Assets Manager doesn't use result of preceding css filter as the source for the next one

[Lisio]

Using custom scss filter and framework's cssmin filter for one scss file results in a file, that contains both the generated css and minified scss.

ScssFilter.php

class ScssFilter implements Phalcon\Assets\FilterInterface
{
    public function filter($contents)
    {
        $scss = new scssc();
        return $scss->compile($contents);
    }
}

GenericController.php

$this->assets
->collection('css')
->setTargetPath('css/result.css')
->setTargetUri('css/result.css')
->addCss('../app/assets/css/style.scss')
->addFilter(new ScssFilter())
->addFilter(new Phalcon\Assets\Filters\Cssmin());

style.scss

a {
    b {
        color: black;
    }
}

result.css

a b {
  color: black; }
a{b { color: black;}}

[dreamsxin]

Could you please submit a test to reproduce the problem?
I test it ok, If the problem is the class SCSSC?

class TrimFilter implements Phalcon\Assets\FilterInterface
{
    public function filter($contents)
    {
        $contents = str_replace(array("\n", "\r", " "), '', $contents);
        return $contents;
    }
}

$assets = new Phalcon\Assets\Manager();
$css = $assets->collection('css');

$css->setTargetPath('unit-tests/assets/production/1198.css');
$css->setTargetUri('production/1198.css');
$css->addCss('unit-tests/assets/1198.css');
$css->addFilter(new trimFilter());
$css->join(TRUE);
$html = $assets->outputCss('css');

result:

a{b{color:black;}}

[Lisio]

You use only one filter. Please try this code:

$css->setTargetPath('unit-tests/assets/production/1198.css');
$css->setTargetUri('production/1198.css');
$css->addCss('unit-tests/assets/1198.css');
$css->addFilter(new trimFilter());
$css->addFilter(new Phalcon\Assets\Filters\Cssmin());
$css->join(TRUE);
$html = $assets->outputCss('css');

[phalcon]

This is fixed in 1.3.0, could you give it a try?

[Lisio]

Yes, in 1.3.0 it works as expected.