Trigger $q manually in AngularJS

My understanding of $q in AngularJS is that it runs every time I refresh my page, similar to using a function in ng-init.

Here is the code for $q.all that I have:

$q.all([$scope.getCart(), $scope.getCategory(), $scope.getMenu(), $scope.getRestaurant()]).then(function(data){
    $scope.cart = data[0].cart;
    $scope.cartItems = data[0].cartItems;
    $scope.delDay = data[0].delDay;
    $scope.delTime = data[0].delTime;
    $scope.cat = data[1];
    $scope.itemData = data[2];
    $scope.rest = data[3];
});

Each time I refresh the page, these functions are called and the data is added to my $scope. This behavior is as expected.

I am now wondering how I can manually invoke $q from another function like this:

$scope.notEnoughTime = function () {
   if (year = 2015) {
    // need to manually trigger $q here 
    // to call all the functions and update the scope data
   }
}

Answer №1

In line with what @Scott suggested, it's possible to encapsulate the call within a function. By placing the request inside a function, you have the flexibility to invoke the function at any point.

var initiateServerRequest = function() {
    $q.all()
}

$scope.checkIfTimeIsSufficient = function() {
   if (year === 2015) {
      initiateServerRequest();
    }
}

// To trigger the request when the controller is initialized, simply include the function call in your controller code

initiateServerRequest();

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