lesson 49

core/urls.py

@@ -21,11 +21,12 @@ from web import views
 
 urlpatterns = [
     path('admin/', admin.site.urls),
-    path('', views.index_view, name='main-page'),
+    path('', views.MainPageRedirectView.as_view()),
+    path('articles/', views.index_view, name='main_page'),
     path('articles/add/', views.ArticleCreateView.as_view(), name='articles-add'),
     # /articles/1/ OR /articles/?id=1
     # article_details_view(request, id)
-    path('articles/<int:id>/', views.article_detail_view, name='articles-detail'),
+    path('articles/<int:id>/', views.ArticleDetailView.as_view(), name='articles-detail'),
     path('articles/<int:id>/edit', views.article_update_view, name='article_update'),
     path('articles/<int:id>/delete', views.delete_article, name='delete_article')
 ] + static(settings.MEDIA_URL, document_root=settings.MEDIA_ROOT)

web/migrations/0006_comment.py

+# Generated by Django 3.2.19 on 2023-07-10 10:25
+
+from django.db import migrations, models
+import django.db.models.deletion
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('web', '0005_alter_article_status'),
+    ]
+
+    operations = [
+        migrations.CreateModel(
+            name='Comment',
+            fields=[
+                ('id', models.BigAutoField(auto_created=True, primary_key=True, serialize=False, verbose_name='ID')),
+                ('text', models.TextField(max_length=400, verbose_name='Текст')),
+                ('author', models.CharField(blank=True, default='Аноним', max_length=40, null=True, verbose_name='Автор')),
+                ('created_at', models.DateTimeField(auto_now_add=True, verbose_name='Время создания')),
+                ('updated_at', models.DateTimeField(auto_now=True, verbose_name='Время обновления')),
+                ('article', models.ForeignKey(on_delete=django.db.models.deletion.CASCADE, related_name='comments', to='web.article', verbose_name='Статья')),
+            ],
+            options={
+                'verbose_name': 'Комментарий',
+                'verbose_name_plural': 'Комментарии',
+            },
+        ),
+    ]

web/migrations/0007_auto_20230710_1741.py

+# Generated by Django 3.2.19 on 2023-07-10 11:41
+
+from django.db import migrations, models
+import django.db.models.deletion
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('web', '0006_comment'),
+    ]
+
+    operations = [
+        migrations.CreateModel(
+            name='Tag',
+            fields=[
+                ('id', models.BigAutoField(auto_created=True, primary_key=True, serialize=False, verbose_name='ID')),
+                ('name', models.CharField(max_length=30, verbose_name='Тег')),
+                ('created_at', models.DateTimeField(auto_now_add=True, verbose_name='Время создания')),
+            ],
+        ),
+        migrations.CreateModel(
+            name='ArticleTag',
+            fields=[
+                ('id', models.BigAutoField(auto_created=True, primary_key=True, serialize=False, verbose_name='ID')),
+                ('article', models.ForeignKey(on_delete=django.db.models.deletion.CASCADE, to='web.article', verbose_name='Статья')),
+                ('tag', models.ForeignKey(on_delete=django.db.models.deletion.CASCADE, related_name='articles', to='web.tag', verbose_name='Тег')),
+            ],
+            options={
+                'db_table': 'article_tag',
+            },
+        ),
+        migrations.AddField(
+            model_name='article',
+            name='tags',
+            field=models.ManyToManyField(blank=True, through='web.ArticleTag', to='web.Tag'),
+        ),
+    ]

web/migrations/0008_rename_tags_article_tags_old.py

+# Generated by Django 3.2.19 on 2023-07-10 12:10
+
+from django.db import migrations
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('web', '0007_auto_20230710_1741'),
+    ]
+
+    operations = [
+        migrations.RenameField(
+            model_name='article',
+            old_name='tags',
+            new_name='tags_old',
+        ),
+    ]

web/migrations/0009_auto_20230710_1813.py

+# Generated by Django 3.2.19 on 2023-07-10 12:13
+
+from django.db import migrations, models
+import django.db.models.deletion
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('web', '0008_rename_tags_article_tags_old'),
+    ]
+
+    operations = [
+        migrations.AddField(
+            model_name='article',
+            name='tags',
+            field=models.ManyToManyField(blank=True, related_name='articles', to='web.Tag'),
+        ),
+        migrations.AlterField(
+            model_name='articletag',
+            name='tag',
+            field=models.ForeignKey(on_delete=django.db.models.deletion.CASCADE, related_name='articles_set', to='web.tag', verbose_name='Тег'),
+        ),
+    ]

web/migrations/0010_auto_20230710_1814.py

+# Generated by Django 3.2.19 on 2023-07-10 12:14
+
+from django.db import migrations
+
+
+def transfer_tags(apps, schema_editor):
+    Article = apps.get_model('web.Article')
+    for article in Article.objects.all():
+        article.tags.set(article.tags_old.all())
+
+
+def rollback_transfer(apps, schema_editor):
+    Article = apps.get_model('web.Article')
+    for article in Article.objects.all():
+        article.tags_old.set(article.tags.all())
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('web', '0009_auto_20230710_1813'),
+    ]
+
+    operations = [
+        migrations.RunPython(transfer_tags, rollback_transfer)
+    ]

web/migrations/0011_auto_20230710_1818.py

+# Generated by Django 3.2.19 on 2023-07-10 12:18
+
+from django.db import migrations
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('web', '0010_auto_20230710_1814'),
+    ]
+
+    operations = [
+        migrations.RemoveField(
+            model_name='article',
+            name='tags_old',
+        ),
+        migrations.DeleteModel(
+            name='ArticleTag',
+        ),
+    ]

web/models/__init__.py

+from web.models.article import Article, StatusChoices
+from web.models.comment import Comment
+from web.models.tag import Tag

web/models.py → web/models/article.py

@@ -18,6 +18,8 @@ class Article(models.Model):
         verbose_name='Заголовок'
     )
 
+    tags = models.ManyToManyField('web.Tag', related_name='articles', blank=True)
+
     # accepted, check, unaccepted
     status = models.CharField(
         max_length=100,

web/models/comment.py

+from django.db import models
+
+
+# article_1 - (comment_1, comment_2)
+# comment_1 = comment_1.article
+# comment_1 = comment_1.article_id
+
+# article_1 = article_1.comment.all()
+
+class Comment(models.Model):
+    # article - object
+    # article_id - id
+    article = models.ForeignKey(
+        'web.Article',
+        on_delete=models.CASCADE,
+        related_name='comments',
+
+        verbose_name='Статья'
+    )
+
+    text = models.TextField(max_length=400, verbose_name='Текст')
+
+    author = models.CharField(
+        max_length=40,
+        null=True,
+        blank=True,
+        default='Аноним',
+        verbose_name='Автор'
+    )
+
+    created_at = models.DateTimeField(
+        auto_now_add=True,
+        verbose_name='Время создания'
+    )
+
+    updated_at = models.DateTimeField(
+        auto_now=True,
+        verbose_name='Время обновления'
+    )
+
+    class Meta:
+        verbose_name = 'Комментарий'
+        verbose_name_plural = 'Комментарии'
+
+    def __str__(self):
+        return f'{self.article.title}: {self.author} | {self.text[:30]}...'

web/models/tag.py

+from django.db import models
+
+
+class Tag(models.Model):
+    name = models.CharField(max_length=30, verbose_name='Тег')
+    created_at = models.DateTimeField(auto_now_add=True, verbose_name='Время создания')
+
+    def __str__(self):
+        return self.name

web/templates/base.html

@@ -13,7 +13,7 @@
 <body>
 <nav class="navbar navbar-expand-lg navbar-light bg-light">
   <div class="container">
-    <a class="navbar-brand" href="{% url 'main-page' %}">Articles</a>
+    <a class="navbar-brand" href="{% url 'main_page' %}">Articles</a>
     <button class="navbar-toggler" type="button" data-bs-toggle="collapse" data-bs-target="#navbarNav" aria-controls="navbarNav" aria-expanded="false" aria-label="Toggle navigation">
       <span class="navbar-toggler-icon"></span>
     </button>

web/views.py

 from django.shortcuts import render, redirect, get_object_or_404
 from django.urls import reverse
-from django.views import View
+from django.views.generic import View, TemplateView, RedirectView
 from web.forms import ArticleForm
 from web.models import Article, StatusChoices
 
@@ -14,6 +14,10 @@ def index_view(request):
     )
 
 
+class MainPageRedirectView(RedirectView):
+    pattern_name = 'main_page'
+
+
 # Class-based views
 class ArticleCreateView(View):
     def get(self, request, *args, **kwargs):
@@ -44,73 +48,19 @@ class ArticleCreateView(View):
             return render(self.request, 'article_create.html', context={'form': form, 'status_choices': StatusChoices.choices})
 
 
-
-        # title = request.POST.get('title')
-        # if not title:
-        #     errors['title'] = 'Title should not be empty!'
-        # elif len(title) > 200:
-        #     errors['title'] = 'Title should be 200 symbols or less'
-
-        # author = request.POST.get('author')
-        # if not author:
-        #     errors['author'] = 'Author should not be empty!'
-        # elif len(author) > 40:
-        #     errors['author'] = 'Author should be 40 symbols or less'
-
-        # text = request.POST.get('text')
-        # if not text:
-        #     errors['text'] = 'Text should not be empty!'
-        # elif len(text) > 3000:
-        #     errors['text'] = 'Text should be 3000 symbols or less'
-        # status = request.POST.get('status')
-        # if not status:
-        #     errors['status'] = 'Status should not be empty!'
-
-        # if len(errors) > 0:
-        #     article_not_saved = Article(title=title, status=status, text=text, author=author)
-        #     return render(self.request,
-        #         'article_create.html',
-        #         context={
-        #             'status_choices': StatusChoices.choices,
-        #             'errors': errors,
-        #             'article': article_not_saved
-        #     })
-
-        article = Article.objects.create(title=title, author=author, status=status, text=text)
-
-        return redirect('articles-detail', id=article.id)
-
-
-# def article_create_view(request):
-#     if request.method == 'GET':
-#         return render(
-#             request,
-#             'article_create.html',
-#             context={
-#                 'status_choices': StatusChoices.choices
-#             }
-#         )
-#
-#     elif request.method == 'POST':
-#         data = request.POST
-#         article_data = {
-#             'title': data.get('title'),
-#             'text': data.get('text'),
-#             'author': data.get('author'),
-#             'status': data.get('status')
-#         }
-#
-#         article = Article.objects.create(**article_data)
-#
-#         return redirect('articles-detail', id=article.id)
-
-
 # /articles/{id}
 def article_detail_view(request, id: int):
     article = get_object_or_404(Article, id=id)
     return render(request, 'article.html', context={'article': article})
 
 
+class ArticleDetailView(TemplateView):
+    template_name = 'article.html'
+
+    def get_context_data(self, **kwargs):
+        article = get_object_or_404(Article, id=kwargs.get('id'))
+        return super().get_context_data(article=article)
+
 def article_update_view(request, id):
     article = get_object_or_404(Article, pk=id)
     if request.method == 'GET':
@@ -132,7 +82,7 @@ def article_update_view(request, id):
             article.save()
             return redirect('articles-detail', id=article.pk)
         else:
-            return render(request, 'update.html', context={'article': article, 'form': form, 'status_choices': StatusChoices.choices}))
+            return render(request, 'update.html', context={'article': article, 'form': form, 'status_choices': StatusChoices.choices})
     
 
 def delete_article(request, id):
@@ -142,4 +92,4 @@ def delete_article(request, id):
 
     elif request.method == 'POST':
         article.delete()
-        return redirect('main-page')
+        return redirect('main_page')