Module: CdnAssets::ViewHelpers

Defined in:
lib/cdn_assets/view_helpers.rb

Constant Summary collapse

ASSET_CDN_URLS = 
{
  bootstrap: {
    cdnjs: '//cdnjs.cloudflare.com/ajax/libs/twitter-bootstrap/{v}/css/bootstrap.min.css',
    jsdelivr: '//cdn.jsdelivr.net/bootstrap/{v}/css/bootstrap.min.css'
  },
  bootstrap_combined: {
    netdna: '//netdna.bootstrapcdn.com/twitter-bootstrap/{v}/css/bootstrap-combined.min.css'
  },
  bootstrap_js: {
    cdnjs: '//cdnjs.cloudflare.com/ajax/libs/twitter-bootstrap/{v}/js/bootstrap.min.js',
    jsdelivr: '//cdn.jsdelivr.net/bootstrap/{v}/js/bootstrap.min.js',
    netdna: '//netdna.bootstrapcdn.com/twitter-bootstrap/{v}/js/bootstrap.min.js'
  },
  bootstrap_responsive: {
    cdnjs: '//cdnjs.cloudflare.com/ajax/libs/twitter-bootstrap/{v}/css/bootstrap-responsive.min.css',
    jsdelivr: '//cdn.jsdelivr.net/bootstrap/{v}/css/bootstrap-responsive.min.css'
  },
  font_awesome: {
    cdnjs: '//cdnjs.cloudflare.com/ajax/libs/font-awesome/{v}/css/font-awesome.min.css',
    jsdelivr: '//cdn.jsdelivr.net/fontawesome/{v}/css/font-awesome.min.css',
    netdna: '//netdna.bootstrapcdn.com/font-awesome/{v}/css/font-awesome.min.css'
  },
  jquery: {
    cdnjs: '//cdnjs.cloudflare.com/ajax/libs/jquery/{v}/jquery.min.js',
    google: '//ajax.googleapis.com/ajax/libs/jquery/{v}/jquery.min.js',
    jsdelivr: '//cdn.jsdelivr.net/jquery/{v}/jquery-{v}.min.js',
    microsoft: '//ajax.aspnetcdn.com/ajax/jQuery/jquery-{v}.min.js'
  }
}

Instance Method Summary collapse

Instance Method Details

#cdn_asset(asset, options = {}) ⇒ Object

Raises:

  • (ArgumentError) 


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# File 'lib/cdn_assets/view_helpers.rb', line 37

def cdn_asset(asset, options = {})
  cdn = options.delete(:c)
  raise ArgumentError, 'Asset CDN not specified' if cdn.nil?

  version = options.delete(:v)
  raise ArgumentError, 'Asset version not specified' if version.nil?

  cdn_urls = ASSET_CDN_URLS[asset.to_sym]
  raise ArgumentError, 'Invalid asset name specified' if cdn_urls.nil?

  url = cdn_urls[cdn.to_sym]
  raise ArgumentError, 'Invalid CDN name specified' if url.nil?

  url = url.gsub '{v}', version.to_s
  if url.end_with? '.js'
    javascript_include_tag url, options
  elsif url.end_with? '.css'
    stylesheet_link_tag url, options
  else
    raise RuntimeError, 'Unexpected asset type encountered' # should never happen
  end
end

#cdn_assets(assets = {}) ⇒ Object 



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# File 'lib/cdn_assets/view_helpers.rb', line 33

def cdn_assets(assets = {})
  assets.map { |asset, options| cdn_asset asset, options }.join("\n").html_safe
end