template_preprocess_node() not finding title [#2891989]

Title works as expected when enabled for a content type. After saving a node, or clearing cache while viewing a node, the following error is shown:

Notice: Undefined index: title in template_preprocess_node() (line 604 of core/modules/node/node.module).

template_preprocess_node(Array, 'node', Array) (Line: 287)
Drupal\Core\Theme\ThemeManager->render('node', Array) (Line: 435)
Drupal\Core\Render\Renderer->doRender(Array, ) (Line: 195)
Drupal\Core\Render\Renderer->render(Array, ) (Line: 226)
Drupal\Core\Render\MainContent\HtmlRenderer->Drupal\Core\Render\MainContent\{closure}() (Line: 574)
Drupal\Core\Render\Renderer->executeInRenderContext(Object, Object) (Line: 227)
Drupal\Core\Render\MainContent\HtmlRenderer->prepare(Array, Object, Object) (Line: 117)
Drupal\Core\Render\MainContent\HtmlRenderer->renderResponse(Array, Object, Object) (Line: 90)
Drupal\Core\EventSubscriber\MainContentViewSubscriber->onViewRenderArray(Object, 'kernel.view', Object) (Line: 111)
Drupal\Component\EventDispatcher\ContainerAwareEventDispatcher->dispatch('kernel.view', Object) (Line: 149)
Symfony\Component\HttpKernel\HttpKernel->handleRaw(Object, 1) (Line: 64)
Symfony\Component\HttpKernel\HttpKernel->handle(Object, 1, 1) (Line: 57)
Drupal\Core\StackMiddleware\Session->handle(Object, 1, 1) (Line: 47)
Drupal\Core\StackMiddleware\KernelPreHandle->handle(Object, 1, 1) (Line: 99)
Drupal\page_cache\StackMiddleware\PageCache->pass(Object, 1, 1) (Line: 78)
Drupal\page_cache\StackMiddleware\PageCache->handle(Object, 1, 1) (Line: 47)
Drupal\Core\StackMiddleware\ReverseProxyMiddleware->handle(Object, 1, 1) (Line: 50)
Drupal\Core\StackMiddleware\NegotiationMiddleware->handle(Object, 1, 1) (Line: 23)
Stack\StackedHttpKernel->handle(Object, 1, 1) (Line: 656)
Drupal\Core\DrupalKernel->handle(Object) (Line: 19)

It looks like template_preprocess_node() is missing the $variables['elements']['title'] even though there appears to be a section in title.module to deal with this.

Comments

Comment #1

3 July 2017 at 23:17

imclean created an issue. See original summary.

Comment #2

AdamPS CreditAttribution: AdamPS at AlbanyWeb commented 13 November 2017 at 19:36

If you look at the code for title_entity_prepare_view this function has an explanatory comment and code that should workaround the error that you are seeing.

The workaround worked for me, except when I enabled the D8.4 experimental "Field Layout" module. Are you using that or a similar module?

Comment #3

AdamPS CreditAttribution: AdamPS at AlbanyWeb commented 15 November 2017 at 12:27

Status:

Active

» Postponed (maintainer needs more info)

Comment #4

bserem CreditAttribution: bserem at zehnplus commented 29 November 2017 at 10:04

In my case, I use the field_layout module and I can verify that this problem exists.

Comment #5

kevineinarsson CreditAttribution: kevineinarsson as a volunteer commented 3 July 2018 at 12:30

I also came across this issue, and in my case it was because I missed to call the #pre_render:

I used node_view_multiple() and moved the individual nodes to where I wanted to render them. #pre_render is set on the render array itself and not on the node render arrays. Because of this I was missing a lot of variables in my render arrays. I assume setting the correct #pre_render on the nodes would solve it too.