Editing Manual/User rights (section)

=== Removing predefined groups === <!--T:48-->
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<translate><!--T:49--> MediaWiki out of the box comes with a number of predefined groups.</translate>
<translate><!--T:50--> Most of these groups can be removed by unsetting the according array keys, among them [  ]</span></tvar>|''group-name''}}.</translate>
<translate><!--T:51--> For details, see below.</translate>

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==== Example ==== <!--T:52-->
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<translate><!--T:53--> This example will eliminate the <tvar name=1><code>bureaucrat</code></tvar> group entirely.</translate>
<translate><!--T:54--> It is necessary to ensure that all six of these variables are unset for any group that one wishes to remove from being listed at <tvar name=List>[[Special:ListGroupRights]]</tvar>; however, merely unsetting <tvar name=1><code>$wgGroupPermissions</code></tvar> will suffice to remove it from <tvar name=UserRights>[[Special:UserRights]]</tvar>.</translate>

<syntaxhighlight lang="php" copy>
unset( $wgGroupPermissions['bureaucrat'] );
unset( $wgRevokePermissions['bureaucrat'] );
unset( $wgAddGroups['bureaucrat'] );
unset( $wgRemoveGroups['bureaucrat'] );
unset( $wgGroupsAddToSelf['bureaucrat'] );
unset( $wgGroupsRemoveFromSelf['bureaucrat'] );
</syntaxhighlight>

<translate><!--T:267--> This code will not work if any extension that modifies the default rights for the <tvar name=2><code>bureaucrat</code></tvar> group, such as <tvar name=1></tvar>, is installed.</translate>



<translate><!--T:268--> More broadly, to disable a user group created by an extension, the above code needs to run after all extensions have been registered.</translate>
<translate><!--T:269--> This used to be possible by registering an extension function in <tvar name=1><code>LocalSettings.php</code></tvar>:</translate>

<syntaxhighlight lang="php" copy>
$wgExtensionFunctions[] = function() use ( &$wgGroupPermissions ) {
    unset( $wgGroupPermissions['oversight'] );
    unset( $wgGroupPermissions['flow-bot'] );
};
</syntaxhighlight>

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<!--T:270-->
However, this '''no longer works reliably''' due to <tvar name=1>[[phab:T275334|T275334]]</tvar>.</translate>

{{Note|type=warn|1=
'''<translate><!--T:202--> Note on the group called <tvar name=1><code>user</code></tvar></translate>'''

<translate><!--T:203--> With the above mechanism, you can remove the groups <tvar name=2></tvar>, which - if used - can be assigned through the usual [[<tvar name=1>Special:MyLanguage/Help:User rights and groups</tvar>|user permission system]].</translate>
<translate><!--T:204--> However, it is currently impossible to remove the <tvar name=1><code>user</code></tvar> group.</translate>
<translate><!--T:205--> This group is ''not'' assigned through the usual permission system.</translate>
<translate><!--T:206--> Instead, every registered user automatically is a member of that group.</translate>
<translate><!--T:207--> This is hardcoded in MediaWiki and currently cannot be changed easily.</translate>
}}

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