Ruby 1.9.1 bugfixes

Signed-off-by: Tobias Lütke <[email protected]>

lib/liquid/drop.rb

@@ -1,9 +1,9 @@
 module Liquid
-  
+
   # A drop in liquid is a class which allows you to to export DOM like things to liquid
-  # Methods of drops are callable. 
-  # The main use for liquid drops is the implement lazy loaded objects. 
-  # If you would like to make data available to the web designers which you don't want loaded unless needed then 
+  # Methods of drops are callable.
+  # The main use for liquid drops is the implement lazy loaded objects.
+  # If you would like to make data available to the web designers which you don't want loaded unless needed then
   # a drop is a great way to do that
   #
   # Example:
@@ -13,38 +13,39 @@ module Liquid
   #      Shop.current.products.find(:all, :order => 'sales', :limit => 10 )
   #   end
   # end
-  #  
-  # tmpl = Liquid::Template.parse( ' {% for product in product.top_sales %} {{ product.name }} {%endfor%} '  )
-  # tmpl.render('product' => ProductDrop.new ) # will invoke top_sales query. 
   #
-  # Your drop can either implement the methods sans any parameters or implement the before_method(name) method which is a 
+  # tmpl = Liquid::Template.parse( ' {% for product in product.top_sales %} {{ product.name }} {%endfor%} '  )
+  # tmpl.render('product' => ProductDrop.new ) # will invoke top_sales query.
+  #
+  # Your drop can either implement the methods sans any parameters or implement the before_method(name) method which is a
   # catch all
   class Drop
     attr_writer :context
 
-    # Catch all for the method 
+    # Catch all for the method
     def before_method(method)
       nil
     end
-    
+
     # called by liquid to invoke a drop
-    def invoke_drop(method)          
-      if self.class.public_instance_methods.include?(method.to_s)
-        send(method.to_sym) 
-      else        
+    def invoke_drop(method)
+      # for backward compatibility with Ruby 1.8
+      methods = self.class.public_instance_methods.map { |m| m.to_s }
+      if methods.include?(method.to_s)
+        send(method.to_sym)
+      else
         before_method(method)
       end
     end
-    
+
     def has_key?(name)
       true
     end
-    
+
     def to_liquid
       self
     end
 
     alias :[] :invoke_drop
   end
-  
 end