title: what's the new syntax of url redirection in a label
body: <p>My version of django is 1.6.3</p>
  
  <p>and i learn django start with a project which have a part like this </p>
  
  <pre><code>    #blog_list.html
      &lt;h3&gt;&lt;a href="{% url detailblog blog.id %}"&gt;{{ blog.caption }}&lt;/a&gt;&lt;/h3&gt;
      #urls.py
      url(r'^blog/(?P&lt;id&gt;\d+)/$', 'blog_show', name='detailblog'),
  </code></pre>
  
  <p>the process is when i click the one item of the list that blog_list shows to me, it will bring me to blog_show via the a label.</p>
  
  <p>But i got the error message that says:</p>
  
  <pre><code>'url' requires a non-empty first argument. The syntax changed in Django 1.5, see the docs.
  </code></pre>
  
  <p>I don't know where the location of this answer in the docs. </p>
  
  <p>So help me, tell me the solution of this and the right way to check docs if i come to the same situation like this or worse. Thank you!</p>