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PHP error when form has entity reference in Drupal 10.2.0

Open on Drupal.org →
Created on 18 December 2023, about 1 year ago
Updated 21 July 2024, 8 months ago

Problem/Motivation

When a node has an entity reference which allows multiple values a PHP error is thrown when the node create form is displayed. This was fine in Drupal 10.1.7 but fails in Drupal 10.2.0.

Error:

TypeError: strlen(): Argument #1 ($string) must be of type string, array given in strlen() (line 395 of /code/web/core/lib/Drupal/Component/Utility/Unicode.php).
<!--break-->
#0 /var/lib/tugboat/stm/web/core/lib/Drupal/Component/Utility/Unicode.php(395): strlen(Array)
#1 /var/lib/tugboat/stm/web/core/lib/Drupal/Component/Utility/Xss.php(65): Drupal\Component\Utility\Unicode::validateUtf8(Array)
#2 /var/lib/tugboat/stm/web/core/lib/Drupal/Core/Render/Renderer.php(829): Drupal\Component\Utility\Xss::filter(Array, Array)
#3 /var/lib/tugboat/stm/web/core/lib/Drupal/Core/Render/Renderer.php(427): Drupal\Core\Render\Renderer->ensureMarkupIsSafe(Array)
#4 /var/lib/tugboat/stm/web/core/lib/Drupal/Core/Render/Renderer.php(240): Drupal\Core\Render\Renderer->doRender(Array, false)
#5 /var/lib/tugboat/stm/web/core/lib/Drupal/Core/Template/TwigExtension.php(475): Drupal\Core\Render\Renderer->render(Array)
#6 /var/lib/tugboat/stm/web/sites/default/files/php/twig/657fb1296416e_table.html.twig_ZNK6eE18Qtv5NTjCJ09A_UAwu/6pezqUwoEcav3sCYQwIahtNpcsnsIr45c7ps28ugXQo.php(132): Drupal\Core\Template\TwigExtension->escapeFilter(Object(Drupal\Core\Template\TwigEnvironment), Array, 'html', NULL, true)
#7 /var/lib/tugboat/stm/vendor/twig/twig/src/Template.php(394): __TwigTemplate_5242cfb9459fe4f4a405164ed3106cd9->doDisplay(Array, Array)
#8 /var/lib/tugboat/stm/vendor/twig/twig/src/Template.php(367): Twig\Template->displayWithErrorHandling(Array, Array)
#9 /var/lib/tugboat/stm/vendor/twig/twig/src/Template.php(379): Twig\Template->display(Array)
#10 /var/lib/tugboat/stm/vendor/twig/twig/src/TemplateWrapper.php(38): Twig\Template->render(Array)
#11 /var/lib/tugboat/stm/web/core/themes/engines/twig/twig.engine(39): Twig\TemplateWrapper->render(Array)
#12 /var/lib/tugboat/stm/web/core/lib/Drupal/Core/Theme/ThemeManager.php(348): twig_render_template('themes/contrib/...', Array)
#13 /var/lib/tugboat/stm/web/core/lib/Drupal/Core/Render/Renderer.php(480): Drupal\Core\Theme\ThemeManager->render('table', Array)
#14 /var/lib/tugboat/stm/web/core/lib/Drupal/Core/Render/Renderer.php(240): Drupal\Core\Render\Renderer->doRender(Array, false)
#15 /var/lib/tugboat/stm/web/core/lib/Drupal/Core/Template/TwigExtension.php(475): Drupal\Core\Render\Renderer->render(Array)
#16 /var/lib/tugboat/stm/web/sites/default/files/php/twig/657fb1296416e_field-multiple-value-form_2b503Zb8dN0hT5YLOFgKgdfAq/rCqc4iaHq7l3nE2y3uf401VAXPei8guFGjhLWRiu5E8.php(44): Drupal\Core\Template\TwigExtension->escapeFilter(Object(Drupal\Core\Template\TwigEnvironment), Array, 'html', NULL, true)
#17 /var/lib/tugboat/stm/vendor/twig/twig/src/Template.php(394): __TwigTemplate_da57364eaa41b4e152231b7a02653a7d->doDisplay(Array, Array)
#18 /var/lib/tugboat/stm/vendor/twig/twig/src/Template.php(367): Twig\Template->displayWithErrorHandling(Array, Array)
#19 /var/lib/tugboat/stm/vendor/twig/twig/src/Template.php(379): Twig\Template->display(Array)
#20 /var/lib/tugboat/stm/vendor/twig/twig/src/TemplateWrapper.php(38): Twig\Template->render(Array)
#21 /var/lib/tugboat/stm/web/core/themes/engines/twig/twig.engine(39): Twig\TemplateWrapper->render(Array)
#22 /var/lib/tugboat/stm/web/core/lib/Drupal/Core/Theme/ThemeManager.php(348): twig_render_template('themes/contrib/...', Array)
#23 /var/lib/tugboat/stm/web/core/lib/Drupal/Core/Render/Renderer.php(480): Drupal\Core\Theme\ThemeManager->render('field_multiple_...', Array)
#24 /var/lib/tugboat/stm/web/core/lib/Drupal/Core/Render/Renderer.php(493): Drupal\Core\Render\Renderer->doRender(Array)
#25 /var/lib/tugboat/stm/web/core/lib/Drupal/Core/Render/Renderer.php(493): Drupal\Core\Render\Renderer->doRender(Array)
#26 /var/lib/tugboat/stm/web/core/lib/Drupal/Core/Render/Renderer.php(240): Drupal\Core\Render\Renderer->doRender(Array, false)
#27 /var/lib/tugboat/stm/web/core/lib/Drupal/Core/Render/MainContent/HtmlRenderer.php(238): Drupal\Core\Render\Renderer->render(Array, false)
#28 /var/lib/tugboat/stm/web/core/lib/Drupal/Core/Render/Renderer.php(627): Drupal\Core\Render\MainContent\HtmlRenderer->Drupal\Core\Render\MainContent\{closure}()
#29 /var/lib/tugboat/stm/web/core/lib/Drupal/Core/Render/MainContent/HtmlRenderer.php(239): Drupal\Core\Render\Renderer->executeInRenderContext(Object(Drupal\Core\Render\RenderContext), Object(Closure))
#30 /var/lib/tugboat/stm/web/core/lib/Drupal/Core/Render/MainContent/HtmlRenderer.php(128): Drupal\Core\Render\MainContent\HtmlRenderer->prepare(Array, Object(Symfony\Component\HttpFoundation\Request), Object(Drupal\Core\Routing\CurrentRouteMatch))
#31 /var/lib/tugboat/stm/web/core/lib/Drupal/Core/EventSubscriber/MainContentViewSubscriber.php(90): Drupal\Core\Render\MainContent\HtmlRenderer->renderResponse(Array, Object(Symfony\Component\HttpFoundation\Request), Object(Drupal\Core\Routing\CurrentRouteMatch))
#32 [internal function]: Drupal\Core\EventSubscriber\MainContentViewSubscriber->onViewRenderArray(Object(Symfony\Component\HttpKernel\Event\ViewEvent), 'kernel.view', Object(Drupal\Component\EventDispatcher\ContainerAwareEventDispatcher))
#33 /var/lib/tugboat/stm/web/core/lib/Drupal/Component/EventDispatcher/ContainerAwareEventDispatcher.php(111): call_user_func(Array, Object(Symfony\Component\HttpKernel\Event\ViewEvent), 'kernel.view', Object(Drupal\Component\EventDispatcher\ContainerAwareEventDispatcher))
#34 /var/lib/tugboat/stm/vendor/symfony/http-kernel/HttpKernel.php(186): Drupal\Component\EventDispatcher\ContainerAwareEventDispatcher->dispatch(Object(Symfony\Component\HttpKernel\Event\ViewEvent), 'kernel.view')
#35 /var/lib/tugboat/stm/vendor/symfony/http-kernel/HttpKernel.php(76): Symfony\Component\HttpKernel\HttpKernel->handleRaw(Object(Symfony\Component\HttpFoundation\Request), 1)
#36 /var/lib/tugboat/stm/web/core/lib/Drupal/Core/StackMiddleware/Session.php(58): Symfony\Component\HttpKernel\HttpKernel->handle(Object(Symfony\Component\HttpFoundation\Request), 1, true)
#37 /var/lib/tugboat/stm/web/core/lib/Drupal/Core/StackMiddleware/KernelPreHandle.php(48): Drupal\Core\StackMiddleware\Session->handle(Object(Symfony\Component\HttpFoundation\Request), 1, true)
#38 /var/lib/tugboat/stm/web/core/modules/page_cache/src/StackMiddleware/PageCache.php(106): Drupal\Core\StackMiddleware\KernelPreHandle->handle(Object(Symfony\Component\HttpFoundation\Request), 1, true)
#39 /var/lib/tugboat/stm/web/core/modules/page_cache/src/StackMiddleware/PageCache.php(85): Drupal\page_cache\StackMiddleware\PageCache->pass(Object(Symfony\Component\HttpFoundation\Request), 1, true)
#40 /var/lib/tugboat/stm/web/core/lib/Drupal/Core/StackMiddleware/ReverseProxyMiddleware.php(48): Drupal\page_cache\StackMiddleware\PageCache->handle(Object(Symfony\Component\HttpFoundation\Request), 1, true)
#41 /var/lib/tugboat/stm/web/core/lib/Drupal/Core/StackMiddleware/NegotiationMiddleware.php(51): Drupal\Core\StackMiddleware\ReverseProxyMiddleware->handle(Object(Symfony\Component\HttpFoundation\Request), 1, true)
#42 /var/lib/tugboat/stm/web/core/lib/Drupal/Core/StackMiddleware/AjaxPageState.php(36): Drupal\Core\StackMiddleware\NegotiationMiddleware->handle(Object(Symfony\Component\HttpFoundation\Request), 1, true)
#43 /var/lib/tugboat/stm/web/core/lib/Drupal/Core/StackMiddleware/StackedHttpKernel.php(51): Drupal\Core\StackMiddleware\AjaxPageState->handle(Object(Symfony\Component\HttpFoundation\Request), 1, true)
#44 /var/lib/tugboat/stm/web/core/lib/Drupal/Core/DrupalKernel.php(704): Drupal\Core\StackMiddleware\StackedHttpKernel->handle(Object(Symfony\Component\HttpFoundation\Request), 1, true)
#45 /var/lib/tugboat/stm/web/index.php(19): Drupal\Core\DrupalKernel->handle(Object(Symfony\Component\HttpFoundation\Request))
#46 {main}

Steps to reproduce

  1. Drupal 10.2.0 standard install profile with bootstrap 3.29.
  2. Ensure bootstrap theme active for creating content - either login as a non-admin user or disable Use the administration theme when editing or creating content at /admin/appearance.
  3. Edit the article structure to add a new field:
    1. Label = Users
    2. Field type = Reference
    3. Reference type = User
    4. Rest as default
  4. Add article content (/node/add/article) - page loads OK.
  5. Go back to the Users field settings and set the Allowed number of values to a value > 1 or Unlimited.
  6. Add article content (/node/add/article) - page fails to load and PHP error is observed in log.

Proposed resolution

The problem as I understand it is there are some fields which have no heading but the theme expects one in /templates/system/table.html.twig. By checking for a suitable value the problem is resolved:

89c89,91
<         {{- cell.content -}}
---
>         {% if cell.content['#value'] or (cell.content['#markup']) %}
>           {{- cell.content -}}
>         {% endif %}

However the standard Claro theme has no problem and has the same twig above so there must be somewhere else that's setting a value (empty string).

🐛 Bug report
Status

Fixed

Version

3.0

Component

Code

Created by

gaddman

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