Problem with including variables

[jgcbrouns]

Hello everybody,

First let me explain what I want to do:
In php I have variables. i.e. $variable1 = 'red';
These variables I want to inject into the .less files for compilation: @button-top-top-color: $variable1
and in the CSS this would yield: @button-top-top-color: 'red';

I am having troubles with including variables into .less files that I can subsequently convert into .css by using assetic. I found the $vars array that is a parameter in the FileAsset class. I assume this parameter can be used to set additional variables that will be injected into assetic when dumping?

I used this code to test it, but I got the following error: Uncaught RuntimeException: The asset target path "_test_1" must contain the variable "{color}"

use Assetic\Asset\AssetCollection;
use Assetic\Asset\FileAsset;
use Assetic\Filter\LessFilter;

// Play here
$variables = ['color'];
$fileAsset = new FileAsset(__DIR__.'/test.less', [new LessFilter()], null, null, $variables);
$fileAsset->setValues(['color' => '#000;']);

$css = new AssetCollection([
    $fileAsset,
]);

print_r($css->dump());

Another idea to solve my problem would be to create a StringAsset that holds the .less content with its variables. This string I would have parsed beforehand. Would this work?

Kind regards, Jeroen

[aik099]

I've also thought that $vars is something replaced in CSS before passing to filters, but after looking in the code this is somehow used to build final asset name. I wasn't able however find any examples of that.

[isometriks]

$less = new LessFilter();
$less->addParserOption('globalVars', ['color' => '#000']);

I believe the variables you're setting are meant to be used for things like i18n to generate multiple asset names / urls. Each filter handles their variables differently. Pretty sure Less just inserts your variables at the end of the file on its own before parsing.

Edit: http://lesscss.org/usage/#using-less-in-the-browser-options

globalVars adds to beginning so it won't overwrite.
modifyVars adds to the end so it overrides variables.

[jgcbrouns]

Thank you very much for responding aik099 and isometriks. I managed to get it to work by using your sample code!