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function breadcrumbs(options, callback) { | |
if (!options) options = {}; | |
items = new NavigationBuilder(); | |
if (callback) | |
callback(items); | |
... | |
} | |
// example usage | |
breadcrumbs({}, function(builder) { | |
builder.item("Home", root_path()); | |
builder.item("News", news_path()); | |
}); |
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module Activo | |
module Rails | |
module Helper | |
# Displays a breadcrumb trail | |
# | |
# options - A hash of attributes to apply to the wrapping div tag | |
# | |
# Example: | |
# <div class="block"> | |
# <div class="content"> | |
# <h2><%= @news_item.title %></h2> | |
# <p><%= @news_item.content %></p> | |
# </div> | |
# <%= breadcrumbs do |b| | |
# b.item "Home", root_path | |
# b.item "News", news_path | |
# b.item "Awesome New Things", news_path(@news_item), :active => true | |
# %> | |
# </div> | |
# | |
# Returns the breadcrumb trail. | |
def breadcrumbs(options = {}) | |
items = NavigationBuilder.new | |
yield items if block_given? | |
options[:class] ||= "".html_safe | |
options[:class] << " breadcrumb".html_safe | |
options[:class].strip! | |
content_tag("div", options) do | |
content_tag("ul") do | |
items.collect { |item| | |
content_tag("li", :class => item[:class]) do | |
if item[:active] | |
item[:label] | |
else | |
link_to(item[:label], item[:href]) | |
end | |
end | |
}.join("").html_safe | |
end | |
end | |
end | |
# Assists in the creation of navigation menus | |
class NavigationBuilder | |
attr_reader :item_list | |
include Enumerable | |
def initialize | |
@item_list = [] | |
end | |
def each(&blk) | |
item_list.each(&blk) | |
end | |
def item(label, path, options = {}) | |
options[:class] ||= "" | |
options[:class] << " first" if item_list.empty? | |
options[:class] << " active" if options[:active] | |
options[:link_options] ||= {} | |
options[:link_options].merge!(:method => options[:method]) if options[:method] | |
item_list << { | |
:label => label, | |
:href => path, | |
:class => options[:class].strip, | |
:link_options => options[:link_options], | |
:icon => options[:icon], | |
:active => !!options[:active] | |
} | |
end | |
end | |
end | |
end | |
end |
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