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@@ -34,6 +34,16 @@ module LuckySneaks
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         self.scope_for_url = options[:scope]
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         self.url_attribute = options[:url_attribute] || "url"
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       end
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+
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+      # Initialize the url fields for the records that need it. Designed for people who add
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+      # <tt>acts_as_url</tt> support once there's already development/production data they'd
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+      # like to keep around.
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+      def initialize_urls
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+        find(:all, :conditions => {:url => nil}).each do |instance|
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+          instance.send :ensure_unique_url
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+          instance.save
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+        end
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+      end
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     end
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   private

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@@ -92,4 +92,18 @@ class ActsAsUrlTest < Test::Unit::TestCase
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     @moc.update_attributes :title => "New and Improved"
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     assert_not_equal @original_url, @moc.url
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   end
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+  
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+  def test_should_mass_initialize_urls
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+    @doc_1 = Document.create!(:title => "Initial")
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+    @doc_2 = Document.create!(:title => "Subsequent")
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+    @doc_1.update_attribute :url, nil
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+    @doc_2.update_attribute :url, nil
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+    assert_nil @doc_1.url
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+    assert_nil @doc_2.url
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+    Document.initialize_urls
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+    @doc_1.reload
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+    @doc_2.reload
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+    assert_equal "initial", @doc_1.url
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+    assert_equal "subsequent", @doc_2.url
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+  end
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 end