django-forloop案例

 场景：当前端遍历对象的时候。根据要求，把第一个div标签和其余的标签区分开。item active  和 item 

        {% for b in banner %}
            {% if forloop.first %}
            <div class="item active">
                <a href="{{ b.link_url }}" title="{{ b.text_info }}">
                    <img src="{% url 'index' %}media/{{ b.img }}"
                         srcset="{% url 'index' %}media/{{ b.img }}"
                         alt="{{ b.text_info }}"/>
{#                <div class="carousel-caption">{{ b.text_info }}</div>#}
                </a>
            </div>
             {% else %}
            <div class="item">
                <a href="{{ b.link_url }}" title="{{ b.text_info }}">
                    <img src="{% url 'index' %}media/{{ b.img }}"
                         srcset="{% url 'index' %}media/{{ b.img }}"
                         alt="{{ b.text_info }}"/>
{#                <div class="carousel-caption">{{ b.text_info }}</div>#}
                </a>
            </div>
            {% endif %}
        {% endfor %}