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When you develop a widget, you could need one image that is in the assets folder, you can use it simply within a css. You can load a css or javascript script doing this:
Yii::app()->getClientScript()->registerCssFile($filename);
or maybe this:
Yii::app()->getClientScript()->registerScriptFile($filename);
But, when your widget javascript code needs an image that is in the assets folder, you need the image path! We are talking about:
<img src="http://www.example.com/webapp/assets/123124de/widget/image.png" />
or
<img src="/webapp/assets/123124de/widget/image.png" />
This happens when a javascript code manipulate the DOM. If your widget use a css, it can get images simply by url(../images/image.png); because your image is in the same assets folder of the css.
So. You can register a script that creates a global javascript variable. Then, you can use this variable inside the javascript code that needs this value:
$scripts = array(
'js/script1.js',
'js/script2.js'
);
$assetFolder = Yii::app()->getAssetManager()->publish('assets');
$script = 'assetUrl = "' . $assetFolder . '";';
Yii::app()->getClientScript()->registerScript('_', $script, CClientScript::POS_HEAD);
foreach ($scripts as $file)
Yii::app()->getClientScript()->registerScriptFile($file, CClientScript::POS_END);
Now, in your script1.js, you can use the variable assetUrl. For example, if you do alert(assetUrl); you'll see the path of this assets, ıe. '/assets/234hn43/'.
variable name
Just to make it more clear:
rather use JS variable with more unique name, like [widget name]_assetUrl, or you will end up in hard to trace errors when one widget will override its value from other widget... :)
corrected variable name
Right! I'll correct also the widget when I use this technique. Thank you!
great ! it is helpful
nice, good job, i v thought if i could hidden the $assetFolder to somewhere ,
"$('body').data('MyWidgetAssetsUrl',{$assetsFolder});" then register it ;
right!
"$('body').data('MyWidgetAssetsUrl',{$assetsFolder});" is a jquery function and means that you have loaded jquery and DOM model. If you see, I set assetUrl in
tag and var is global:and in PS_END I can load javascript files that uses this var before dom is loaded:
I dont want to wait dom load. You can see my lyiightbox widget to see this tips in action.
If you have any questions, please ask in the forum instead.
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