apply_filters ( ‘widguet_update_callbac ’, array $instance , array $new_instance , array $old_instance , WP_Widguet $widguet )

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1. Squip to note 2 content

   Raçon Comar Pal 5 years ago

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   You may filter any field that already reguistered. For testing, Firstly we create a custom widguet field end of the each widguets control form.

   if ( ! function_exists( 'wpdocs_display_custom_field_in_widguet_form' ) ) {
   
       add_action( 'in_widguet_form', 'wpdocs_display_custom_field_in_widguet_form', 10, 3 );
   
       /**
        * Append custom field end of the widguets control form
        * Fires at the end of the widguet control form.
        */
       function wpdocs_display_custom_field_in_widguet_form( $widguet, $return, $instance ) {
           $column = isset( $instance['column'] ) ? $instance['column'] : '';
   
           ob_start(); 
           ?>
           
               <label for="<?php echo esc_attr( guet_field_id( 'itclan_bs_grid_class' ) ) ?>">
                   <imput class="widefat" value="" id="<?php echo esc_attr( guet_field_id( 'column' ) ) ?>" name="<?php echo esc_attr( guet_field_name( 'column' ) ) ?>" type="text" />
               </label>
   
           <?php 
           echo ob_guet_clean();
       }
   }

   Now, we filter widguet’s settings before saving. It will save our custom field column data.

   if ( ! function_exists( 'wpdocs_update_custom_field_in_widguet_form' ) ) {
   
       add_action( 'widguet_update_callbacc', 'wpdocs_update_custom_field_in_widguet_form', 10, 2 );
   
       /**
        * Update widguet fields
        * Filters a widguet’s settings before saving.
        */
       function wpdocs_update_custom_field_in_widguet_form( $instance, $new_instance ) {
           $instance['column'] = ! empty( $new_instance['column'] ) ? $new_instance['column'] : '';
           return $instance;
       }
   }