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Package craft3-asset-rev
Short Description A plugin to aid cache-busting in Craft 3
License MIT
Informations about the package craft3-asset-rev
Craft 3 Asset Rev (Cache Busting)
DEPRECATED: Please https://github.com/clubstudioltd/craft-asset-rev instead.
A Twig extension for Craft 3 that helps you cache-bust your assets by appending a query string or swapping out asset file names with their revved version, as they are defined in a JSON manifest file.
Manifest files would most likely be generated by Grunt/Gulp modules, such as grunt-filerev-assets or gulp-rev.
Why?
In order to speed up the load time of your pages, you can set a far-future expires header on your images, stylesheets and scripts. However, when you update those assets you'll need to update their file names to force the browser to download the updated version.
Using a manifest file is the recommended approach - you can read up on why using query strings isn't ideal here.
Installation
Install via composer:
or, download the plugin and copy the contents of src
into a folder called assetrev
in your plugins
directory.
Be sure to activate the plugin from the Craft plugins settings page. Once activated, you may want to specify a custom path to your asset manifest file within the plugin configuration.
Configuration
The plugin comes with a config.php
file that defines some sensible defaults.
If you want to set your own values you should create a assetrev.php
file in your config
directory. The contents of this file will get merged with the plugin defaults, so you only need to specify values for the settings you want to override.
Manifest Path
manifestPath
is where Craft should look for your manifest file. Non-absolute paths will be relative to the base path of your Craft installation (whatever CRAFT_BASE_PATH
is set to).
Assets Base Path
assetsBasePath
is the the base path to your assets. Again, this is relative to your craft base directory, unless you supply an absolute directory path.
Asset Url Prefix
assetUrlPrefix
will be prepended to the output of rev()
.
Note: You can use any environment variables that you may have set in your .env
file using the getenv()
function.
Example assetrev.php Config File
Usage
Once activated and configured you can use the rev()
function in your templates.
In some cases (e.g. when building additional files that aren't available in the manifest file or are files that are served via proxy), you can prevent the extension from throwing an exception about a missing file mapping by setting the optional $strict
parameter to false
:
This will append a query string (see below) if the file does not exist in the manifest file: css/not-available-in-manifest.css?1473534554
.
Manifest Files
css/main.css
will be replaced with the corresponding hashed filename as defined within your assets manifest .json file.
If the contents of your manifest file are...
then rev('css/main.css')
will expand to css/main.a9961d38.css
.
Query String Fallback
If the plugin can't find a valid manifest file it will fall back to appending a query string to your file, based on the time it was last modified. In this scenario rev('css/main.css')
will expand to something like css/main.css?1473534554
.