Created
November 25, 2012 17:54
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Automatic ejs template compilation
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| <%= "#{Rails.application.class.parent_name}" %>.Templates = <%= templates %>; |
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| require 'ejs' | |
| require 'erb' | |
| require 'listen' | |
| require 'fileutils' | |
| namespace :jst do | |
| @assets_path = File.join(Rails.root, 'lib', 'assets') | |
| @javascripts_path = File.join(Rails.root, 'app', 'assets', 'javascripts') | |
| @templates_path = File.join(@javascripts_path, 'templates') | |
| @erb_template = File.join(@assets_path, 'compiled_templates.erb') | |
| @template_file = File.join(@javascripts_path, 'application', 'templates.js') | |
| desc "Compile the javascript templates" | |
| task :build => :environment do | |
| begin | |
| templates = templates_hash @templates_path | |
| compiled_templates = ERB.new(File.read(@erb_template)) | |
| templates = template_string templates | |
| File.open(@template_file, "w+") { |f| f << compiled_templates.result(binding) } | |
| puts "#{@template_file.gsub(Rails.root.to_s, '')} was built successfully" | |
| rescue Exception => e | |
| puts "There was an error compiling the templates\n" | |
| raise e | |
| end | |
| end | |
| desc "Watch the templates for changes and compile automatically" | |
| task :watch => :environment do | |
| puts "Watching for js template changes. Press Ctrl+C to quit" | |
| Listen.to(@templates_path, filter: /\.jst$/) do | |
| Rake::Task["jst:build"].execute | |
| end | |
| end | |
| def templates_hash(path, data = {}, namespace = nil) | |
| Dir.foreach(path) do |entry| | |
| next if entry =~ /^\.{1,2}$/ | |
| full_path = File.join(path, entry) | |
| namespace = File.basename(entry, '.jst') | |
| if File.directory?(full_path) | |
| templates_hash(full_path, data[namespace] = {}) | |
| else | |
| template_name = File.basename(entry, '.jst') | |
| data[template_name] = EJS.compile(File.read(full_path)) | |
| end | |
| end | |
| data | |
| end | |
| def template_string(templates) | |
| templates.to_s.gsub(/\=\>/, ': ').gsub(/\"function/, 'function').gsub(/\}\"/, '}') | |
| end | |
| end |
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