Created
July 8, 2010 15:26
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# Filters added to this controller apply to all controllers in the application. | |
# Likewise, all the methods added will be available for all controllers. | |
class ApplicationController < ActionController::Base | |
helper :all # include all helpers, all the time | |
protect_from_forgery # See ActionController::RequestForgeryProtection for details | |
#BREADCRUMBS | |
before_filter :trail | |
def self.trail(&block) | |
# Controller-level trails become filters so they run inside the | |
# request/response cycle, where internationalization etc works. | |
# instance_exec means you can use path helpers. | |
before_filter {|controller| controller.instance_exec(controller.send(:trail), &block) } | |
end | |
# trail {|t| t << ['Backend', '/backend/'] } | |
protected | |
def trail | |
@breadcrumb_trail ||= BreadcrumbTrail.new | |
end | |
helper_method :trail | |
class BreadcrumbTrail | |
def initialize | |
@crumbs = [] | |
end | |
def <<(crumb) | |
@crumbs << crumb | |
end | |
def append(crumbs) | |
@crumbs += crumbs | |
end | |
def to_html(response) | |
template = response.template | |
@crumbs.map { |crumb| | |
text, url = Array(crumb) | |
last_crumb = @crumbs.last | |
template.instance_eval { | |
link_to_unless((crumb == last_crumb || url.blank?), h(text), url) {|text| content_tag(:span, text) } | |
} | |
}.join(" > ") | |
end | |
end | |
end |
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