Started working on Module 3.

Module03/mysite/blog/admin.py

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+from django.contrib import admin
+from .models import Post, Comment
+
+@admin.register(Post)
+class PostAdmin(admin.ModelAdmin):
+    list_display = ['title', 'slug', 'author', 'publish', 'status']
+    list_filter = ['status', 'created', 'publish', 'author']
+    search_fields = ['title', 'body']
+    prepopulated_fields = {'slug': ('title',)}
+    raw_id_fields = ['author']
+    date_hierarchy = 'publish'
+    ordering = ['status', 'publish']
+
+@admin.register(Comment)
+class CommentAdmin(admin.ModelAdmin):
+    list_display = ['name', 'email', 'post', 'created', 'active']
+    list_filter = ['active', 'created', 'updated']
+    search_fields = ['name', 'email', 'body']

Module03/mysite/blog/apps.py

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+from django.apps import AppConfig
+
+
+class BlogConfig(AppConfig):
+    default_auto_field = 'django.db.models.BigAutoField'
+    name = 'blog'

Module03/mysite/blog/forms.py

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+from django import forms
+from .models import Comment
+
+class EmailPostForm(forms.Form):
+    name = forms.CharField(max_length=25)
+    email = forms.EmailField()
+    to = forms.EmailField()
+    comments = forms.CharField(required=False, widget=forms.Textarea)
+
+class CommentForm(forms.ModelForm):
+    class Meta:
+        model = Comment
+        fields = ['name', 'email', 'body']

Module03/mysite/blog/migrations/0001_initial.py

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+# Generated by Django 4.2.4 on 2023-08-20 07:26
+
+from django.conf import settings
+from django.db import migrations, models
+import django.db.models.deletion
+import django.utils.timezone
+
+
+class Migration(migrations.Migration):
+
+    initial = True
+
+    dependencies = [
+        migrations.swappable_dependency(settings.AUTH_USER_MODEL),
+    ]
+
+    operations = [
+        migrations.CreateModel(
+            name='Post',
+            fields=[
+                ('id', models.BigAutoField(auto_created=True, primary_key=True, serialize=False, verbose_name='ID')),
+                ('title', models.CharField(max_length=250)),
+                ('slug', models.SlugField(max_length=250)),
+                ('body', models.TextField()),
+                ('publish', models.DateTimeField(default=django.utils.timezone.now)),
+                ('created', models.DateTimeField(auto_now_add=True)),
+                ('updated', models.DateTimeField(auto_now=True)),
+                ('status', models.CharField(choices=[('DF', 'Draft'), ('PB', 'Published')], default='DF', max_length=2)),
+                ('author', models.ForeignKey(on_delete=django.db.models.deletion.CASCADE, related_name='blog_posts', to=settings.AUTH_USER_MODEL)),
+            ],
+            options={
+                'ordering': ['-publish'],
+                'indexes': [models.Index(fields=['-publish'], name='blog_post_publish_bb7600_idx')],
+            },
+        ),
+    ]

Module03/mysite/blog/migrations/0002_alter_post_slug.py

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+# Generated by Django 4.2.4 on 2023-08-20 11:59
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('blog', '0001_initial'),
+    ]
+
+    operations = [
+        migrations.AlterField(
+            model_name='post',
+            name='slug',
+            field=models.SlugField(max_length=250, unique_for_date='publish'),
+        ),
+    ]

Module03/mysite/blog/migrations/0003_comment.py

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+# Generated by Django 4.2.4 on 2023-08-20 12:32
+
+from django.db import migrations, models
+import django.db.models.deletion
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('blog', '0002_alter_post_slug'),
+    ]
+
+    operations = [
+        migrations.CreateModel(
+            name='Comment',
+            fields=[
+                ('id', models.BigAutoField(auto_created=True, primary_key=True, serialize=False, verbose_name='ID')),
+                ('name', models.CharField(max_length=80)),
+                ('email', models.EmailField(max_length=254)),
+                ('body', models.TextField()),
+                ('created', models.DateTimeField(auto_now_add=True)),
+                ('updated', models.DateTimeField(auto_now=True)),
+                ('active', models.BooleanField(default=True)),
+                ('post', models.ForeignKey(on_delete=django.db.models.deletion.CASCADE, related_name='comments', to='blog.post')),
+            ],
+            options={
+                'ordering': ['created'],
+                'indexes': [models.Index(fields=['created'], name='blog_commen_created_0e6ed4_idx')],
+            },
+        ),
+    ]

Module03/mysite/blog/models.py

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+from django.db import models
+from django.utils import timezone
+from django.contrib.auth.models import User
+from django.urls import reverse
+
+class Post(models.Model):
+
+    class Status(models.TextChoices):
+        DRAFT = 'DF', 'Draft'
+        PUBLISHED = 'PB', 'Published'
+
+    title = models.CharField(max_length=250)
+    slug = models.SlugField(max_length=250, unique_for_date='publish')
+    author = models.ForeignKey(User, on_delete=models.CASCADE, related_name='blog_posts')
+    body = models.TextField()
+    publish = models.DateTimeField(default=timezone.now)
+    created = models.DateTimeField(auto_now_add=True)
+    updated = models.DateTimeField(auto_now=True)
+    status = models.CharField(max_length=2, choices=Status.choices, default=Status.DRAFT)
+
+    class Meta:
+        ordering = ['-publish']
+        indexes = [
+            models.Index(fields=['-publish']),
+        ]
+
+    def __str__(self):
+        return self.title
+
+    def get_absolute_url(self):
+        return reverse("blog:post_detail", args=[
+            self.publish.year,
+            self.publish.month,
+            self.publish.day,
+            self.slug,
+        ])
+
+class Comment(models.Model):
+    post = models.ForeignKey(Post, on_delete=models.CASCADE, related_name='comments')
+    name = models.CharField(max_length=80)
+    email = models.EmailField()
+    body = models.TextField()
+    created = models.DateTimeField(auto_now_add=True)
+    updated = models.DateTimeField(auto_now=True)
+    active = models.BooleanField(default=True)
+
+    class Meta:
+        ordering = ['created']
+        indexes = [
+            models.Index(fields=['created']),
+        ]
+    def __str__(self):
+        return f'Comment by {self.name} on {self.post}'

Module03/mysite/blog/static/css/blog.css

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+body { 
+    margin:0;
+    padding:0;
+    font-family:helvetica, sans-serif; 
+}
+
+a { 
+    color:#00abff;
+    text-decoration:none; 
+}
+
+h1 { 
+    font-weight:normal;
+    border-bottom:1px solid #bbb;
+    padding:0 0 10px 0;
+}
+
+h2 {
+    font-weight:normal;
+    margin:30px 0 0;
+}
+
+#content { 
+    float:left;
+    width:60%;
+    padding:0 0 0 30px; 
+}
+
+#sidebar { 
+    float:right;
+    width:30%;
+    padding:10px;
+    background:#efefef; 
+    height:100%;
+}
+
+p.date { 
+    color:#ccc;
+    font-family: georgia, serif;
+    font-size: 12px;
+    font-style: italic; 
+}
+
+/* pagination */
+.pagination { 
+    margin:40px 0; 
+    font-weight:bold;
+}
+
+/* forms */
+label { 
+    float:left;
+    clear:both;
+    color:#333;
+    margin-bottom:4px; 
+}
+input, textarea { 
+    clear:both;
+    float:left;
+    margin:0 0 10px;
+    background:#ededed;
+    border:0;
+    padding:6px 10px;
+    font-size:12px;
+}
+input[type=submit] {
+    font-weight:bold;
+    background:#00abff;
+    color:#fff;
+    padding:10px 20px;
+    font-size:14px;
+    text-transform:uppercase; 
+}
+.errorlist { 
+    color:#cc0033;
+    float:left;
+    clear:both;
+    padding-left:10px; 
+}
+
+/* comments */
+.comment {
+    padding:10px;
+}
+.comment:nth-child(even) {
+    background:#efefef;
+}
+.comment .info {
+    font-weight:bold;
+    font-size:12px;
+    color:#666;
+}

Module03/mysite/blog/templates/blog/base.html

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+{% load static %}
+
+<!DOCTYPE html>
+<html>
+    <head>
+        <title>{% block title %}{% endblock %}</title>
+        <link href="{% static "css/blog.css" %}" rel="stylesheet">
+    </head>
+    <body>
+        <div id="content">
+            {% block content %}
+            {% endblock %}
+        </div>
+        <div id="sidebar">
+            <h2>My blog</h2>
+            <p>This is my blog.</p>
+        </div>
+    </body>
+</html>

Module03/mysite/blog/templates/blog/post/comment.html

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+{% extends "blog/base.html" %}
+{% block title %}Add a comment{% endblock %}
+{% block content %}
+    {% if comment %}
+        <h2>Your comment has been added.</h2>
+        <p><a href="{{ post.get_absolute_url }}">Back to the post</a></p>
+    {% else %}
+        {% include "blog/post/includes/comment_form.html" %}
+    {% endif %}
+{% endblock %}

Module03/mysite/blog/templates/blog/post/detail.html

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+{% extends "blog/base.html" %}
+
+{% block title %}{{ post.title }}{% endblock %}
+
+{% block content %}
+    <h1>{{ post.title }}</h1>
+    <p class="date">
+    Published {{ post.publish }} by {{ post.author }}
+    </p>
+    {{ post.body|linebreaks }}
+    <p>
+        <a href="{% url "blog:post_share" post.id %}">
+            Share this post
+        </a>
+    </p>
+    {% with comments.count as total_comments %}
+        <h2>
+            {{ total_comments }} comment{{ total_comments|pluralize }}
+        </h2>
+    {% endwith %}
+    {% for comment in comments %}
+        <div class="comment">
+            <p class="info">
+                Comment {{ forloop.counter }} by {{ comment.name }}
+                {{ comment.created }}
+            </p>
+            {{ comment.body|linebreaks }}
+        </div>
+    {% empty %}
+        <p>There are no comments.</p>
+    {% endfor %}
+    {% include "blog/post/includes/comment_form.html" %}
+{% endblock %}

Module03/mysite/blog/templates/blog/post/includes/comment_form.html

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+<h2>Add a new comment</h2>
+<form action="{% url "blog:post_comment" post.id %}" method="post">
+    {{ form.as_p }}
+    {% csrf_token %}
+    <p><input type="submit" value="Add comment"></p>
+</form>

Module03/mysite/blog/templates/blog/post/list.html

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+{% extends "blog/base.html" %}
+
+{% block title %}My Blog{% endblock %}
+
+{% block content %}
+    <h1>My Blog</h1>
+    {% for post in posts %}
+        <h2>
+        <a href="{{post.get_absolute_url}}">
+        {{ post.title }}
+        </a>
+        </h2>
+        <p class="date">
+        Published {{ post.publish }} by {{ post.author }}
+        </p>
+        {{ post.body|truncatewords:30|linebreaks }}
+        <hr />
+    {% endfor %}
+    {% include "pagination.html" with page=page_obj %}
+{% endblock %}

Module03/mysite/blog/templates/blog/post/share.html

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+{% extends "blog/base.html" %}
+{% block title %}Share a Post{% endblock %}
+{% block content %}
+    {% if sent %}
+        <h1>E-mail successfully sent</h1>
+        <p>
+            "{{ post.title }}" was successfully sent to {{ form.cleaned_data.to }}.
+        </p>
+    {% else %}
+        <h1>Share "{{ post.title }}" by e-mail</h1>
+        <form method="post">
+            {{ form.as_p }}
+            {% csrf_token %}
+            <input type="submit" value="Send e-mail">
+        </form>
+    {% endif %}
+{% endblock %}