CODEWITHSUNDEEP
phpwordpresswoocommercecheckoutsanitization
t0r
t0r

Reputation: 229

Sanitize custom checkout fields data in WooCommerce

Following the WooCommerce checkout fields customization docs:
Customizing checkout fields using actions and filters

I have added a custom field to woocommerce checkout page, through functions.php.

I'm worried if I have to sanitize user input for that custom field?

I think it doesn't need sanitization since it's passed into billing fields as in: $fields['billing'], is that correct?

If not how do I sanitize this custom field?

Creating this custom field is meant to accept text strings(latin) and integers combined no longer than 50 in length.

// Hook in
add_filter( 'woocommerce_checkout_fields' , 'custom_override_checkout_fields' );

// Our hooked in function - $fields is passed via the filter!
function custom_override_checkout_fields( $fields ) {

//Adding custom text field  
 $fields['billing']['billing_username'] = array(
'type' => 'text',
'label'     => __('Your Username', 'woocommerce'),
'placeholder'   => _x('', 'placeholder', 'woocommerce'),
'required'  => true,
'class'     => array('form-row-first'),
'clear'     => true
 );

 return $fields;
}

Upvotes: 4

Views: 1298

Answers (1)

LoicTheAztec
LoicTheAztec

Reputation: 253978

If you look to the related Official Documentation linked in your question, you've got this snippet:

/**
 * Update the order meta with field value
 */
add_action( 'woocommerce_checkout_update_order_meta', 'my_custom_checkout_field_update_order_meta' );

function my_custom_checkout_field_update_order_meta( $order_id ) {
    if ( ! empty( $_POST['my_field_name'] ) ) {
        update_post_meta( $order_id, 'My Field', sanitize_text_field( $_POST['my_field_name'] ) );
    }
}

In your case you don't need that as address fields are already processed by Woocommerce.

For custom special fields: The answer is yes (which is not your case)

As you can see in this code they use sanitize_text_field() WordPress function, when saving the submitted data to database with update_post_meta() function…

This is only for custom checkout fields and not for existing checkout fields, that already get their own process…

Upvotes: 5

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