Field::isset_value()

Method: Check if request value is set.

Field::value()

Method: Get value of a field.

Field::field_wrap_start()

Method: Field wrapper start.

Field::field_wrap_end()

Method: Field wrapper end.

Field::label()

Method: Output label of field.

Field::have_errors()

Method: Check if field have any errors.

Field::add_error()

Method: Add error message to a field.

Field::errors()

Method: Output label of field.

Radio::prepare()

Method: Prepare field.

Radio::field_markup()

Method: Field markup.