Why does my custom code show warnings in the logs? - php

Question

I have a site on Drupal 8.6 and Bootstrap 3.3.7
I created a custom module for the customer to accept the terms and conditions of the store when placing an order.
This displays a link to a checkbox before payment to display the terms and conditions in a modal window.
When I place an order here are the warnings in the logs (sorry my code is too long to be published here):
https://pastebin.com/1p5m1Ved
https://pastebin.com/XYbqDJje
https://pastebin.com/P93bStKh
Here is the file that created the problem :
<?php
namespace Drupal\commerce_marketplace_terms_and_conditions\Plugin\Commerce\CheckoutPane;
use Drupal\Component\Serialization\Json;
use Drupal\Core\Form\FormStateInterface;
use Drupal\commerce_checkout\Plugin\Commerce\CheckoutPane\CheckoutPaneBase;
use Drupal\commerce_checkout\Plugin\Commerce\CheckoutPane\CheckoutPaneInterface;
use Drupal\Core\Link;
use Drupal\Core\Url;
/**
* Provides the completion message pane.
*
* #CommerceCheckoutPane(
* id = "marketplace_terms_and_conditions",
* label = #Translation("Marketplace Terms and Conditions"),
* default_step = "review",
* )
*/
class MarketplaceTermsAndConditions extends CheckoutPaneBase implements CheckoutPaneInterface {
/**
* {#inheritdoc}
*/
public function buildPaneForm(array $pane_form, FormStateInterface $form_state, array &$complete_form) {
$store_name = $this->order->getStore()->getName();
$store_id = $this->order->getStoreId();
$pane_form['#attached']['library'][] = 'core/drupal.dialog.ajax';
$attributes = [
'attributes' => [
'class' => 'use-ajax',
'data-dialog-type' => 'modal',
'data-dialog-options' => Json::encode([
'width' => auto
]),
],
];
$link = Link::fromTextAndUrl(
$this->t('terms and conditions of the store "#store_name"', ['#store_name' => $store_name]),
Url::fromUri("internal:/store/$store_id/cgv", $attributes)
)->toString();
$pane_form['marketplace_terms_and_conditions'] = [
'#type' => 'checkbox',
'#default_value' => FALSE,
'#title' => $this->t('I have read and accept #terms.', ['#terms' => $link]),
'#required' => TRUE,
'#weight' => $this->getWeight(),
];
return $pane_form;
}
}
What's wrong with my custom module and how to fix the problem ? Thank you

Answer 1

Change this to
'width' => auto
this
'width' => 'auto'
It is assuming it to be a constant, as you can see from the errors, it has to be either a variable or a string.