How to get value of ManyToMany field rather than their ids?-CodePudding

I have three models, as shown below:

class TagsModel(models.Model):
    title = models.CharField(max_length=200)

    def __str__(self):
        return self.title
 
class ImagesModel(models.Model):
    title = models.CharField(max_length=500, default='image')
    image_cdn = models.TextField(null=True, blank=True)
    image = models.ImageField(upload_to='articles/images/', null=True, blank=True)
    timestamp = models.DateTimeField(auto_now=True)
    update = models.DateTimeField(auto_now_add=True)
    def __str__(self):
        return self.title


class ArticlesModel(models.Model):
    title = models.CharField(max_length=1000)
    category = models.CharField(max_length=40, choices=category_choices, default=('General', 'General'))
    summary = models.TextField(blank=False, null=True, max_length=5000)
    tags = models.ManyToManyField(TagsModel, blank=True)
    image = models.ImageField(blank=True, null=True, upload_to='articles/article-image/')
    image_cdn = models.TextField(blank=True, null=True)
    image_src = models.ForeignKey(ImagesModel, related_name='Image_cdn',  on_delete=models.PROTECT, null=True)
    images = models.ManyToManyField(ImagesModel, blank=True) 
    json = models.JSONField(null=True, blank=True)
    html = models.TextField(blank=True, null=True)
    is_published = models.BooleanField(default=False)
    update = models.DateTimeField(auto_now_add=True)
    timestamp = models.DateTimeField(auto_now=True)

    def __str__(self):
        return self.title

    def get_absolute_url(self):
        return reverse('articles:article_detail', kwargs={'article_id': self.id})

And in the view.py

class ArticlesView(APIView):

    def get(self, request):
        articles_list = ArticlesModel.objects.all()
        images_list = ImagesModel.objects.all()
        images_serializer = ImagesSerializer(images_list, many=True)
        articles_serializer = ArticlesListSerializer(articles_list, many=True)
        return Response({
            'images':images_serializer.data,
            'articles':articles_serializer.data
        })

So when I send request I get results like this:

The problem here is that I get the ids of Images and tags and not the objects themselves! I am asking if there's a way in django/DRF to get the objects (images, tags) included with the queries of Articles and not only their ids?

CodePudding user response：

in your serializer of article add stringrelated field like this...

Solution ------ 1

class ArticleModelSerializer(serializers.ModelSerializer):
    tags = serializers.StringRelatedField()
    image = serializers.CharField(source='image.image')
    class Meta:
        model = ArticleModel 
        fields = '__all__'

Solution ----- 2

class ArticleModelSerializer(serializers.ModelSerializer):
    
    class Meta:
        model = ArticleModel 
        fields = '__all__'
        
    # Show tags (title) instead of (ID)
    def to_representation(self, instance):
        rep = super(ArticleModelSerializer, self).to_representation(instance)
        rep['tags'] = instance.tags.title
        return rep

    # Show image (path) instead of (ID)
    def to_representation(self, instance):
            rep = super(ArticleModelSerializer, self).to_representation(instance)
            rep['image'] = instance.image.image
            return rep