A learning question for me on a friday afternoon. looking at conditions, specifically how the

Umb.Condition.WorkspaceAlias

condition works. and i have a 'whats going on here question' in the code: the constructor ( https://github.com/umbraco/Umbraco.CMS.Backoffice/blob/main/src/packages/core/workspace/conditions/workspace-alias.condition.ts#L15-L35) does this :

ts
constructor(host: UmbControllerHost, args: UmbConditionControllerArguments<WorkspaceAliasConditionConfig>) {
    super(host, args);

    let permissionCheck: ((context: UmbWorkspaceContext) => boolean) | undefined = undefined;
    if (this.config.match) {
      permissionCheck = (context: UmbWorkspaceContext) => context.workspaceAlias === this.config.match;
    } else if (this.config.oneOf) {
            permissionCheck = (context: UmbWorkspaceContext) => this.config.oneOf!.indexOf(context.workspaceAlias) !== -1;
}

what is this line doing !! 🤯

ts
permissionCheck = (context: UmbWorkspaceContext) => context.workspaceAlias === this.config.match

specifically where has

(context: UmbWorkspaceContext)

come from, i can't see anything injected into the class (or its base classes?) its like this code just 'magics' up the context. what is this - and is it something i should know more about ?

I could be wrong here Kevin, but I think permissionCheck is a function you call, and context is a parameter. Is there an example of calling permissionCheck() elsewhere in the code base?

yes... i think it is. i was just getting my head around that.

Oh I see write underneath they are using consumeContext 🙂 LOL

which means it is calling the permissionCheck methd.

I'm learning all of this too.

turns out its they only one written that way... it makes sense if you can decifer it, just a little odd and its all new 🙂