ItPeoplePython2018 · AleksandrTsimbulov · Jul 25, 2018 · Jul 25, 2018
diff --git a/homework/app/migrations/0001_initial.py b/homework/app/migrations/0001_initial.py
@@ -0,0 +1,32 @@
+# Generated by Django 2.0.7 on 2018-07-25 10:06
+
+from django.db import migrations, models
+import django.db.models.deletion
+
+
+class Migration(migrations.Migration):
+
+    initial = True
+
+    dependencies = [
+    ]
+
+    operations = [
+        migrations.CreateModel(
+            name='Category',
+            fields=[
+                ('id', models.AutoField(auto_created=True, primary_key=True, serialize=False, verbose_name='ID')),
+                ('title', models.CharField(max_length=100)),
+                ('popularity', models.PositiveSmallIntegerField(default=0)),
+            ],
+        ),
+        migrations.CreateModel(
+            name='Page',
+            fields=[
+                ('id', models.AutoField(auto_created=True, primary_key=True, serialize=False, verbose_name='ID')),
+                ('title', models.CharField(max_length=100)),
+                ('text', models.TextField()),
+                ('category', models.ForeignKey(on_delete=django.db.models.deletion.CASCADE, related_name='pages', to='app.Category')),
+            ],
+        ),
+    ]
diff --git a/homework/app/migrations/0002_auto_20180725_1154.py b/homework/app/migrations/0002_auto_20180725_1154.py
@@ -0,0 +1,19 @@
+# Generated by Django 2.0.7 on 2018-07-25 11:54
+
+from django.db import migrations, models
+import django.db.models.deletion
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('app', '0001_initial'),
+    ]
+
+    operations = [
+        migrations.AlterField(
+            model_name='page',
+            name='category',
+            field=models.ForeignKey(null=True, on_delete=django.db.models.deletion.CASCADE, related_name='pages', to='app.Category'),
+        ),
+    ]
diff --git a/homework/app/models.py b/homework/app/models.py
@@ -8,7 +8,11 @@ class Category(models.Model):
     title      - название категории
     popularity - популярность категории, измеряется в положительных целых числах, по умолчанию 0
     """
-    pass
+    title = models.CharField(max_length=100)
+    popularity = models.PositiveSmallIntegerField(default=0)
+
+    def __str__(self):
+        return f"Category {self.title}, category's popularity is {self.popularity}"
 
 
 class Page(models.Model):
@@ -19,4 +23,9 @@ class Page(models.Model):
     text     - тест страницы
     category - необязательная категория (при удалении категории должны удалятся все её страницы)
     """
-    pass
+    title = models.CharField(max_length=100)
+    text = models.TextField()
+    category = models.ForeignKey('Category', null=True, related_name='pages', on_delete=models.CASCADE)
+
+    def __str__(self):
+        return f'Page {self.title} related to {self.category}'
diff --git a/homework/app/templates/base.html b/homework/app/templates/base.html
@@ -0,0 +1,10 @@
+<!DOCTYPE html>
+<html lang="en">
+<head>
+    <meta charset="UTF-8">
+    <title>{{ page_title }}</title>
+</head>
+<body>
+    {% block content %}{% endblock %}
+</body>
+</html>
diff --git a/homework/app/templates/category.html b/homework/app/templates/category.html
@@ -0,0 +1,9 @@
+{% extends 'base.html' %}
+
+{% block content %}
+    <ul>
+    {% for page in category_pages %}
+        <li>{{ page.title }}</li>
+    {% endfor %}
+    </ul>
+{% endblock %}
diff --git a/homework/app/templates/page.html b/homework/app/templates/page.html
@@ -0,0 +1,5 @@
+{% extends 'base.html' %}
+
+{% block content %}
+    {{ text }}
+{% endblock %}
diff --git a/homework/app/templates/pages.html b/homework/app/templates/pages.html
@@ -0,0 +1,9 @@
+{% extends 'base.html' %}
+
+{% block content %}
+    <ul>
+    {% for title in titles %}
+        <li>{{ title.title }}</li>
+    {% endfor %}
+    </ul>
+{% endblock %}
diff --git a/homework/app/templates/unknown_category.html b/homework/app/templates/unknown_category.html
@@ -0,0 +1,9 @@
+{% extends 'base.html' %}
+
+{% block content %}
+    <ul>
+    {% for page in pages %}
+        <li>{{ page.title }}</li>
+    {% endfor %}
+    </ul>
+{% endblock %}
diff --git a/homework/app/views.py b/homework/app/views.py
@@ -1 +1,45 @@
+from django.shortcuts import render
+from homework.app.models import Category, Page
+from django.db.models import Q
 
+
+def show_page(request, id=1):
+    page = Page.objects.get(id=id)
+    return render(request, 'page.html', {
+        'page_title': page.title,
+        'text': page.text,
+    })
+
+
+def show_pages(request):
+    titles = Page.objects.values('title').order_by('-title')
+    page_title = 'Pages'
+    return render(request, 'pages.html', {
+        'page_title': page_title,
+        'titles': titles,
+    })
+
+
+def show_category(request, id):
+    category = Category.objects.get(id=id)
+    category_title = category.title
+    category_pages = category.pages.order_by('title')
+    return render(request, 'category.html', {
+        'page_title': category_title,
+        'category_pages': category_pages,
+    })
+
+
+def show_unknown_category(request):
+    pages = Page.objects.filter(category__isnull=True).order_by('title')
+    page_title = 'unknown category'
+    return render(request, 'unknown_category.html', {
+        'page_title': page_title,
+        'pages': pages,
+    })
+
+
+def get_queryset_result(min_pop, max_pop):
+    category_ids_between_max_and_min = Category.objects.values('id').filter(Q(popularity__gt=max_pop)
+                                                                            | Q(popularity__lt=min_pop))
+    return [item['id'] for item in category_ids_between_max_and_min]
diff --git a/homework/urls.py b/homework/urls.py
@@ -1,6 +1,14 @@
 from django.contrib import admin
 from django.urls import path
+from homework.app.views import show_page, show_pages, show_category, show_unknown_category
+
 
 urlpatterns = [
     path('admin/', admin.site.urls),
+
+    path('', show_page),
+    path('<int:id>/', show_page),
+    path('pages/', show_pages),
+    path('category/<int:id>', show_category),
+    path('category/unknown', show_unknown_category),
 ]