chain.rb in dynamoid-1.3.1

- old
+ new

@@ -3,13 +3,14 @@
   module Criteria
 
     # The criteria chain is equivalent to an ActiveRecord relation (and realistically I should change the name from
     # chain to relation). It is a chainable object that builds up a query and eventually executes it by a Query or Scan.
     class Chain
+      # TODO: Should we transform any other types of query values?
+      TYPES_TO_DUMP_FOR_QUERY = [:string, :integer, :boolean]
       attr_accessor :query, :source, :values, :consistent_read
       include Enumerable
-
       # Create a new criteria chain.
       #
       # @param [Class] source the class upon which the ultimate query will be performed.
       def initialize(source)
         @query = {}
@@ -28,10 +29,17 @@
       # @example A more complicated criteria
       #   where(:name => 'Josh', 'created_at.gt' => DateTime.now - 1.day)
       #
       # @since 0.2.0
       def where(args)
-        args.each {|k, v| query[k.to_sym] = v}
+        args.each do |k, v|
+          sym = k.to_sym
+          query[sym] = if (field_options = source.attributes[sym]) && (type = field_options[:type]) && TYPES_TO_DUMP_FOR_QUERY.include?(type)
+                         source.dump_field(v, field_options)
+                       else
+                         v
+                       end
+        end
         self
       end
 
       def consistent
         @consistent_read = true