fix: resolved some bugs

widget_group_17/forum/admin.py

 from django.contrib import admin
 from .models import Post
+from .models import Reply
 
 # Register your models here.
 
-admin.site.register(Post)
+admin.site.register(Post)
\ No newline at end of file
+admin.site.register(Reply)
\ No newline at end of file

widget_group_17/forum/migrations/0002_post_author_reply.py

+# Generated by Django 4.0.3 on 2022-03-30 08:34
+
+from django.db import migrations, models
+import django.db.models.deletion
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('homepage', '0003_remove_widgetuser_department_department_department_and_more'),
+        ('forum', '0001_initial'),
+    ]
+
+    operations = [
+        migrations.AddField(
+            model_name='post',
+            name='author',
+            field=models.ForeignKey(null=True, on_delete=django.db.models.deletion.CASCADE, to='homepage.widgetuser'),
+        ),
+        migrations.CreateModel(
+            name='Reply',
+            fields=[
+                ('id', models.BigAutoField(auto_created=True, primary_key=True, serialize=False, verbose_name='ID')),
+                ('reply_body', models.CharField(max_length=1000)),
+                ('pub_date', models.DateTimeField(verbose_name='Replied on')),
+                ('author', models.ForeignKey(null=True, on_delete=django.db.models.deletion.CASCADE, to='homepage.widgetuser')),
+            ],
+        ),
+    ]

widget_group_17/forum/models.py

 from django.db import models
+from homepage.models import WidgetUser
 
 # Create your models here.
 class Post(models.Model):
+    author = models.ForeignKey(WidgetUser, on_delete=models.CASCADE, null=True)
     post_title = models.CharField(max_length=100)
     post_body = models.CharField(max_length=1000)
     pub_date = models.DateTimeField("Date published")
+
+class Reply(models.Model):
+    author = models.ForeignKey(WidgetUser, on_delete=models.CASCADE, null=True)
+    reply_body = models.CharField(max_length=1000)
+    pub_date = models.DateTimeField("Replied on")