blog - add category and filter

django/mydjangosite/blog/models.py

@@ -18,10 +18,10 @@ def __str__(self):
 
 class Post(models.Model):
     title = models.CharField('标题', max_length=120)
-    author = models.ForeignKey(User)
+    author = models.ForeignKey(User, verbose_name='作者')
     content = models.TextField('内容')
     po_type = models.ForeignKey(Category, verbose_name='文章分类', blank=True, null=True)
-    pub_date = models.DateTimeField(auto_now_add=True)
+    pub_date = models.DateTimeField('发布日期', auto_now_add=True)
 
     class Meta:
         verbose_name = '文章'

django/mydjangosite/blog/templates/blog/_side.html

@@ -11,7 +11,7 @@ <h3>文章分类</h3>
         {% if categories %}
         <ul class="list-unstyled">
             {% for c in categories %}
-                <li>- {{ c.name | safe }}</li>
+                <li>- <a href="{% url 'blog:category' c.pk %}">{{ c.name | safe }}</a></li>
             {% endfor %}
         </ul>
         {% endif %}

django/mydjangosite/blog/templates/blog/index.html

@@ -3,6 +3,12 @@
 {% block title %}首页－{% endblock %}
 
 {% block content %}
+    {% if is_category %}
+        <div class="well well-sm">
+            "{{ cat_name | safe }}"分类中共有<span class="label label-info">{{ posts | length }}</span>篇
+        </div>
+    {% endif %}
+
 {% for post in posts %}
 {% include 'blog/_post.html' %}
 {% endfor %}

django/mydjangosite/blog/urls.py

@@ -7,4 +7,5 @@
 urlpatterns = patterns('',
                 url(r'^$', views.index, name='index'),
                 url(r'^post/(?P<pk>\d+)/$', views.post, name='post'),
+                url(r'^category/(?P<pk>\d+)/$', views.category, name='category')
                 )

django/mydjangosite/blog/views.py

@@ -16,3 +16,11 @@ def post(request, pk):
     categories = Category.objects.all()
     return render(request, 'blog/post.html', {'post': post, 'categories': categories})
 
+
+def category(request, pk):
+    """文章分类"""
+    cat = get_object_or_404(Category, pk=pk)
+    posts = cat.post_set.all()
+    return render(request, 'blog/index.html', {'posts': posts, 'categories': Category.objects.all(),
+                                               'is_category': True, 'cat_name': cat.name})
+