如何验证woocommerce注册表单的同意条款复选框？

Question

I have stmbled into a bit of a problem with the woocommerce registration form. I wanted to add a agree to the terms checkbox that would actually work.

I added the code that shows the checkbox in form-login.php (from the templates/my account folder).

I tried to modify the code in wc-user-functions.php and class-wc-form-handler.php from includes folder and now it does not recognize when the user checks the box. It gives me the Please accept terms error every time regardless if i check the box or not.

Does anyone know where is my mistake?

form-login.php added code

<p class="form-row form-row-wide">
            <label for="accept_terms" class="inline"><span class="required"></span></label>
            <input name="accept_terms" type="checkbox" id="accept_terms" value="empty";/> 
            <?php _e( 'Am citit si sunt de acord cu' ); ?> <a href="<?php echo "http://................." ?>"><?php _e( 'termenii si conditiile', 'woocommerce' ); ?></a>
        </p>

wc-user-functions.php added code

// Check the accept terms
if ( empty( $accept_terms ) )  {
    return new WP_Error( 'registration-error-accept-terms', __( 'Please accept terms', 'woocommerce' ) );
} 

wc-class-form-handler.php modified code

public static function process_registration() {
    if ( ! empty( $_POST['register'] ) && isset( $_POST['_wpnonce'] ) && wp_verify_nonce( $_POST['_wpnonce'], 'woocommerce-register' ) ) {
        $username = 'no' === get_option( 'woocommerce_registration_generate_username' ) ? $_POST['username'] : '';
        $password = 'no' === get_option( 'woocommerce_registration_generate_password' ) ? $_POST['password'] : '';
        $email    = $_POST['email'];
    $accept_terms = $_POST['accept_terms'];

        try {
            $validation_error = new WP_Error();
            $validation_error = apply_filters( 'woocommerce_process_registration_errors', $validation_error, $username, $password, $email, $accept_terms);

            if ( $validation_error->get_error_code() ) {
                throw new Exception( $validation_error->get_error_message() );
            }

            // Anti-spam trap
            if ( ! empty( $_POST['email_2'] ) ) {
                throw new Exception( __( 'Anti-spam field was filled in.', 'woocommerce' ) );
            }

            $new_customer = wc_create_new_customer( sanitize_email( $email ), wc_clean( $username ), $password);

            if ( is_wp_error( $new_customer ) ) {
                throw new Exception( $new_customer->get_error_message() );
            }

            if ( apply_filters( 'woocommerce_registration_auth_new_customer', true, $new_customer ) ) {
                wc_set_customer_auth_cookie( $new_customer );
            }

            wp_safe_redirect( apply_filters( 'woocommerce_registration_redirect', wp_get_referer() ? wp_get_referer() : wc_get_page_permalink( 'myaccount' ) ) );
            exit;

        } catch ( Exception $e ) {
            wc_add_notice( '<strong>' . __( 'Error', 'woocommerce' ) . ':</strong> ' . $e->getMessage(), 'error' );
        }
    }
}

Any help would be greatly appreciated!

Answer 1

First, you should not edit core WooCommerce files. You will lock yourself into the code and never be able to update, which is bad. And there's really no need and WooCommerce is littered with hooks and filters which permit you to make modifications from your own themes/plugins. The following should go in your theme's functions.php or preferably into its own custom plugin.

This first part will add the terms checkbox. If you wish to show the exact same terms field as on the checkout page, then you can just use the same template.

function so_33122634_add_field_to_registration(){
    wc_get_template( 'checkout/terms.php' );
}
add_action( 'woocommerce_register_form', 'so_33122634_add_field_to_registration' );

Then on the woocommerce_process_registration_errors we can check the $_POST and throw exceptions if it isn't there. WooCommerce will collect all the exceptions and show the appropriate error messages.

function so_33122634_validation_registration( $errors, $username, $password, $email ){
    if ( empty( $_POST['terms'] ) ) {
        throw new Exception( __( 'You must accept the terms and conditions in order to register.', 'text-domain' ) );
    }
    return $errors;
}
add_action( 'woocommerce_process_registration_errors', 'so_33122634_validation_registration', 10, 4 );