17👍
✅
You can point the source
attribute of PictureSerializer
to a method on province that returns only 3 related pics:
class ProToPicturesSerial(serializers.ModelSerializer):
pro_pictures = PictureSerializer(many=True, source='first_three_pics')
class Meta:
model = Province
fields = ('id', 'name', 'intro', 'description', 'pro_pictures')
and
class Province(models.Model):
name = models.CharField(max_length=50)
intro = models.CharField(max_length=1000, null=True, blank=True)
description = models.TextField(max_length=10000, null=True, blank=True)
def first_three_pics(self):
return self.picture_set.all()[:3]
Source:stackexchange.com