AngularJS: Read route param from within controller

问题:

How can a parameter from an URL be read within an AngularJS controller?

Let's say I have an URL like http://localhost/var/:value and I want the value to be stored in a variable within the controller for the /var/:value URL.

I have tried using $routeParams.value and $route.current.params.value but $routeParams is undefined at the beginning and $route doesn't work.

回答1:

The problem is that you probably inject $routeParams or $route in a controller that is run before a route change has occurred, e.g. your main/master/page controller.

If you inject $routeParams in a controller for a specific route (specified by the controller property when you define the route), then it will work, otherwise you're probably better of listening to the various events the route service broadcasts.

Try to change your code to use

$scope.$on('$routeChangeSuccess', function (ev, current, prev) {
   // ... 
});

回答2:

Requirements: Ensure 'ngRoute' is in your app module

Route provider set up as: http://localhost/var/:valName

Function set up as:

function functionName($scope, $routeParams){$scope.value = $routeParams.valName;}

HTML view:

{{value['valName']}}