Module: Helperful::AssetTagHelper

Defined in:
lib/helperful/asset_tag_helper.rb

Overview

Asset Tag Helper

Provides a set of helpers for generating HTML that links views to assets such as images, javascripts, stylesheets, and feeds.

Requirements

The following requirements are mandatory for this module. Including this helper will automatically include them unless already included.

  • ActionView::Helpers::AssetTagHelper

Class Method Summary collapse

Instance Method Summary collapse

Class Method Details

.included(base) ⇒ Object 



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# File 'lib/helperful/asset_tag_helper.rb', line 35

def self.included(base)
  base.class_eval do
    base.included_modules.include?(ActionView::Helpers::AssetTagHelper) || include(ActionView::Helpers::AssetTagHelper)
  end
end

Instance Method Details

Returns a link tag that search engine crawlers may use to determine the preferred version of a page with multiple URLs.

More details about the canonical link tag are available at the following sources:

Control the link options in url_for format using the url_options.

Examples

canonical_link_tag
# => <link rel="canonical" href=http://www.currenthost.com/controller/action" />
canonical_link_tag(:action => "show")
# => <link rel="canonical" href=http://www.currenthost.com/controller/show" />
canonical_link_tag("http://www.example.com/product.php?item=swedish-fish")
# => <link rel="canonical" href="http://www.example.com/product.php?item=swedish-fish" />



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# File 'lib/helperful/asset_tag_helper.rb', line 60

def canonical_link_tag(url_options = {})
  tag(
    "link",
    "rel"   => "canonical",
    "href"  => url_options.is_a?(Hash) ? url_for(url_options.merge(:only_path => false)) : url_options
  )
end

#javascript(*files) ⇒ Object

Converts given files in javascript include statements and appends them in the head section of the page.

Examples

# in your index.html.erb view
<% javascript :foo, :bar, :cache => "foobar" %>

# this is equivalent to
<% content_for :head, javascript_include_tag(:foo, :bar, :cache => "foobar") %>

# in your application
<% yield :head %>



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# File 'lib/helperful/asset_tag_helper.rb', line 82

def javascript(*files)
  content_for(:head, javascript_include_tag(*files))
end

#stylesheet(*files) ⇒ Object

Converts given files in stylesheet link statements and appends them in the head section of the page.

Examples

# in your index.html.erb view
<% stylesheet :foo, :bar, :cache => "foobar" %>

# this is equivalent to
<% content_for :head, stylesheet_link_tag(:foo, :bar, :cache => "foobar") %>

# in your application
<% yield :head %>



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# File 'lib/helperful/asset_tag_helper.rb', line 100

def stylesheet(*files)
  content_for(:head, stylesheet_link_tag(*files))
end