Commmit

articles/forms.py

+from django.core.exceptions import ValidationError
 from django.forms.models import ModelForm
+from django.forms import CharField
+
 from articles.models import Article, Author, Comment
 
 
+def at_least_10(string):
+    if len(string) < 10:
+        raise ValidationError("Имя слишком короткое")
+
+
 class AuthorForm(ModelForm):
+    name = CharField(max_length=200, required=True, label='Имя автора', validators=(at_least_10,))
+
     class Meta:
         model = Author
         fields = ("name",)
@@ -12,3 +22,24 @@ class CommentForm(ModelForm):
     class Meta:
         model = Comment
         fields = ("text", "author")
+
+
+class ArticleForm(ModelForm):
+    body = CharField(max_length=200, required=True, label='Текст', validators=(at_least_10,))
+
+    def clean(self):
+        cleaned_data = super().clean()
+        print(cleaned_data)
+        if cleaned_data['body'] == cleaned_data['title']:
+            raise ValidationError('Текст в названии и теле статьи совпадает')
+        return cleaned_data
+
+    def clean_author(self):
+        author = self.cleaned_data.get('author')
+        if author.id == 1:
+            raise ValidationError(f"У автора {author} слишком много статей!")
+        return author
+
+    class Meta:
+        model = Article
+        fields = "__all__"

articles/helpers/views.py

+from django.shortcuts import render, redirect
+from django.views import View
+
+
+class CustomFormView(View):
+    form_class = None
+    template_name = None
+    redirect_url = ''
+
+    def get(self, request, *args, **kwargs):
+        form = self.form_class()
+        context = self.get_context_data(form=form)
+        return render(request, self.template_name, context=context)
+
+    def post(self, request, *args, **kwargs):
+        form = self.form_class(data=request.POST)
+        if form.is_valid():
+            return self.form_valid(form)
+        return self.form_invalid(form)
+
+    def form_valid(self, form):
+        return redirect(self.get_redirect_url())
+
+    def form_invalid(self, form):
+        context = self.get_context_data(form=form)
+        return render(self.request, self.template_name, context=context)
+
+    def get_redirect_url(self):
+        return self.redirect_url
+
+    def get_context_data(self, **kwargs):
+        return kwargs

articles/migrations/0012_articletag.py

+# Generated by Django 3.2.6 on 2021-08-16 11:17
+
+from django.db import migrations, models
+import django.db.models.deletion
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('articles', '0011_auto_20210812_1522'),
+    ]
+
+    operations = [
+        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, related_name='article_tags', to='articles.article', verbose_name='Статья')),
+                ('tag', models.ForeignKey(on_delete=django.db.models.deletion.CASCADE, related_name='tag_articles', to='articles.tag', verbose_name='Тег')),
+            ],
+        ),
+    ]

articles/migrations/0013_article_number.py

+# Generated by Django 3.2.6 on 2021-08-19 14:06
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('articles', '0012_articletag'),
+    ]
+
+    operations = [
+        migrations.AddField(
+            model_name='article',
+            name='number',
+            field=models.IntegerField(default=4),
+        ),
+    ]

articles/migrations/0014_auto_20210819_1433.py

+# Generated by Django 3.2.6 on 2021-08-19 14:33
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('articles', '0013_article_number'),
+    ]
+
+    operations = [
+        migrations.RemoveField(
+            model_name='article',
+            name='number',
+        ),
+        migrations.AddField(
+            model_name='article',
+            name='created_at',
+            field=models.DateTimeField(auto_now_add=True, null=True),
+        ),
+    ]

articles/migrations/0015_alter_article_created_at.py

+# Generated by Django 3.2.6 on 2021-08-19 14:37
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('articles', '0014_auto_20210819_1433'),
+    ]
+
+    operations = [
+        migrations.AlterField(
+            model_name='article',
+            name='created_at',
+            field=models.DateTimeField(auto_now_add=True),
+        ),
+    ]

articles/models.py

 from django.db import models
-
+from datetime import datetime
 
 class Author(models.Model):
     name = models.CharField(max_length=50, null=False, verbose_name="Автор")
@@ -11,23 +11,21 @@ class Author(models.Model):
 class Article(models.Model):
     title = models.CharField(max_length=250, null=False)
     body = models.CharField(max_length=2000, null=True)
+    created_at = models.DateTimeField(auto_now_add=True, null=False)
+
     author = models.ForeignKey(
         "articles.Author",
         on_delete=models.SET_NULL,
         null=True, related_name='articles')
-    tags_old = models.ManyToManyField(
-        'articles.Tag',
-        related_name="articles_old",
-        through='articles.ArticleTag',
-        through_fields=('article', 'tag'),
-        blank=True
-    )
     tags = models.ManyToManyField(
         'articles.Tag',
-        related_name="articles",
+        related_name='articles',
         blank=True
     )
 
+    def __str__(self):
+        return f"{self.id}. {self.title[:20]}"
+
 
 class Comment(models.Model):
     article = models.ForeignKey(
@@ -69,3 +67,4 @@ class ArticleTag(models.Model):
 
     def __str__(self):
         return f"{self.article} | {self.tag}"
+

articles/templates/articles/article_list.html

@@ -20,6 +20,7 @@
             {% endfor %}
           </tbody>
         </table>
+        <a href="{% url 'article_create' %}">Создать статью</a>
         <a href="{% url 'author_create' %}">Создать автора</a>
     </div>
 {% endblock %}
\ No newline at end of file

articles/templates/articles/create.html

+{% extends 'base.html' %}
+
+{% block content %}
+<form action="{% url 'article_create' %}" method="POST">
+    {% csrf_token %}
+    {{ form.as_p }}
+    <input type="submit" value="create">
+</form>
+
+{% endblock %}
\ No newline at end of file

articles/templates/articles/detail.html

@@ -26,6 +26,7 @@
                        class="btn btn-success"
                        value="Оставить комментарий">
             </form>
+            <a href="{% url 'article_update' article.pk %}">Изменить статью</a>
         </div>
     </div>
 

articles/templates/articles/update.html

+{% extends 'base.html' %}
+
+{% block content %}
+<form action="{% url 'article_update' article.pk %}" method="POST">
+    {% csrf_token %}
+    {{ form.as_p }}
+    <input type="submit" value="create">
+</form>
+
+{% endblock %}
\ No newline at end of file

articles/templates/partial/navbar.html

 <nav class="navbar navbar-expand-lg navbar-dark bg-dark">
   <div class="container">
-    <a class="navbar-brand" href="#">Navbar</a>
+    <a class="navbar-brand" href="{% url 'article_list' %}">Navbar</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>

articles/urls.py

@@ -2,7 +2,7 @@ from django.urls import path
 from .views import (
     article_list_view,
     ArticleDetailView, CommentView,
-    author_list_view, author_edit_view, author_delete_view, AuthorView
+    author_list_view, author_edit_view, author_delete_view, AuthorView, CreateArticleView, ArticleUpdateView
 )
 
 urlpatterns = [
@@ -21,7 +21,16 @@ urlpatterns = [
         CommentView.as_view(),
         name="add_comment"
     ),
-
+    path(
+        'article/create/',
+        CreateArticleView.as_view(),
+        name='article_create'
+    ),
+    path(
+        'article/<int:pk>/update',
+        ArticleUpdateView.as_view(),
+        name='article_update'
+    ),
     path(
         'create/',
         AuthorView.as_view(),

articles/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 FormView
 
+from .helpers.views import CustomFormView
 from articles.models import Article, Author
-from .forms import AuthorForm, CommentForm
+from .forms import AuthorForm, CommentForm, ArticleForm
 
 
 def article_list_view(request):
@@ -25,6 +28,62 @@ def author_list_view(request):
         )
 
 
+class CreateArticleView(CustomFormView):
+    template_name = 'articles/create.html'
+    form_class = ArticleForm
+
+    def form_valid(self, form):
+        data = {}
+        tags = form.cleaned_data.pop('tags')
+        for key, value in form.cleaned_data.items():
+            if value is not None:
+                data[key] = value
+
+        self.article = Article.objects.create(**data)
+        self.article.tags.set(tags)
+
+        return super().form_valid(form)
+
+    def get_redirect_url(self):
+        return reverse('article_list')
+
+
+class ArticleUpdateView(FormView):
+    template_name = "articles/update.html"
+    form_class = ArticleForm
+
+    def dispatch(self, request, *args, **kwargs):
+        self.article = self.get_object()
+        return super().dispatch(request, *args, **kwargs)
+
+    def get_context_data(self, **kwargs):
+        context = super().get_context_data(**kwargs)
+        context['article'] = self.article
+        return context
+
+    def get_initial(self):
+        initial = {}
+        for key in 'title', 'body', 'author', 'tags':
+            initial[key] = getattr(self.article, key)
+        initial['tags'] = self.article.tags.all()
+        return initial
+
+    def form_valid(self, form):
+        tags = form.cleaned_data.pop('tags')
+        for key, value in form.cleaned_data.items():
+            if value is not None:
+                setattr(self.article, key, value)
+        self.article.save()
+        self.article.tags.set(tags)
+        return super().form_valid(form=form)
+
+    def get_success_url(self):
+        return reverse('article_detail', kwargs={'pk': self.article.pk})
+
+    def get_object(self):
+        pk = self.kwargs.get('pk')
+        return get_object_or_404(Article, pk=pk)
+
 class AuthorView(View):
     url_pattern = 'authors/author_create.html'