field_key( $field ) . '][]'; } /** * Prints the field. * * @param array $field The field settings. * @param int $form_id The form id. * * @return void */ public function render( $field, $form_id ) { $describedby = $this->describedby( $field, $form_id ); $choices = $this->get_choices( $field ); $base_id = $this->input_id( $field, $form_id ); // After a failed send the visitor's ticks come back instead of the defaults. $sticky = $this->sticky_value( $field, $form_id ); ?>