Cancan link Helper

cancan_link_helper.rb

module CancanLinkHelper

  def show_link(*args, &block)
    if block_given? && can?(:read, args[0])
      object = args[0]
      html_options = args[1] || {}
      show_link(object, capture(&block), html_options)
    elsif can?(:read, args[0])
      object  = args[0]
      content = args[1] || glyph(:eye_open)
      html_options = args[2] || {}
      url = html_options[:url] || object
      link_to(content, url, html_options)
    end
  end

  def edit_link(*args, &block)
    if block_given? && can?(:update, args[0])
      object = args[0]
      html_options = args[1] || {}
      edit_link(object, capture(&block), html_options)
    elsif can?(:update, args[0])
      object  = args[0]
      content = args[1] || glyph(:pencil)
      html_options = args[2] || {}
      url = html_options[:url] || [:edit, object].flatten
      link_to(content, url, html_options)
    end
  end

  def destroy_link(*args, &block)
    if block_given? && can?(:destroy, args[0])
      object = args[0]
      html_options = args[1] || {}
      destroy_link(object, capture(&block), html_options)
    elsif can?(:destroy, args[0])
      object  = args[0]
      content = args[1] || glyph(:remove)
      html_options = args[2] || {}
      url = html_options[:url] || object
      link_to(content, url, html_options.merge(method: :delete, confirm: t('actions.confirm')))
    end
  end

  def create_link(*args, &block)
    if block_given? && can?(:create, args[0])
      object = args[0]
      html_options = args[1] || {}
      create_link(object, capture(&block), html_options)
    elsif can?(:create, args[0])
      object  = args[0]
      content = args[1] || glyph(:plus)
      html_options = args[2] || {}
      if object.kind_of? Array
        object_array = object
        object = object_array.pop
        object_class = (object.kind_of?(Class) ? object : object.class)
        url = html_options[:url] || ([:new] + object_array + [object_class.name.underscore.to_sym])
      else
        object_class = (object.kind_of?(Class) ? object : object.class)
        url = html_options[:url] || [:new, object_class.name.underscore.to_sym]
      end
      link_to(content, url, html_options)
    end
  end

end