dongyi1015 2018-02-05 03:41
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WordPress插件在使用wp_redirect时抛出警告

I am developing a plugin where user will submit a form. The form submits to the same page. Form data handling code is implemented by checking the condition-

if ( !empty( $_POST['action'] ) && $_POST['action'] == 'customer_add_new')

Then the data is validated and entered to database using $wpdb->insert.

After that, I want to pass a variable to the URL, so that success message can be displayed and user can be stopped from re-submitting the form by refreshing the page. For that, I used-

$url = add_query_arg( array(
    'customer_add_new' => 'success'
    ) );
wp_redirect( $url );
exit();

But this code is throwing the following error-

Warning: Cannot modify header information - headers already sent by (output started at E:\wamp\www\cp_plugin\wp-includes\class.wp-scripts.php:343) in E:\wamp\www\cp_plugin\wp-includes\pluggable.php on line 1216

I have successfully used the same code in the theme for this very same project. But the functionality was better suited for a plugin, than for a theme.

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  • douzhang1852 2018-02-05 07:49
    关注

    hook admin_post will help you. Works the same as admin-ajax.php.

    Change form action to <?php echo admin_url('admin-post.php'); ?> and create hooks:

    add_action( 'admin_post_{action}', 'funct' );
    add_action( 'admin_post_nopriv_{action}', 'funct' );
    
    function funct() {
        if ( wp_verify_nonce( 'some_nonce', 'some_action' ) ) {
            // Your code using $_POST
            // And create wp_redirect();
        }
    }
    

    This might help you.

    本回答被题主选为最佳回答 , 对您是否有帮助呢?
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