Add controllerAs and bindToController to ngDialog

[sibelius]

I think it is a good idea to add controllerAs and bindToController to allow us to follow the Angular Style Guide (https://github.com/johnpapa/angular-styleguide), that uses vm (ViewModel) instead of $scope

[maxklenk]

controllerAs is supported, even it is not documented.

[egor-smirnov]

Going to do it in near future.

[egor-smirnov]

Documentation about controllerAs - https://github.com/likeastore/ngDialog#controlleras-string
Documentation about bindToController - https://github.com/likeastore/ngDialog#directive

[alxvallejo]

@egor-smirnov Both of these imply that you're creating a new controller specifically for the modal. What if you just want to inherit the parent controller's scope using vm (not $scope) syntax? I've been trying to find a solution there but haven't yet.

[faceleg]

@alxvallejo it would be helpful if you could open another issue for the bindToController feature request.