Symfony2，如何跳过树枝模板中循环中重复打印的值？

Question

I have a table in this loop:

{% for key, value in boxes %}
     <tr>
        <td>{{ value.boxnum }}</td>
        <td>{{ value.code }}</td>
        <td>{{ value.total }}</td>
        <td>{{ value.qty }}</td>
     </tr>
{% endfor %}

Which gives a table of:

  Box       Code   Total   Qty  
3096362    130291   27     216  
3096362    140001   18     144  
3096362    140003    4      32  
3096362    140013   14     112  

How can I get the Box # column to only print once since the rest are just repeats?

Answer 1

This is what you can do

{% set bnum = '' %}
{% for key, value in boxes %}
 <tr>
    {% if bnum != value.boxnum %}
      {% set bnum = value.boxnum  %}
      <td>{{ value.boxnum }}</td>
    {% else %}
      <td></td>
    {% endif %}
    <td>{{ value.code }}</td>
    <td>{{ value.total }}</td>
    <td>{{ value.qty }}</td>
 </tr>
{% endfor %}