lib/gretel/crumb.rb in gretel-1.2.1 vs lib/gretel/crumb.rb in gretel-2.0.0.beta1

@@ -1,9 +1,38 @@
 module Gretel
   class Crumb
-    attr_accessor :links, :parent
-    
-    def initialize(links, parent)
-      @links, @parent = links, parent
+    # Initializes a new crumb from the given +key+.
+    # It finds the breadcrumb created in +Gretel::Crumbs.layout+ and renders the block using the arguments supplied in +args+.
+    def initialize(key, *args)
+      block = Gretel::Crumbs.crumbs[key]
+      raise ArgumentError, "Breadcrumb :#{key} not found." unless block
+      @key = key
+      instance_exec *args, &block
     end
+
+    # Sets link of the breadcrumb.
+    def link(text, url)
+      links << Gretel::Link.new(key, text, url)
+    end
+
+    # Holds all of the breadcrumb's links as a breadcrumb can have multiple links.
+    def links
+      @links ||= []
+    end
+
+    # Sets or gets the parent breadcrumb.
+    # If you supply a parent key and optional arguments, it will set the parent.
+    # If nothing is supplied, it will return the parent, if this has been set.
+    #
+    # Example:
+    #   parent :category, category
+    def parent(*args)
+      return @parent unless args.any?
+      key = args.shift
+      
+      @parent ||= Gretel::Crumb.new(key, *args)
+    end
+
+    # Key of the breadcrumb.
+    attr_reader :key
   end
 end
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