This function will make a validation for nicename field so users can only have a unique nicename.
wppb_check_form_field_default-display-name-publicly-as is located in Profile Builder: /front-end/default-fields/display-name/display-name.php
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 | /* * Unique nicename for users. */ function wppbc_unique_display_name( $message, $field, $request_data, $form_location ){ if ( isset( $request_data['display_name']) ) { global $wpdb; $count = $wpdb->get_var( $wpdb->prepare( "SELECT COUNT(ID) FROM $wpdb->users WHERE display_name = %s", $request_data['display_name'] ) ); if ( $count > 1 ) return __( 'This display name is already in use. Choose another one.', 'profile-builder' ); } return $message; } add_filter( 'wppb_check_form_field_default-display-name-publicly-as', 'wppbc_unique_display_name', 20, 4 ); |
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