add awesome_print output for Operations::DropIndex

Author: 7even

lib/db_schema/awesome_print.rb

@@ -31,6 +31,8 @@ def cast_with_dbschema(object, type)
           :dbschema_alter_column_default
         when ::DbSchema::Operations::CreateIndex
           :dbschema_create_index
+        when ::DbSchema::Operations::DropIndex
+          :dbschema_drop_index
         when ::DbSchema::Operations::CreateCheckConstraint
           :dbschema_create_check_constraint
         when ::DbSchema::Operations::CreateForeignKey
@@ -109,6 +111,13 @@ def awesome_dbschema_create_index(object)
         "#<#{object.class} #{object.index.name.ai} on #{columns}#{using}#{data.join(', ')}>"
       end
 
+      def awesome_dbschema_drop_index(object)
+        data = [object.name.ai]
+        data << colorize('primary key', :nilclass) if object.primary?
+
+        "#<#{object.class} #{data.join(' ')}>"
+      end
+
       def awesome_dbschema_create_check_constraint(object)
         "#<#{object.class} #{object.check.name.ai} #{object.check.condition.ai}>"
       end