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require 'rails/generators'
module Jquery
module Datatables
module Generators
class InstallGenerator < ::Rails::Generators::Base
desc "This generator installs jQuery dataTables to the Asset Pipeline"
argument :style, :type => :string, :default => 'regular'
def add_assets
js_manifest = 'app/assets/javascripts/application.js'
css_manifest = 'app/assets/stylesheets/application.css'
js_strings = js_assets_map[style.to_sym].join
insert_into_file js_manifest, js_strings, :after => "jquery_ujs\n" if File.exists?(js_manifest)
insert_css_strings(css_manifest) if File.exists?(css_manifest)
end
private
def insert_css_strings(css_manifest)
content = File.read(css_manifest)
css_strings = css_assets_map[style.to_sym].join
if requires_tree(content)
insert_into_file css_manifest, css_strings, :after => "require_tree .\n"
elsif requires_self(content)
insert_into_file css_manifest, css_strings, :before => " *= require_self\n"
else
insert_into_file css_manifest, css_strings, :before => " */"
end
end
def requires_tree(content)
content.match(/require_tree\s+\.\s*$/)
end
def requires_self(content)
content.match(/require_self\s*$/)
end
def js_assets_map
{
:regular => ["//= require dataTables/jquery.dataTables\n"],
:bootstrap2 => [
"//= require dataTables/jquery.dataTables\n",
"//= require dataTables/bootstrap/2/jquery.dataTables.bootstrap\n"
],
:bootstrap3 => [
"//= require dataTables/jquery.dataTables\n",
"//= require dataTables/bootstrap/3/jquery.dataTables.bootstrap\n"
],
:foundation => [
"//= require dataTables/jquery.dataTables\n",
"//= require dataTables/jquery.dataTables.foundation\n"
],
:responsive => [
"//= require dataTables/jquery.dataTables\n",
"//= require dataTables/extras/dataTables.responsive\n"
]
}
end
def css_assets_map
{
:regular => [" *= require dataTables/jquery.dataTables\n"],
:bootstrap2 => [" *= require dataTables/bootstrap/2/jquery.dataTables.bootstrap\n"],
:bootstrap3 => [" *= require dataTables/bootstrap/3/jquery.dataTables.bootstrap\n"],
:foundation => [" *= require dataTables/jquery.dataTables.foundation\n"],
:responsive => [" *= require dataTables/extras/dataTables.responsive\n"]
}
end
end
end
end
end
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