Twig原始过滤器 - 文档令人困惑

Question

I've attached a snapshot of the Twig documentation for the raw filter, found here

I cannot grok what it means. Can someone please elucidate? Thankie...

Answer 1

From the same documentation:

The raw filter marks the value as being "safe"

Raw is a filter, thus it does not render any output: it just trasforms it. In this case, the "trasformation" consists in setting a "safe" mark on it so that the actual rendering (performed by the {{...}} tags) will not escape it.

If you re-read the following examples at the light of this, they should be more clear.

Let's take the second example:

{{ false ? hola : hello|raw }}

This means: since we cannot know in advance if the condition will be true or false, and since one of the two possibile outcomes is not safe, the whole {{...}} will escape the output regardless of the "raw" filter.

They are warning you precisely about this kind of "unexpected" behaviour. In such a case you should mark all as "raw":

{{ (false ? hola : hello)|raw }}