How to fix django admin "add" button - django

Question

I'm new to web development, and i'm building a blog web app in Django.
I'm having problems adding new posts through django-admin. Clicking the "add" button gives me an "Error during template rendering - 'str' object has no attribute 'utcoffset'" error message.
models.py
from django.db import models
from django.utils import timezone
import datetime
# Create your models here.
class Post(models.Model):
title = models.CharField(max_length=50)
content = models.TextField(blank=True, null=True)
post_date = models.DateTimeField(default='date posted')
def published_recently(self):
now = timezone.now()
return now - datetime.timedelta(days=1) <= self.post_date <= now
published_recently.admin_order_field = 'post_date'
published_recently.boolean = True
published_recently.short_description = 'Recent post?'
def __str__(self):
return self.title
class Customer(models.Model):
username = models.CharField(max_length=50)
firstname = models.CharField(max_length=50)
lastname = models.CharField(max_length=50)
email = models.CharField(max_length=50)
country = models.CharField(max_length=50)
reg_date = models.DateTimeField(default='date reg')
def __str__(self):
return self.username
class Comment(models.Model):
comment_cont = models.TextField(max_length=200)
user_name = models.ForeignKey(Customer, default=0, on_delete=models.CASCADE)
comment_post = models.ForeignKey(Post, on_delete=models.CASCADE)
votes = models.BigIntegerField(default=0)
comment_date = models.DateTimeField(default='date commented')
def __str__(self):
return self.comment_cont
class Feedback(models.Model):
feedback_title = models.CharField(max_length=50)
feedback_detail = models.CharField(max_length=200)
user_name = models.ForeignKey(Customer, default=1, verbose_name='user_name', on_delete=models.SET_DEFAULT)
admin.py
from django.contrib import admin
from .models import Post, Customer, Feedback, Comment
# Register your models here.
class CommentInLine(admin.TabularInline):
model = Comment
extra = 1
fields = ['comment_cont', 'votes', 'comment_date']
class CustomerAdmin(admin.ModelAdmin):
fieldsets = [
(None, {'fields': ['firstname', 'lastname', 'username', 'email', 'country', 'reg_date']})
]
class PostAdmin(admin.ModelAdmin):
fieldsets = [
('Post', {'fields': ['title', 'content']}),
('Date information', {'fields': ['post_date'], 'classes':['collapse']}),
]
inlines = [CommentInLine]
list_display = ('title', 'content', 'post_date', 'published_recently')
list_filter = ['post_date']
search_fields = ['title']
class FeedbackAdmin(admin.ModelAdmin):
fieldsets = [
('Feedback', {'fields': ['feedback_title', 'feedback_detail', 'user_name']}),
]
list_display = ('user_name', 'feedback_title', 'feedback_detail')
# inlines = [CustomerInLine]
# list_display = ('user_name', 'feedback_title', 'feedback_detail')
class CommentAdmin(admin.ModelAdmin):
fields = ['user_name', 'comment_post', 'comment_cont', 'votes', 'comment_date']
admin.site.register(Post, PostAdmin)
admin.site.register(Feedback, FeedbackAdmin)
admin.site.register(Customer, CustomerAdmin)
admin.site.register(Comment, CommentAdmin)
I want to be able to add posts through Django admin. Any other corrections to the code is highly welcome. I appreciate the help. Thanks.

Answer 1

post_date = models.DateTimeField(default='date posted')
the post_date is DateTimeField and you have provided a string as default . It should be an instance of datetime.datetime.
post_date = models.DateTimeField(default=timezone.now)
# or
post_date = models.DateTimeField(auto_now_add=True, verbose_name='Publish Time')
should fix the problem