Why is my promise not running synchronously?

Question

Have looked around and can\'t quite find the answer. I am trying to run a promise which executes a fulfil statement once all facebook api pages have been iterated through and sa

Answer 1

You need to fullfil/resolve the value that you need from promise. Call the function fulfill with a value you that you need.For example if you want to resolve an array:

fullfill(array);

Answer 2

Here might be one way to do it since you are using get call, I've modified to not use promise at all because ajax returns the promise anyway.

It is a pseudo code, you might have to tweak it a bit to get it running

function pageThroughLikes(facebookPostArray) {
  var testArray = []
  var promsieList = []
    facebookPostArray.forEach(function(array) {
      array.forEach(function(innerObject) {
        if ('likes' in innerObject) {
          if ('paging' in innerObject.likes) {
            if ('next' in innerObject.likes.paging) {
              nextPage = innerObject.likes.paging.next;
              currentPostId = innerObject.id;
              currentDataLength = innerObject.likes.data.length;
              i = 0;
              do{
                promsieList.push(
                $.ajax({url : nextPage                  
                }))
                i += 1;
                } while (currentDataLength != 0 && i > 10)
              }
           }
         }
      })
   });
   console.log('paged through likes')
   return promiseList();    
}

processData = function(nextLikePageData){
    likeData = {};
                  likeData.id = currentPostId;
                  likeData.likes = {};
                  likeData.likes.data = nextLikePageData.data
                  likeData.likes.paging = nextLikePageData.paging
                  console.log(likeData)
                  testArray.push(likeData);
                  facebookPostArray.push(testArray);
                  console.log('pushed to postArray')
  return likeData;
}

$(document).ready(function() {
  getPostLikes().then(function() {
  $.when.apply(this, pageThroughLikes(postArray)).done(function() {
    //debug to examine the arguments object, you'll notice its an array of arrays
    var testArray = []
    $.each(arguments, function(k, v){
        var dt = processData(v[0]);
        testArray.push(dt);
        facebookPostArray.push(dt);         
    });
    console.log(testArray)
    test(testArray); // OR
    test(facebookPostArray);
   });
 });
});

function test(postArray) {
  var convertedPostCSV = convertArrayOfObjectsToCSV(postArray);
  downloadCSV(convertedPostCSV);
}

EDIT:

• The arguments is a default object returned by the jquery $.when function.
• This is a collection of subarrays and each subarray consists of data, status & promise object.
• I'm assuming that you need to consolidate the data from all the get calls into a testArray so, that is what is being done in the when call