Django Rest Framework Not Null Constraint - django

Question

When i try to create a new by post by posting the following Json:
{
"title": "This is serialzer title",
"content": "This is serialzer content",
}
I get the following error:
NOT NULL constraint failed: blog_post.views
Models.py
from django.db import models
from django.contrib.auth.models import User
from django.utils.timezone import now
# Create your models here.
class Post(models.Model):
sno = models.AutoField(primary_key=True)
title = models.CharField(max_length=255)
content = models.TextField()
author = models.ForeignKey(User, on_delete=models.CASCADE, blank=True, null=True)
views = models.IntegerField()
slug = models.CharField(max_length=100)
timeStamp = models.DateTimeField(default=now)
def __str__(self):
# return self.title + ' by ' + self.author
return self.title + ' by ' + self.author.username
class BlogComment(models.Model):
sno = models.AutoField(primary_key=True)
comment = models.TextField()
user = models.ForeignKey(User, on_delete=models.CASCADE)
post = models.ForeignKey(Post, on_delete=models.CASCADE)
parent = models.ForeignKey('self', on_delete=models.CASCADE, null=True)
timeStamp = models.DateTimeField(default=now)
def __str__(self):
return self.comment[0:13] + "..." + " by " + self.user.username
views.py
#api_view(['POST'])
def api_create_blog_view(request):
user = User.objects.get(pk=1)
blog_post = Post(author=user)
if request.method == "POST":
serializer = PostSerializer(blog_post, data=request.data)
if serializer.is_valid():
serializer.save()
return Response(serializer.data, status=status.HTTP_201_CREATED)
return Response(serializer.errors, status=status.HTTP_400_BAD_REQUEST)
serializer.py
from blog.models import Post
from rest_framework import serializers
class PostSerializer(serializers.ModelSerializer):
class Meta:
model = Post
fields = ['title', 'content']
I don't know how to solve this please help me to solve this error.DB has already been cleared. Locations have been created by using the admin interface. I know that the issue is something trivial, but I just can't get it to work.

Answer 1

You need to set a value for the views. You can do so by specifying a default value:
from django.conf import settings
class Post(models.Model):
sno = models.AutoField(primary_key=True)
title = models.CharField(max_length=255)
content = models.TextField()
author = models.ForeignKey(
settings.AUTH_USER_MODEL,
on_delete=models.CASCADE,
blank=True,
null=True
)
views = models.IntegerField(default=0)
slug = models.CharField(max_length=100)
timeStamp = models.DateTimeField(auto_now_add=True)
def __str__(self):
return self.title + ' by ' + self.author.username
Note: It is normally better to make use of the settings.AUTH_USER_MODEL [Django-doc] to refer to the user model, than to use the User model [Django-doc] directly. For more information you can see the referencing the User model section of the documentation.
Note: According to the PEP-8 Style Guide, the classes should be written in PerlCase, and the fields in snake_case.