Use Kernel.binding rather than binding to allow columns of that name. References #2973.

git-svn-id: http://svn-commit.rubyonrails.org/rails/trunk@3139 5ecf4fe2-1ee6-0310-87b1-e25e094e27de

activerecord/CHANGELOG

@@ -1,5 +1,7 @@
 *SVN*
 
+* Use Kernel.binding rather than binding to allow columns of that name.  #2973 [arc@uchicago.edu]
+
 * Add tasks to create, drop and rebuild the MySQL and PostgreSQL test  databases. [Marcel Molina Jr.]
 
 * Correct boolean handling in generated reader methods.  #2945 [don.park@gmail.com, Stefan Kaes]

activerecord/lib/active_record/callbacks.rb

@@ -332,7 +332,7 @@ module ActiveRecord
             when Symbol
               self.send(callback)
             when String
-              eval(callback, binding)
+              eval(callback, Kernel.binding)
             when Proc, Method
               callback.call(self)
             else

activerecord/lib/active_record/validations.rb

@@ -254,7 +254,7 @@ module ActiveRecord
       def evaluate_condition(condition, record)
         case condition
           when Symbol: record.send(condition)
-          when String: eval(condition, binding)
+          when String: eval(condition, Kernel.binding)
           else
             if condition_block?(condition)
               condition.call(record)
@@ -764,7 +764,7 @@ module ActiveRecord
           if validation.is_a?(Symbol)
             self.send(validation)
           elsif validation.is_a?(String)
-            eval(validation, binding)
+            eval(validation, Kernel.binding)
           elsif validation_block?(validation)
             validation.call(self)
           elsif validation_class?(validation, validation_method)