Refactored create_migration on model generator.

Signed-off-by: Pratik Naik <pratiknaik@gmail.com>

railties/lib/generators/active_record/model/model_generator.rb

@@ -12,12 +12,8 @@ module ActiveRecord
       class_option :parent,     :type => :string, :desc => "The parent class for the generated model"
 
       def create_migration_file
-        if options[:migration] && options[:parent].nil?
-          klass_name = file_path.gsub(/\//, '_')
-          klass_name = klass_name.pluralize if ActiveRecord::Base.pluralize_table_names
-          file_name = "create_#{klass_name}"
-          migration_template "migration.rb", "db/migrate/#{file_name}.rb"
-        end
+        return unless options[:migration] && options[:parent].nil?
+        migration_template "migration.rb", "db/migrate/create_#{table_name}.rb"
       end
 
       def create_model_file

railties/lib/generators/named_base.rb

@@ -36,7 +36,7 @@ module Rails
             @class_name = "#{class_nesting}::#{class_name_without_nesting}"
           end
 
-          @table_name.gsub! '/', '_'
+          @table_name.gsub!('/', '_')
         end
 
         # Convert attributes hash into an array with GeneratedAttribute objects.