Suppress Error Message before Meta-Box-Groups is Activated

This topic has 2 replies, 2 voices, and was last updated 8 years, 1 month ago by Anh Tran.

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March 31, 2016 at 10:54 PM #2635

pluginoven
Participant

I am including the meta-box-group plugin as part of our T(-) Countdown Event plugin, and we are using TGMPA to let users know that meta-box-group is a required plugin. However, between the time when our plugin and the meta-box-group plugin is activated, the system is throwing the following warnings:

Warning: call_user_func() expects parameter 1 to be a valid callback, class 'RWMB_Group_Field' not found in .../wp-content/plugins/meta-box/inc/meta-box.php on line 351
and
Warning: call_user_func() expects parameter 1 to be a valid callback, class 'RWMB__Field' not found in .../wp-content/plugins/meta-box/inc/meta-box.php on line 65

I understand why these warnings are being thrown.
I understand these will not be displayed if wp-debug is turned off.
I would just like to inquire about the best practices to avoid having these warnings thrown at all.

The first thing that comes to mind is to do a conditional check before registering the meta-box group files to ensure that the meta-box-group plugin is activated.

Another idea would be to only include the entire meta-box registration file if the meta-box-group plugin is activated.

Or maybe there is a flag that can be set when registering the meta_box grouped fields to suppress this message?

What are your thoughts on this?

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March 31, 2016 at 11:59 PM #2636
pluginoven
Participant
This is what I ended up doing:
I include the meta-box file only if the plugin is activated like so:
```
if ( is_plugin_active( 'tmeta-box-group/meta-box-group.php' ) ){
	include ('inc/config-meta-boxes.php');
}
```
NOTE: the folder is now tmeta-box-group (not sure when this changed) and NOT meta-box-group.

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April 1, 2016 at 1:24 PM #2639

Anh Tran
Keymaster

Hi,

I think you're doing correctly. However, I will think more about a better way to suppress the error. For now, all fields' classes are loaded by autoload and it makes us impossible to use class_exists.

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