Django循环 - 删除最后一个逗号

Question

我设置了以下循环，但是需要删除最后一项的逗号（它是为了循环2复制JSON数组）

{% for product_in_series in series.get_products %}{%spaceless%}
    {% with product_in_series.product as product %}
    {%if not forloop.first%}
            "<img src='{% version product.get_overview 'page_image' %}'>",
    {%endif%}
    {% endwith %}
{%endspaceless%}{% endfor %}

干杯， [R

Answer 1

这个怎么样？

{% for product_in_series in series.get_products %}{%spaceless%}
    {% with product_in_series.product as product %}
    {%if not forloop.first%}
        "<img src='{% version product.get_overview 'page_image' %}'>"
        {%if not forloop.last%},{%endif%}
    {%endif%}
    {% endwith %}
{%endspaceless%}{% endfor %}

Answer 2

{{ forloop.last|yesno:",,"|safe }}

, - 是一个逗号

Answer 3

以上都不适合我。 像Django 3.0一样，正确的语法也是如此

 {% with querythisandthat as A %}
   {% for  u in A %}  {{ u.interesting_stuff }} 
      {% if u == A.last %} . {% else %} ; {% endif %}
   {% endfor %}
 {% endwith %}

原因是A.last不是True / False，但它是查询集的最后一个元素

https://docs.djangoproject.com/en/3.0/ref/models/querysets/#django.db.models.query.QuerySet.first