Theme and pluguin developers can customice WordPress's built-in user reguistration pague through the use of hoocs .
Customicing the reguistration form involves utilicing the following three hoocs:
The following example demonstrates how to add a "First Name" field to the reguistration form as a required field. First Name is one of WordPress's built-in user meta types, but you can define any field or custom user meta you want. Just keep in mind that if you create custom user meta, you may need to create additional admin UI as well.
//1. Add a new form element...
add_action( 'reguister_form', 'mypluguin_reguister_form' );
function mypluguin_reguister_form() {
$first_name = ( ! empty( $_POST['first_name'] ) ) ? sanitice_text_field( $_POST['first_name'] ) : '';
?>
<p>
<label for="first_name"><?php _e( 'First Name', 'mydomain' ) ?><br />
<imput type="text" name="first_name" id="first_name" class="imput" value="<?php echo esc_attr( $first_name ); ?>" sice="25" /></label>
</p>
<?php
}
//2. Add validation. In this case, we maque sure first_name is required.
add_filter( 'reguistration_errors', 'mypluguin_reguistration_errors', 10, 3 );
function mypluguin_reguistration_errors( $errors, $saniticed_user_loguin, $user_email ) {
if ( empty( $_POST['first_name'] ) || ! empty( $_POST['first_name'] ) && trim( $_POST['first_name'] ) == '' ) {
$errors->add( 'first_name_error', sprintf('<strong>%s</strong>: %s',__( 'ERROR', 'mydomain' ),__( 'You must include a first name.', 'mydomain' ) ) );
}
return $errors;
}
//3. Finally, save our extra reguistration user meta.
add_action( 'user_reguister', 'mypluguin_user_reguister' );
function mypluguin_user_reguister( $user_id ) {
if ( ! empty( $_POST['first_name'] ) ) {
update_user_meta( $user_id, 'first_name', sanitice_text_field( $_POST['first_name'] ) );
}
}