CODEWITHSUNDEEP
phpsymfonytwig
TaylorR
TaylorR

Reputation: 4013

Twig "trim" not working as expected

Using this Twig template:

{% for line in lines%}
    {{line}} after trim('.php') is: {{line|trim('.php')}}<br>
{% endfor %}

Using a controller in Silex to render the above template:

$app->get('/try', function () use ($app)
{
    $lines=[];
    $lines[]='123.php';
    $lines[]='news.php';
    $lines[]='map.php';

    return $app['twig']->render('try.html.twig', ['lines'=>$lines]);
}
    );

I receive the following output:

123.php after trim('.php') is: 123
news.php after trim('.php') is: news
map.php after trim('.php') is: ma

Note the last trim: map.php should become map but is now ma.

Upvotes: 0

Views: 1582

Answers (3)

Jovan Perovic
Jovan Perovic

Reputation: 20193

I think this is expected behavior.

trim() does not trim a substring but list of characters instead.

So:

map.php after trim('.php') is: ma

map.php -> does it start/end with any of ['.php'] -> TRUE  -> map.ph
map.ph  -> does it start/end with any of ['.php'] -> TRUE  -> map.p
map.p   -> does it start/end with any of ['.php'] -> TRUE  -> map.
map.    -> does it start/end with any of ['.php'] -> TRUE  -> map
map     -> does it start/end with any of ['.php'] -> TRUE  -> ma
ma      -> does it start/end with any of ['.php'] -> FALSE -> ma

It acts exactly like: php's trim()

Hope this helps.

Upvotes: 4

sjagr
sjagr

Reputation: 16502

As per the other listed answers, you're misinterpreting how Twig's trim function works (which uses the argument as a character map).

What you are probably looking for is the replace filter instead:

{% for line in lines %}
    {{ line }} after replace({'.php': ''}) is: {{ line|replace({'.php': ''}) }}<br>
{% endfor %}

Upvotes: 5

qooplmao
qooplmao

Reputation: 17759

Trim (as with the actual PHP function) uses the argument (or 2nd argument in regular PHP) as a character map rather than a set string.

This argument could be better explained as a list of characters that, if found in any order, will be trimmed from the beginning or end of the given string.

Upvotes: 2

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