I am getting Integrity error in django rest framework - django

Question

I am begginer in django. I would like to add some posts and comments but I am getting an Integrity error.
Without comments model it was working before but it doesn´t work together. I already delete my database and makemigrations and migrate again.
post models
from django.db import models
from django.conf import settings
# from django.contrib.auth import get_user_model
# User = get_user_model()
# Create your models here.
class Post(models.Model):
user = models.ForeignKey(
#to=User,
to=settings.AUTH_USER_MODEL,
on_delete=models.CASCADE,
related_name='posts',
null=True
)
content = models.CharField(
max_length=150,
blank=False
)
created = models.DateTimeField(
auto_now=True
)
liked_by = models.ManyToManyField(
#to=User,
to=settings.AUTH_USER_MODEL,
related_name='liked_posts',
blank=True
)
post serializer
from rest_framework import serializers
from .models import Post
from ..comment.serializers import CommentSerializer
class PostSerializer(serializers.ModelSerializer):
class Meta:
model = Post
comments = CommentSerializer(source='comments.content')
fields = [
'id',
'user',
'content',
'comments',
'created',
'liked_by',
]
comment.models
from django.db import models
from django.conf import settings
from apps.post.models import Post
# Create your models here.
class Comment(models.Model):
user = models.ForeignKey(to=settings.AUTH_USER_MODEL, on_delete=models.CASCADE, related_name='comment', null=True)
post = models.ForeignKey(to=Post, on_delete=models.SET_NULL, related_name='comment', null=True)
content = models.CharField(max_length=150)
created = models.DateTimeField(auto_now_add=True)
def __str__(self):
return f'Comment by: {self.user}'
comment serializer
from rest_framework import serializers
from .models import Comment
class CommentSerializer(serializers.ModelSerializer):
class Meta:
model = Comment
fields = ['id', 'user', 'post', 'content', 'created']

Answer 1

you need to pass the CommentSerializer field in PostSerializer Meta class properly.
from rest_framework import serializers
from .models import Post
from .comment.serializers import CommentSerializer
class PostSerializer(serializers.ModelSerializer):
comments = CommentSerializer(many=True)
class Meta:
model = Post
fields = [
'id',
'user',
'content',
'comments',
'created',
'liked_by',
'comments',
]