Module: Waves::Helpers::UrlHelper

Included in:
Erubis::Context, Renderers::Scope
Defined in:
lib/helpers/url_helper.rb

Instance Method Summary collapse

Instance Method Details

Creates a link tag of the given name using a URL created by the set of options. See the valid options in the documentation for ActionController::Base#url_for. It’s also possible to pass a string instead of an options hash to get a link tag that uses the value of the string as the href for the link. If nil is passed as a name, the link itself will become the name.

The html_options will accept a hash of html attributes for the link tag. It also accepts 3 modifiers that specialize the link behavior.

  • :confirm => 'question?': This will add a JavaScript confirm prompt with the question specified. If the user accepts, the link is processed normally, otherwise no action is taken.

  • :popup => true || array of window options: This will force the link to open in a popup window. By passing true, a default browser window will be opened with the URL. You can also specify an array of options that are passed-thru to JavaScripts window.open method.

  • :method => symbol of HTTP verb: This modifier will dynamically create an HTML form and immediately submit the form for processing using the HTTP verb specified. Useful for having links perform a POST operation in dangerous actions like deleting a record (which search bots can follow while spidering your site). Supported verbs are :post, :delete and :put. Note that if the user has JavaScript disabled, the request will fall back to using GET. If you are relying on the POST behavior, your should check for it in your controllers action by using the request objects methods for post?, delete? or put?.

You can mix and match the html_options with the exception of :popup and :method which will raise an ActionView::ActionViewError exception.

link_to "Visit Other Site", "http://www.rubyonrails.org/", :confirm => "Are you sure?"
link_to "Help", { :action => "help" }, :popup => true
link_to "View Image", { :action => "view" }, :popup => ['new_window_name', 'height=300,width=600']
link_to "Delete Image", { :action => "delete", :id => @image.id }, :confirm => "Are you sure?", :method => :delete



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# File 'lib/helpers/url_helper.rb', line 61

def link_to(name, options = {}, html_options = nil, *parameters_for_method_reference)
  if html_options
    html_options = html_options.stringify_keys
    # convert_options_to_javascript!(html_options)
    tag_options = tag_options(html_options)
  else
    tag_options = nil
  end

  url = options.is_a?(String) ? options : self.url_for(options, *parameters_for_method_reference)
  "<a href=\"#{url}\"#{tag_options}>#{name || url}</a>"
end

#url_for(options = {}, *parameters_for_method_reference) ⇒ Object

Returns the URL for the set of options provided. This takes the same options as url_for in action controller. For a list, see the documentation for ActionController::Base#url_for. Note that it’ll set :only_path => true so you’ll get the relative /controller/action instead of the fully qualified example.com/controller/action.

When called from a view, url_for returns an HTML escaped url. If you need an unescaped url, pass :escape => false in the options.



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# File 'lib/helpers/url_helper.rb', line 13

def url_for(options = {}, *parameters_for_method_reference)
  if options.kind_of? Hash
    options = { :only_path => true }.update(options.symbolize_keys)
    escape = options.key?(:escape) ? options.delete(:escape) : true
  else
    escape = true
  end

  url = options[:url] #@controller.send(:url_for, options, *parameters_for_method_reference)
  escape ? html_escape(url) : url
end