Grails Asset Pipeline unchaged - caching

Question

I am new at Grails and I have something to ask who is expert in Grails. I use asset pipeline as resources management in my project. Everything is good, But there is an issue that, whether my resources file (scss filess, coffee script files, ...) is changed or not, the resources are compiled every time views are rendered (in dev and test environment). This makes project run slow. Is there any solution to cache resource in asset pipeline, therefore if there is not any changing, the resources are not compiled. Thanks!

Answer 1

If you are using require to build a require tree and then refer the tree in your views then you can directly exclude raw resources getting pre-compiled every time by the plugin. For example:
If you have a require tree under grails-app/assets/javascripts/application.js as
//= require jquery
//= require app/models.js
//= require_tree views
//= require_self
or .coffee
#= require app/models.js
#= require test
#= require_self
#= require_tree .
And you don't want models.js getting pre-compiled everytime the view using the require tree is rendered then add the configuration as below:
grails.assets.excludes = ["app/models.js"] //app/*js for all resources under app
Above config informs the plugin to avoid the precompilation of resources and will only be compiled when the asset is referred in the view and asset has any changes.
You can find more on the Usage documentation, mainly
Optionally, assets can be excluded from processing if included by your
require tree. This can dramatically reduce compile time for your
assets.
Above config can be environment specific and can be used only for dev and test. For Production environment and/or war the pre-compilation would not matter.
environments {
development {
grails.assets.excludes = ["app/models.js"]
}
}