`Can controllers be included in route or template definitions?`

When it comes to defining a route with a template, there are two main ways to set the controller for the view:

  • In the route: 

    $routeProvider
.when('/phone/:phoneId', {
     controller: 'PhoneDetailController',
     templateUrl: 'phone.detail.html',
     }
});

  • In the template: 

    $routeProvider
.when('/phone/:phoneId', {
     templateUrl: 'phone.detail.html',
     }
});

    <div ng-controller="PhoneDetailController">
  <!-- [...] -->
</div>

What are the distinctions between these methods, which one is the preferred choice, and what are the reasons behind that recommendation?

javascriptangularjsroutes

Answer №1

Upon examination of the ui-router source code in viewDirective.js, one can observe how the controller is instantiated:

if (locals.$$controller) {
    locals.$scope = scope;
    locals.$element = $element;
    var controller = $controller(locals.$$controller, locals);
    if (locals.$$controllerAs) {
        scope[locals.$$controllerAs] = controller;
    }
    $element.data('$ngControllerController', controller);
    $element.children().data('$ngControllerController', controller);
}

In essence, both options will achieve the same result. The decision on which method to use ultimately lies with you and your preference for semantics. Personally, I opt to define my controller names within the state definition to maintain a view-oriented and reusable template structure. This approach also aligns with common practices, making it easier for others to comprehend your code.

Answer №2

In my opinion, I prefer the initial version due to its more robust and centralized setup. While there may not be a significant distinction, as mentioned in Filype's comment, Version 2 does not appear as frequently.

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