Check on user ID is null throws error - Meta Box

This topic has 2 replies, 2 voices, and was last updated 2 years, 4 months ago by Arno.

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July 15, 2022 at 1:21 AM #37016
Arno
Participant
Hello,

I have this in my view:
```
{% if (user.ID is null) %}
	Anonymous, throwing error

{% else %}
	Logged on

{% endif %}
```
When no user is logged in, it shows the text but it also throws this error in the frontend: "Warning: array_merge(): Expected parameter 2 to be an array, null given in /home/user/example.com/wp-content/plugins/meta-box-aio/vendor/meta-box/mb-views/src/Renderer/User.php on line 15".

There is no error if a user is logged on.

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July 15, 2022 at 8:36 PM #37030
Long Nguyen
Moderator
Hi,

The error is displayed because if the user is not logged in, there is no property ID. If you want to check the user logged in, please use the WordPress function is_user_logged_in(). For example
```
{% if( mb.is_user_logged_in() ) %}
Logged in
{% else %}
Guest
{% endif %}
```
Read more on the documentation https://developer.wordpress.org/reference/functions/is_user_logged_in/

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July 15, 2022 at 9:10 PM #37033

Arno
Participant

Thank you, that works great!

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