Use slim to write your Javascript templates

ALPHA

Writing Javascript templates for Backbone.js (or other frameworks) in your app? Would you like to use slim and the asset pipeline?

This gem adds slim templating support to the Rails 3.1 asset pipeline. This gem works with the EJS gem and JST asset engine to make your slim available as a compiled Javascript template.

Installing

Add this to your Gemfile

gem 'slim_assets'
gem 'ejs'
gem 'slim'

Using slim for your Javascript templates

Templates directory

You should locate your templates under app/assets; we suggest app/assets/templates. In your Javascript manifest file (for example application.js), use require_tree

//= require_tree ../templates

The template file

Inside your templates directory, add your template file. The file should be named as follows

your_template_name.jst.ejs.slim

The asset pipeline will then generate the actual Javascript asset

Convert your slim to HTML
Compile the HTML to an EJS Javascript template
Add the template to the JST global under the templates name

Important! The asset pipeline is not invoking a controller to generate the templates. If you are using existing view templates, you may have to edit templates to remove some references to controller helpers.

EJS

In your template file you can use the EJS delimiters as you would normally. If you want to use them in attributes mark the attribute html_safe.

= f.text_field :email, class: 'text', value: '<%= email %>'.html_safe

Helpers

All the ActionView and route helpers are available in your template. If you use form_for and the related helpers, you should use the new object form, even if you are writing an edit form, for example

= form_for :contact, url: "javascript_not_working", html: {:class => :edit_contact, :method => :put} do |f|
  %p
    = f.label :name, "Name"
    = f.text_field :name, class: 'text required', autofocus: true, value: '<%= name %>'.html_safe

Credits

Les Hill : @leshill
Wes Gibbs : @wgibbs

This gem is heavily based on their haml_assets gem