Schedule a Task action plugin does not actually support datetime fields but claims to

Problem/Motivation

Schedule a Task action plugin does not actually support datetime fields but claims to.

Datetime fields store their values as text, but the plugin expects them as integer (timestamps).

This issue causes scheduled tasks to be not editable (due to a PHP error), as well as not executable.

Proposed resolution

Add support for datetime fields.

Remaining tasks

Review a patch

User interface changes

No

API changes

No

Data model changes

No

Original report

Hi @yuriseki,

I have successfully created a scheduled task using the action: Schedule a task to delete a node with a specific nid.

However, when I visit /admin/config/workflow/business_rules/schedule/collection and try to edit this schedules task, I receive a FATAL ERROR on a dead white screen:

The website encountered an unexpected error. Please try again later.</br></br><em class="placeholder">InvalidArgumentException</em>: The timestamp must be numeric. in <em class="placeholder">Drupal\Component\Datetime\DateTimePlus::createFromTimestamp()</em> (line <em class="placeholder">198</em> of <em class="placeholder">core\lib\Drupal\Component\Datetime\DateTimePlus.php</em>). <pre class="backtrace">Drupal\business_rules\Form\ScheduleForm-&gt;buildForm(Array, Object)
call_user_func_array(Array, Array) (Line: 518)
Drupal\Core\Form\FormBuilder-&gt;retrieveForm(&#039;business_rules_schedule_edit_form&#039;, Object) (Line: 275)
Drupal\Core\Form\FormBuilder-&gt;buildForm(&#039;business_rules_schedule_edit_form&#039;, Object) (Line: 93)
Drupal\Core\Controller\FormController-&gt;getContentResult(Object, Object)
call_user_func_array(Array, Array) (Line: 123)
Drupal\Core\EventSubscriber\EarlyRenderingControllerWrapperSubscriber-&gt;Drupal\Core\EventSubscriber\{closure}() (Line: 582)
Drupal\Core\Render\Renderer-&gt;executeInRenderContext(Object, Object) (Line: 124)
Drupal\Core\EventSubscriber\EarlyRenderingControllerWrapperSubscriber-&gt;wrapControllerExecutionInRenderContext(Array, Array) (Line: 97)
Drupal\Core\EventSubscriber\EarlyRenderingControllerWrapperSubscriber-&gt;Drupal\Core\EventSubscriber\{closure}() (Line: 151)
Symfony\Component\HttpKernel\HttpKernel-&gt;handleRaw(Object, 1) (Line: 68)
Symfony\Component\HttpKernel\HttpKernel-&gt;handle(Object, 1, 1) (Line: 57)
Drupal\Core\StackMiddleware\Session-&gt;handle(Object, 1, 1) (Line: 47)
Drupal\Core\StackMiddleware\KernelPreHandle-&gt;handle(Object, 1, 1) (Line: 99)
Drupal\page_cache\StackMiddleware\PageCache-&gt;pass(Object, 1, 1) (Line: 78)
Drupal\page_cache\StackMiddleware\PageCache-&gt;handle(Object, 1, 1) (Line: 47)
Drupal\Core\StackMiddleware\ReverseProxyMiddleware-&gt;handle(Object, 1, 1) (Line: 52)
Drupal\Core\StackMiddleware\NegotiationMiddleware-&gt;handle(Object, 1, 1) (Line: 23)
Stack\StackedHttpKernel-&gt;handle(Object, 1, 1) (Line: 693)
Drupal\Core\DrupalKernel-&gt;handle(Object) (Line: 19)
</pre>

and in the dblog, the below error is logged:

InvalidArgumentException: The timestamp must be numeric. in Drupal\Component\Datetime\DateTimePlus::createFromTimestamp() (line 198 of S:\sites\dev.####\web\core\lib\Drupal\Component\Datetime\DateTimePlus.php).

My action: Schedule a task settings is as below:

Field: Created: Authored On [created]
Identifier: Delete the node nid: [node:nid] after 1 Year.
Time offset: 12
Time Unit: Months

Thank you,