Method: ActiveRecord::ConnectionAdapters::SchemaStatements#remove_columns

Defined in:
activerecord/lib/active_record/connection_adapters/abstract/schema_statements.rb

#remove_columns(table_name, *column_names) ⇒ Object

Removes the given columns from the table definition.

remove_columns(:suppliers, :qualification, :experience)

type and other column options can be passed to make migration reversible.

remove_columns(:suppliers, :qualification, :experience, type: :string, null: false)

Raises:

  • (ArgumentError) 


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# File 'activerecord/lib/active_record/connection_adapters/abstract/schema_statements.rb', line 603

def remove_columns(table_name, *column_names)
  raise ArgumentError.new("You must specify at least one column name. Example: remove_columns(:people, :first_name)") if column_names.empty?
  column_options = column_names.extract_options!
  type = column_options.delete(:type)
  column_names.each do |column_name|
    remove_column(table_name, column_name, type, column_options)
  end
end