液体模板：for 循环中的偶数/奇数项

发布于 2024-12-28 22:57:36 字数 314 浏览 4 评论 0 原文

如果我在 Liquid 中有一个 for 循环（使用 Jekyll），我如何才能只定位偶数（或奇数）项？我已经尝试过：

{% for item in site.posts %}
    {% if forloop.index % 2 == 1 %}

但这似乎不起作用。我也尝试过：

(forloop.index % 2) == 1

和：

forloop.index - (forloop.index / 2 * 2) == 1

原文

If I have a for loop in Liquid (using Jekyll), how can I target even (or odd) items only? I have tried:

{% for item in site.posts %}
    {% if forloop.index % 2 == 1 %}

but that doesn't seem to work. I have also tried:

(forloop.index % 2) == 1

and:

forloop.index - (forloop.index / 2 * 2) == 1

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薯片软お妹 2025-01-04 22:57:36

我想你会想为此使用循环标签。例如：

{% for post in site.categories.articles %}
   <article class="{% cycle 'odd', 'even' %}"></article>
{% endfor %}

如果您希望每个周期使用不同的 HTML 标记：

{% for item in site.posts %}
  {% capture thecycle %}{% cycle 'odd', 'even' %}{% endcapture %}
  {% if thecycle == 'odd' %}
    <div>echo something</div>
  {% endif %}
{% endfor %}

您可以在 Liquid for Designers，尽管那里的示例并不是特别有帮助。此 Shopify 支持线程也应该有所帮助。

I think you'll want to use the cycle tag for this. For example:

{% for post in site.categories.articles %}
   <article class="{% cycle 'odd', 'even' %}"></article>
{% endfor %}

If you want different HTML markup for each cycle:

{% for item in site.posts %}
  {% capture thecycle %}{% cycle 'odd', 'even' %}{% endcapture %}
  {% if thecycle == 'odd' %}
    <div>echo something</div>
  {% endif %}
{% endfor %}

You can find more information on it at Liquid for Designers, although the example there isn't particularly helpful. This Shopify support thread should also help.

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爱*していゐ 2025-01-04 22:57:36

与 Shopify 支持线程相反/stackoverflow.com/a/8980590/6884">Ales Lande 的回答说，Liquid中有一个modulo函数 - 形式为modulo 过滤器。

有了它，您可以执行以下操作：

{% for item in site.posts %}
    {% assign mod = forloop.index | modulo: 2 %}
    {% if mod == 0 %}
        <!-- even -->
    {% else %}
        <!-- odd -->
    {% endif %}
{% endfor %}

In contrast to what the Shopify support thread in Ales Lande's answer says, there is a modulo function in Liquid - in form of the modulo filter.

With it, you can do this:

{% for item in site.posts %}
    {% assign mod = forloop.index | modulo: 2 %}
    {% if mod == 0 %}
        <!-- even -->
    {% else %}
        <!-- odd -->
    {% endif %}
{% endfor %}

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