lib/rasti/form.rb in rasti-form-1.0.3 vs lib/rasti/form.rb in rasti-form-1.1.0

@@ -54,16 +54,20 @@
     def to_s
       "#<#{self.class.name || self.class.superclass.name}[#{to_h.map { |n,v| "#{n}: #{v.inspect}" }.join(', ')}]>"
     end
     alias_method :inspect, :to_s
 
-    def attributes
-      assigned_attribute_names.each_with_object({}) do |name, hash|
+    def attributes(options={})
+      attributes_filter = {only: assigned_attribute_names, except: []}.merge(options)
+      (attributes_filter[:only] - attributes_filter[:except]).each_with_object({}) do |name, hash|
         hash[name] = serialize(read_attribute(name))
       end
     end
-    alias_method :to_h, :attributes
+    
+    def to_h
+      attributes
+    end
 
     def assigned?(name)
       assigned_attribute_names.include? name
     end
 
@@ -110,10 +114,10 @@
         end
       end
     end
 
     def assigned_attribute_names
-      self.class.attribute_names & instance_variables.map { |v| v.to_s[1..-1].to_sym }
+      @assigned_attribute_names ||= self.class.attribute_names & instance_variables.map { |v| v.to_s[1..-1].to_sym }
     end
 
     def serialize(value)
       if value.kind_of? Array
         value.map { |v| serialize v }
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