Angular JS function is returning before the completion of the http.get request

Question

Angular JS function is returning before the completion of the http.get request

I'm encountering an issue where this block of code is returning before it has received all the necessary information. Here's my current implementation:

function (){
   ....
  var promise = $http.get(...)
  promise.then (...){
     //get info needed to return promise
  }
 return promise
}

The problem is that it's returning before the promise.then function is fully executed. Any ideas on how I could resolve this?

javascript angularjs http

Answer 1

Answer №1

When your promise is returned, it indicates that the request is still in progress. To access the data, you need to return it within the 'then' block:

function (){
   ....
  var promise = $http.get(...)
  promise.then (...){
     //retrieve necessary information to return the promise
     return data;
  }
}

Alternatively, you can simplify this by just using:

function getSomething(){
   ....
  return $http.get(...)
}

Then, when calling the above function on the page, handle the promise like this:

  getSomething().then (...){
     //this will run once the response is received
  }

I hope this explanation clarifies things for you.

Answer 2

When your promise is returned, it indicates that the request is still in progress. To access the data, you need to return it within the 'then' block:

function (){
   ....
  var promise = $http.get(...)
  promise.then (...){
     //retrieve necessary information to return the promise
     return data;
  }
}

Alternatively, you can simplify this by just using:

function getSomething(){
   ....
  return $http.get(...)
}

Then, when calling the above function on the page, handle the promise like this:

  getSomething().then (...){
     //this will run once the response is received
  }

I hope this explanation clarifies things for you.

Answer 3

Answer №2

That is how the concept of promises operates - your function is immediately returned, and you can add a callback to it using .then

function anotherFunction() {
   return $ajax
     .fetch(...)
     .then(function() { 
        ... 
       return result; 
      });
}

anotherFunction()
   .then(function(result) { 
      /* code to run after the promise.then() within anotherFunction */ 
   });

Answer 4

That is how the concept of promises operates - your function is immediately returned, and you can add a callback to it using .then

function anotherFunction() {
   return $ajax
     .fetch(...)
     .then(function() { 
        ... 
       return result; 
      });
}

anotherFunction()
   .then(function(result) { 
      /* code to run after the promise.then() within anotherFunction */ 
   });

Angular JS function is returning before the completion of the http.get request

Answer №1

Answer №2

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