support end-exclusive ... Ranges in SQL hash condition sanitization properly

Signed-off-by: NMichael Koziarski <michael@koziarski.com>
[#1865 state:committed]

activerecord/lib/active_record/base.rb

@@ -1992,12 +1992,16 @@ def all_attributes_exists?(attribute_names)
           attribute_names.all? { |name| column_methods_hash.include?(name.to_sym) }
         end
 
-        def attribute_condition(argument)
+        def attribute_condition(quoted_column_name, argument)
           case argument
-            when nil   then "IS ?"
-            when Array, ActiveRecord::Associations::AssociationCollection, ActiveRecord::NamedScope::Scope then "IN (?)"
-            when Range then "BETWEEN ? AND ?"
-            else            "= ?"
+            when nil   then "#{quoted_column_name} IS ?"
+            when Array, ActiveRecord::Associations::AssociationCollection, ActiveRecord::NamedScope::Scope then "#{quoted_column_name} IN (?)"
+            when Range then if argument.exclude_end?
+                              "#{quoted_column_name} >= ? AND #{quoted_column_name} < ?"
+                            else
+                              "#{quoted_column_name} BETWEEN ? AND ?"
+                            end
+            else            "#{quoted_column_name} = ?"
           end
         end
 
@@ -2307,7 +2311,7 @@ def sanitize_sql_hash_for_conditions(attrs, table_name = quoted_table_name)
                 table_name = connection.quote_table_name(table_name)
               end
 
-              "#{table_name}.#{connection.quote_column_name(attr)} #{attribute_condition(value)}"
+              attribute_condition("#{table_name}.#{connection.quote_column_name(attr)}", value)
             else
               sanitize_sql_hash_for_conditions(value, connection.quote_table_name(attr.to_s))
             end

activerecord/lib/active_record/validations.rb

@@ -744,7 +744,7 @@ def validates_uniqueness_of(*attr_names)
           if scope = configuration[:scope]
             Array(scope).map do |scope_item|
               scope_value = record.send(scope_item)
-              condition_sql << " AND #{record.class.quoted_table_name}.#{scope_item} #{attribute_condition(scope_value)}"
+              condition_sql << " AND " << attribute_condition("#{record.class.quoted_table_name}.#{scope_item}", scope_value)
               condition_params << scope_value
             end
           end

activerecord/test/cases/finder_test.rb

@@ -307,6 +307,12 @@ def test_find_on_hash_conditions_with_range
     assert_raises(ActiveRecord::RecordNotFound) { Topic.find(1, :conditions => { :id => 2..3 }) }
   end
 
+  def test_find_on_hash_conditions_with_end_exclusive_range
+    assert_equal [1,2,3], Topic.find(:all, :conditions => { :id => 1..3 }).map(&:id).sort
+    assert_equal [1,2], Topic.find(:all, :conditions => { :id => 1...3 }).map(&:id).sort
+    assert_raises(ActiveRecord::RecordNotFound) { Topic.find(3, :conditions => { :id => 2...3 }) }
+  end
+
   def test_find_on_hash_conditions_with_multiple_ranges
     assert_equal [1,2,3], Comment.find(:all, :conditions => { :id => 1..3, :post_id => 1..2 }).map(&:id).sort
     assert_equal [1], Comment.find(:all, :conditions => { :id => 1..1, :post_id => 1..10 }).map(&:id).sort