Can angular $q.all() achieve the same level of success as jQuery $.get()?

Question

Can angular $q.all() achieve the same level of success as jQuery $.get()?

Upon reviewing the jQuery documentation, I discovered the following:

$.get( "example.php", function() {
  alert( "success" );
})
  .done(function() {
    alert( "second success" ); <---
  })
  .fail(function() {
    alert( "error" );
  })
  .always(function() {
    alert( "finished" );
  });

Now, in my Angular controller, I have a requirement to execute a method after making multiple ajax calls. Here's an example of what I want to achieve:

 $q.all([
            $http.get(ROOT + "Lookup/GetStates"),
            $http.get(ROOT + "Lookup/GetCountries"),
            $http.get(ROOT + "Address/GetAddresses"),
        ]).then(function (results) {
            $scope.states = jQuery.parseJSON(results[0].data.data);
            $scope.country = jQuery.parseJSON(results[1].data.data);
            $scope.addresses = jQuery.parseJSON(results[3].data);
        });

Following the then execution, specifically (only after the then), I need to invoke a method called $scope.setupControls().

Is there a way to accomplish this?

javascript ajax angularjs http

Answer 1

Answer №1

Why was it not possible to accomplish this task:

   $q.all([
        $http.get(ROOT + "Lookup/GetStates"),
        $http.get(ROOT + "Lookup/GetCountries"),
        $http.get(ROOT + "Address/GetAddresses"),
    ]).then(function (results) {
        $scope.states = jQuery.parseJSON(results[0].data.data);
        $scope.country = jQuery.parseJSON(results[1].data.data);
        $scope.addresses = jQuery.parseJSON(results[2].data);
        $scope.setupControls();
    });

I believe there is no necessity for a second success. Let's keep it simple (and perhaps sexy?).

Answer 2

Why was it not possible to accomplish this task:

   $q.all([
        $http.get(ROOT + "Lookup/GetStates"),
        $http.get(ROOT + "Lookup/GetCountries"),
        $http.get(ROOT + "Address/GetAddresses"),
    ]).then(function (results) {
        $scope.states = jQuery.parseJSON(results[0].data.data);
        $scope.country = jQuery.parseJSON(results[1].data.data);
        $scope.addresses = jQuery.parseJSON(results[2].data);
        $scope.setupControls();
    });

I believe there is no necessity for a second success. Let's keep it simple (and perhaps sexy?).

Answer 3

Answer №2

Take a look at the following code snippet:

.finally(function() {
  // perform this action regardless of success or error
});

This code block executes after both success and error scenarios.

Here is the full code snippet:

$q.all([
        $http.get(ROOT + "Lookup/GetStates"),
        $http.get(ROOT + "Lookup/GetCountries"),
        $http.get(ROOT + "Address/GetAddresses"),
    ]).then(function (results) {
        $scope.states = jQuery.parseJSON(results[0].data.data);
        $scope.country = jQuery.parseJSON(results[1].data.data);
        $scope.addresses = jQuery.parseJSON(results[3].data);
    }).finally(function() { /* <-- Action performed here */
      // Perform this action on both error and success cases
    });

Answer 4

Take a look at the following code snippet:

.finally(function() {
  // perform this action regardless of success or error
});

This code block executes after both success and error scenarios.

Here is the full code snippet:

$q.all([
        $http.get(ROOT + "Lookup/GetStates"),
        $http.get(ROOT + "Lookup/GetCountries"),
        $http.get(ROOT + "Address/GetAddresses"),
    ]).then(function (results) {
        $scope.states = jQuery.parseJSON(results[0].data.data);
        $scope.country = jQuery.parseJSON(results[1].data.data);
        $scope.addresses = jQuery.parseJSON(results[3].data);
    }).finally(function() { /* <-- Action performed here */
      // Perform this action on both error and success cases
    });

Answer 5

Answer №3

When working with Angular, the $q service offers similar functionality to jQuery. More information can be found here.

An approach that comes to mind is as follows:

$http.get('parent request')
.then(function(win){
      // execute actions once everything is resolved
   },
   function(err){
      // handle errors
   },
   function(progress){
      // carry out tasks when a child request is resolved
   }
);

In this scenario, the "parent request" triggers multiple child requests. For each successfully resolved child request, you can utilize the .notify() method to update the parent request. It is also important to keep track of the status of all child requests, and once they are all resolved, call .resolve() to proceed with your desired actions (such as $scope.setupControls() in your specific case).

Answer 6

When working with Angular, the $q service offers similar functionality to jQuery. More information can be found here.

An approach that comes to mind is as follows:

$http.get('parent request')
.then(function(win){
      // execute actions once everything is resolved
   },
   function(err){
      // handle errors
   },
   function(progress){
      // carry out tasks when a child request is resolved
   }
);

In this scenario, the "parent request" triggers multiple child requests. For each successfully resolved child request, you can utilize the .notify() method to update the parent request. It is also important to keep track of the status of all child requests, and once they are all resolved, call .resolve() to proceed with your desired actions (such as $scope.setupControls() in your specific case).

Answer 7

Answer №4

It is possible to call the then method multiple times for chaining promises.

https://docs.angularjs.org/api/ng/service/$q

Creating a Chain of Promises By calling the then method of a promise, a new derived promise is returned, allowing for a chain of promises:

promiseB = promiseA.then(function(result) {
   return result + 1;
});

// promiseB will be resolved immediately after promiseA is resolved and its value
// will be the result of promiseA incremented by 1


$q.all([
        $http.get(ROOT + "Lookup/GetStates"),
        $http.get(ROOT + "Lookup/GetCountries"),
        $http.get(ROOT + "Address/GetAddresses"),
    ]).then(function (results) {
        $scope.states = jQuery.parseJSON(results[0].data.data);
        $scope.country = jQuery.parseJSON(results[1].data.data);
        $scope.addresses = jQuery.parseJSON(results[3].data);
    }).then(function (result) {
         //do something here
    }) ;

Answer 8

It is possible to call the then method multiple times for chaining promises.

https://docs.angularjs.org/api/ng/service/$q

Creating a Chain of Promises By calling the then method of a promise, a new derived promise is returned, allowing for a chain of promises:

promiseB = promiseA.then(function(result) {
   return result + 1;
});

// promiseB will be resolved immediately after promiseA is resolved and its value
// will be the result of promiseA incremented by 1


$q.all([
        $http.get(ROOT + "Lookup/GetStates"),
        $http.get(ROOT + "Lookup/GetCountries"),
        $http.get(ROOT + "Address/GetAddresses"),
    ]).then(function (results) {
        $scope.states = jQuery.parseJSON(results[0].data.data);
        $scope.country = jQuery.parseJSON(results[1].data.data);
        $scope.addresses = jQuery.parseJSON(results[3].data);
    }).then(function (result) {
         //do something here
    }) ;

Can angular $q.all() achieve the same level of success as jQuery $.get()?

Answer №1

Answer №2

Answer №3

Answer №4

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