如何检查 Twig/Symfony2 中是否存在翻译项? [英] How to check if a translation item exists in Twig/Symfony2?
问题描述
这是我用于打印侧边栏项目的宏.每个 title
属性都是为了寻找 'tip' 而构建的.~ route
messages.it.yml
中的项目.
Here is my macro for printing a sidebar item. Each title
atttribute is build looking for 'tip.' ~ route
item in messages.it.yml
.
即使 trans 项不存在 Twig 也总是返回传递给 trans
过滤器的字符串.例如:
Even if the trans item does not exist Twig always return the string passed to trans
filter. For example:
tip:
dashboard: Dashboard
模板:
{% _self.sideitem('dashboard', 'home') %} // <a title="Dashboard">...
{% _self.sideitem('fail', 'home') %} // <a title="tip.fail">...
{% macro sideitem(route, icon) %}
{% set active = (route == app.request.get('_route')) %}
{% set icon = icon ? 'icon-' ~ icon ~ (active ? ' icon-white' : '') : '' %}
<li class="{{ active ? 'active' : '' }}">
<a href="{{ path(route) }}" title="{{ ('tip.' ~ route)|trans }}">
<i class="{{ icon }}"></i> {{ ('nav.' ~ route)|trans }}
</a>
</li>
{% endmacro %}
如何在实际打印之前检查是否存在跨项目?
编辑:一个残酷的解决方法可能是(代码未经测试):
EDIT: a brutal workaround could be (code not tested):
<li class="{{ active ? 'active' : '' }}">
{% set look = ('tip.' ~ route) %}
{% set foreign = look|trans %}
{% set has = not(look == foreign) %}
<a href="{{ path(route) }}" {{ not has ? '' : 'title="' ~ foreign ~ '"' }} >
<i class="{{ icon }}"></i> {{ ('nav.' ~ route)|trans }}
</a>
</li>
推荐答案
我想出的解决方案是这样的:
The solution I came up with was this one:
{% if "#{var}.something"|trans != "#{var}.something" %}
这只是检查翻译键的结果是否与翻译键本身不同.如果键没有翻译,trans"过滤器返回翻译键.
This just checks if the result of the translation key is different from the translation key itself. If a key has no translation, the "trans" filter returns the translation key.
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