Twig-打印数组，不包含空值

Question

我有这样构造的数组

add_to_context('custom', [
  [
   'title' => 'My title',
   'link' => 'My link'
  ],
  [
    'title' => 'My title 1',
    'link' => 'My link 1'
  ]
]);

鉴于我有简单的循环

{% for item in custom %}
    <li>
        <h1>{{ item.title }}
        <img src="{{ item.link|e }}" target="_blank">

    </li>
{% endfor %}

而且一切正常。但是我想打印两个键都带有值的元素。例如，如果我有

[
  'title' => '',
  'link' => 'mylink'
]

我不想打印这个。如果链接为空，我也不要。如果两者都为空-相同。我只想在两个键都有值的情况下打印它。那么，我该怎么做呢？

Answer 1

You could do something like this, maybe.

Twig even has a little built in functionality for this:

<ul>
    {% for item in custom if item.title and item.link %}
        <li>{{ item.title }}</li>
    {% endfor %}
</ul>

I haven't tested it, but I assume the and in the if statement should work.