Contrib.social

Call to a member function getDisplayName() on null

Open on Drupal.org →
Created on 27 March 2021, over 3 years ago
Updated 26 January 2023, almost 2 years ago

Problem/Motivation

On my website, when I go to the revisions for a node:
https://www.example.org/node/2959/revisions/view/38665/39409/split_fields

We get the following error

Call to a member function getDisplayName() on null
in Drupal\diff\DiffLayoutBase->buildRevisionData()
line 182 of modules/contrib/diff/src/DiffLayoutBase.php

The problem is that $revision->getRevisionUser() is returning null.

This is a probably a case of bad data on my site, but I attach my patch here in case someone finds it useful.

The fix is simply to do a check for null:

$revision_link['author'] = [
  '#type' => 'link',
  '#title' => ($revision_user = $revision->getRevisionUser()) ? $revision_user->getDisplayName() : '',
📌 Task
Status

RTBC

Version

1.0

Component

Code

Created by

🇩🇪Germany michaellenahan

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