Creating and deleting permission settings

[GuruMeditation]

Hi,

I'm trying to work out how to create new permissions, and also to check for them before installation. I can't seem to find any info on how to do this. So far I have the following code to create a new permission:

$pm = new Permission();
$pm->name = 'new-permission';
$pm->title = 'A test permission?';
$pm = $pm->save();

Not sure if that's the right way to do it? Now to check if the permission already exists before installation, I use the following but it's returning true even when the permission doesn't exist.

if($this->permissions->get('new-permission'))
throw new WireException("The 'Permission already exists");

I know I'm probably doesn't something stupid, but I have no code to reference for this.

[Martijn Geerts]

I suspect that the permission returns an object (NullPage). So your if statement will be:
 

if (object) {} // returns always true

I guess that if you append ->id to your if statement, the outcome will be the integer 0 and thus false.
 

if($this->permissions->get('new-permission')->id) {
    // higher then 0, the permission (Page) does exists.
} else {
    // 0 If not exists, the ID comes from the NullPage
}

ps, I didn't checked what I typed here (not on my working machine right now)

[GuruMeditation]

Thanks, that seems to work.