How to Manage CSS Asset Paths in Symfony 2 for Secure and Efficient Deployment?

Paths for CSS Assets in Symfony 2

Problem:

In a Symfony 2 project, you have a CSS file with references to images and fonts (e.g., url(..)). You want to reference these files in the CSS without directly exposing the originals in the public directory.

Possible Solutions:

Solution 1: Absolute Paths

Changing all paths in the CSS to absolute paths is not a suitable solution as the application may not always be accessed from the same subdirectory.

Solution 2: Assetic with "cssrewrite" Filter

Using Assetic with the "cssrewrite" filter can help rewrite paths, but it often results in incorrect path generation.

Solution 3: Relative Paths

Changing all paths in the CSS to be relative to the stylesheet location works except in the development environment, where the CSS path contains "/app_dev.php" and leads to a "NotFoundHttpException" for image paths.

Working Solution:

The only working solution is to place the original CSS files in a private directory (e.g., "Resources/assets/css") and compile them to a public directory (e.g., "web/css") using Assetic.

Code Structure:

...
+-src/
| +-MyCompany/
|   +-MyBundle/
|     +-Resources/
|       +-assets/
|         +-css/
|           +-stylesheets...
+-web/
| +-css/
|   +-stylexyz.css
| +-images/
|   +-images...
...

Assetic Twig Code:

{% stylesheets
    '@MyCompanyMyBundle/Resources/assets/css/*.css'
    filter="cssrewrite"
%}
    <link rel="stylesheet" href="{{ asset_url }}" />
{% endstylesheets %}

Compilation Process:

This process will ensure that the CSS files are compiled into the public directory with the correct image paths:

1. Copy the original CSS files to the public directory.
2. Run "assetic:dump" to compile the CSS files.
3. Remove the original CSS files from the public directory.

Advantages:

• Allows for storing original CSS files in a private directory.
• Compiles CSS to the public directory with correct image paths.
• Does not expose original CSS files to the public.

The above is the detailed content of How to Manage CSS Asset Paths in Symfony 2 for Secure and Efficient Deployment?. For more information, please follow other related articles on the PHP Chinese website!