{％cycle％}用于嵌套for循环？ [英] {% cycle %} work around for nested for loops?

问题描述

我在Django {％cycle％} 模板标签中遇到了一个有趣的监督。这已被列为错误，但我想知道是否有解决方法？

  {range for range_0_2％}中的r1％
 {range for range_0_3％中的r2％} 
 { r1}}  -  {{r2}}  -  {{cycle'even''odd'}} 
 {％endfor％} 
 {％endfor％} 
  

这将产生：

  0-0-even 
 0-1-odd 
 0-2-even 
 1-0-odd 
 1-1-even 
 1-2-odd 
  

应该得到：

  0-0-even 
 0-1-odd 
 0-2-even 
 1-0-even 
 1-1-odd 
 1-2 -even 
  

解决方案

我注意到我的模板中有同样的问题。

您可以使用以下解决方法：

  {％如果forloop.counter | divisibleby：2％}甚至{％else％} odd {％endif％} 
  

I ran into an interesting "oversight" in the Django {% cycle %} template tag. This has been listed as a bug, but I'm wondering if there is a workaround for it?

{% for r1 in range_0_2 %}
  {% for r2 in range_0_3 %}
   {{ r1 }}-{{ r2 }}-{{ cycle 'even' 'odd' }}
  {% endfor %}
{% endfor %}

This yields:

0-0-even
0-1-odd
0-2-even
1-0-odd
1-1-even
1-2-odd

It should yield:

0-0-even
0-1-odd
0-2-even
1-0-even
1-1-odd
1-2-even

解决方案

I have noticed the same problem in my templates.

You can use a workaround like the following:

{% if forloop.counter|divisibleby:2 %}even{% else %}odd{% endif %}

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