This method is only available on newer versions. The first available version (v2.1.0) is shown here.
remove(*column_names)
Removes the column(s) from the table definition.
t.remove(:qualification) t.remove(:qualification, :experience)
# File activerecord/lib/active_record/connection_adapters/abstract/schema_definitions.rb, line 563 def remove(*column_names) @base.remove_column(@table_name, column_names) end
