.POST)
 if form.is_valid():
 url = form.cleaned_data['url']
 r = requests.get('http://iframe.ly/api/oembed?url=' + url + '&key=' + settings.IFRAMELY_KEY)
 json = r.json()
 serializer = EmbedSerializer(data=json, context='request': request)
 if serializer.is_valid():
 embed = serializer.save()
 return render(request, 'embed/embeds.html', 'embed': embed)
 else:
 form = SubmitEmbed()

 return render(request, 'embed/embedadd.html', 'form': form)

Its because you have

class EmbedSerializer(serializers.ModelSerializer):
 author = serializers.HiddenField(default=serializers.CurrentUserDefault())
 board = serializers.RelatedField(read_only=True)

You have set board to read_only. DRF will drop this field when this field is provided and DRF validation occurs.

You can remove the entire line and it will work.