I have a BaseModel class:
class BaseModel(models.Model):
title = models.CharField(max_length=250, blank=True, null=True)
class Meta:
abstract = True
Then I have mutliple model classes that extend such class eg:
class Article(BaseModel):
slug = models.SlugField(max_length=250, default=timezone.now, unique=True)
My goal is to have a field in a JSON object returned through my webservices to indicate the type of the object (so that the client applications can easily tell an Article from a e-commerce Product). Something like the following:
{
"id": 1,
"object_type: "article",
"title": "some article",
"slug": "some-article"
}
I imagine the there could be a BaseModelSerializer class similar to the following:
class BaseModelSerializer(serializers.ModelSerializer):
object_type = self.__class__.__name__ # ??? how to get the name/ label of the child class?
Then I can have a ArticleSerializer extending the BaseModelSerializer like the following:
class ArticleSerializer(BaseModelSerializer):
class Meta:
model = Article
I would be happy if this could be achieved through modifying the BaseModel class too. Something like the following?
class BaseModel(models.Model):
title = models.CharField(max_length=250, blank=True, null=True)
object_type = self.__class__.__name__ # ??? how to get the name/ label of the child class?
class Meta:
abstract = True
Use SerializerMethodField .
class BaseModelSerializer(serializers.ModelSerializer):
object_type = serializers.SerializerMethodField()
def get_object_type(obj):
return obj.__class__.__name__.lower()
class ArticleSerializer(BaseModelSerializer):
class Meta:
model = Article
fields = ('object_type',)
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