# File lib/active_record/connection_adapters/abstract/schema_statements.rb, line 564 def columns_for_remove(table_name, *column_names) column_names = column_names.flatten raise ArgumentError.new("You must specify at least one column name. Example: remove_column(:people, :first_name)") if column_names.blank? column_names.map {|column_name| quote_column_name(column_name) } end