require in directive DDO only causes an error if the DDO also includes a link function

[bborowin]

Repro: make a simple app w/this custom directive:

foo.directive('bar', function() {
  return {
    scope: false,
    require: 'your mom',
    template: '<span>foobar</span>',
    //link: function() {}
  };
});

Expected: compile pukes on require not matched
Actual: everything compiles fine

Related SO question is here

As far as I can tell, it's because the getController function is only called from pre and post, which doesn't happen when a link function is not specified in the DDO.

[Narretz]

Yeah, you are explicitly requiring the controller into your link function, not the presence of the parent to your directive. I wonder if it would would break many apps, did we tighten require to throw even without a link function?

Sidenote: I can see how this is confusing. I remember, when I first started with angular, I thought require was also a way to make sure a certain directive can only be nested inside another directive, even if the required directive didn't actually define a controller.

[bborowin]

Thanks! Added a pull request to update the docs: #11206