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desc 'Compile engine assets - called via rake plugin:assets:precompile[plugin_name]'
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task 'plugin:assets:precompile', :engine do |t, args|
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# This task will generate assets for a plugin and namespace them in
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# plugin_name/public/assets/<plugin_name>. The generated manifest.yaml found
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# in the assets directory of the plugin is used to add the asset digest paths
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# to the Rails digests list in production.rb.
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#
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# The task expects a plugin to define their assets to precompile using SETTINGS.
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# This can be done via a settings yaml file or if the deinfition requires
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# complexity through the use of an initializer in the plugins engine.rb.
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#
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# Example: Simple Precompile List
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#
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# SETTINGS[:plugin_name] = {
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# :assets => {
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# :precompile => [
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# 'plugin_name/plugin.css',
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# 'plugin_name/plugin.js',
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# 'plugin_name/another_js_file.js
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# ],
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# }
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# }
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#
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# Example: Custom JS Compressor
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#
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# SETTINGS[:plugin_name] = {
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# :assets => {
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# :precompile => [
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# 'plugin_name/plugin.css',
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# 'plugin_name/plugin.js',
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# 'plugin_name/another_js_file.js
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# ],
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# :js_compressor => Uglifier.new(:mangle => false)
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# }
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# }
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def compile_assets(args = {})
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_ = ActionView::Base
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app = Rails.application
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assets = app.config.assets
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env = app.assets
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target = File.join(@engine_root, 'public', 'assets')
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assets.digests = {}
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assets.manifest = File.join(target, @engine.engine_name)
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assets.compile = SETTINGS[@engine.engine_name.to_sym][:assets][:compile] || assets.compile
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assets.compress = SETTINGS[@engine.engine_name.to_sym][:assets][:compress] || assets.compress
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assets.digest = args.fetch(:digest, true)
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assets.js_compressor = SETTINGS[@engine.engine_name.to_sym][:assets][:js_compressor]
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precompile = SETTINGS[@engine.engine_name.to_sym][:assets][:precompile]
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precompile = fix_indexes(precompile)
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Sprockets::Bootstrap.new(Rails.application).run
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compiler = Sprockets::StaticCompiler.new(env,
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target,
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precompile,
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:manifest_path => assets.manifest,
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:digest => assets.digest,
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:manifest => true)
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compiler.compile
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end
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# Used to add index manifest files to the paths for
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# proper resolution and addition when running Rails 3.2.8
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# in the SCL
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def fix_indexes(precompile)
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if Rails.version == '3.2.8'
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precompile.each do |asset|
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if File.basename(asset)[/[^\.]+/, 0] == 'index'
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asset.sub!(/\/index\./, '.')
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precompile << asset
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end
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end
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end
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precompile
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end
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if args[:engine]
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# Partially load the Rails environment to avoid
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# the need of a database being setup
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Rails.application.initialize!(:assets)
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@engine = "#{args[:engine].camelize}::Engine".constantize
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@engine_root = @engine.root
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compile_assets(:digest => false)
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compile_assets
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else
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puts "You must specify the name of the plugin (e.g. rake plugin:assets:precompile['my_plugin'])"
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end
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end
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