如何在django模板中循環2個forloops

Question

我有一個django模板，我需要在兩個不同的for循環中遍歷一組背景顏色。循環標籤似乎被設計爲在一個for循環內或一個for循環外使用。這是我的代碼：

{% if global_adverts %} 
     <span style="display:none">{% cycle 'advert-grey' 'advert-pale-blue' 'advert-green' 'advert-blue' as adcolors %}</span> 
     {% for advert in global_adverts %} 
      <div class="{% cycle adcolors %}"> 
       {% if advert.url %}<a href="{{ advert.url }}">{% endif %} 
        <p>{{ advert.text }}</p> 
       {% if advert.url %}</a>{% endif %} 
      </div> 
     {% endfor %} 
    {% endif %} 
    {% with self.adverts.all as adverts %} 
     {% if adverts %} 
      {% for advert in adverts %} 
       <div class="{% cycle adcolors %}"> 
        {% if advert.url %}<a href="{{ advert.url }}">{% endif %} 
         <p>{{ advert.text }}</p> 
        {% if advert.url %}</a>{% endif %} 
       </div> 
      {% endfor %} 
     {% endif %} 
    {% endwith %} 

有沒有辦法做到這一點，而不在循環輸出第一項第一循環之前，並且具有與CSS來隱藏它？

Answer 1

我發現下面的代碼給出了期望的結果：

{% if global_adverts %} 
     {% for advert in global_adverts %} 
      <div class="{% cycle 'advert-grey' 'advert-pale-blue' 'advert-green' 'advert-blue' as adcolours %}"> 
       {% if advert.url %}<a href="{{ advert.url }}">{% endif %} 
        <p>{{ advert.text }}</p> 
       {% if advert.url %}</a>{% endif %} 
      </div> 
     {% endfor %} 
    {% endif %} 
    {% with self.adverts.all as adverts %} 
     {% if adverts %} 
      {% for advert in adverts %} 
       <div class="{% cycle adcolours %}"> 
        {% if advert.url %}<a href="{{ advert.url }}">{% endif %} 
         <p>{{ advert.text }}</p> 
        {% if advert.url %}</a>{% endif %} 
       </div> 
      {% endfor %} 
     {% endif %} 
    {% endwith %} 

Answer 2

只需添加沉默

{% cycle 'advert-grey' 'advert-pale-blue' 'advert-green' 'advert-blue' as adcolors silent %} 

它可以防止標籤從輸出值

編輯時，COMMENT

如果需要的週期繼續爲每個循環只需使用週期兩次，並在第二個週期中更改物品的順序：

{% if global_adverts %} 
     {% for advert in global_adverts %} 
      <div class="{% cycle 'advert-grey' 'advert-pale-blue' 'advert-green' 'advert-blue' %}"> 
       {% if advert.url %}<a href="{{ advert.url }}">{% endif %} 
        <p>{{ advert.text }}</p> 
       {% if advert.url %}</a>{% endif %} 
      </div> 
     {% endfor %} 
    {% endif %} 
    {% with self.adverts.all as adverts %} 
     {% if adverts %} 
      {% for advert in adverts %} 
       <div class="{% cycle 'advert-pale-blue' 'advert-green' 'advert-blue' 'advert-grey' %}"> 
        {% if advert.url %}<a href="{{ advert.url }}">{% endif %} 
         <p>{{ advert.text }}</p> 
        {% if advert.url %}</a>{% endif %} 
       </div> 
      {% endfor %} 
     {% endif %} 
    {% endwith %}