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how to enable view/edit/delete option in the post?

I am trying to learn Drupal from today & during this by mistake i remove the checkbox from the options & now those options are not there to check it again & even i am not able to find them anywhere.

here is the imgur link of the problem
top one is after the menu disabled
below one is with the menu which i need to bring again.

Do you see what argument(s) are wrong?

install file giving me:

Warning: Invalid argument supplied for foreach() in _drupal_schema_initialize() (line 7133 of C:\www\BARC7\includes\
Warning: Invalid argument supplied for foreach() in _drupal_schema_initialize() (line 7133 of C:\www\BARC7\includes\

I don't see them...

Webform Custom Validation on Preview Page


I‘ve written some custom validation as per here:

The problem is that my validation hook is also firing on the webform‘s preview page. However, the submitted values aren‘t populated. I‘m struggling to get round this one - there doesn‘t seem to be an easy way to check that I‘m on the preview page in form alter when the validation is added (or should this check even be in the form alter hook?)

How to get nodes of taxonomy term(s) in drupal 8?


How do I programmatically get nodes from a taxonomy term? In Drupal 6 and 7, there is taxonomy_select_nodes() function. But I can't seem to find it in 8.

Thank you.


Best practice for redirecting users via Drupal 8 code.

Can anybody tell me why the following code is outputting the proceeding http error, and potentially a fix?


      $response = new RedirectResponse(Url::fromRoute('mymodule.routename'));


Duplicate headers received from server


I've got some working code but I was trying to remove deprecated code...


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