AngularJS : Adding variable into a chain of promises

Question

I am learning promises and am struggling with the following.

Three functions are being run in this case.

//returns an search query in JSON format
filterSearch() 

  // searches Parse.com and returns an array of values
  .then(performSearch)

  // I am passing the array of values to exerciseSearch and a another value (term - string)
  .then(function(result) {
     exerciseSearch(result, term);
     })

  // The results from the search is displayed in scope. 
  .then(function(exercises) {
     $scope.allExercises = exercises;

  }, function(error) {
     console.log('error');
});

You probably meant return exerciseSearch(result, term)

Bergi
– Bergi

2015-07-07 22:54:08 +00:00
Commented Jul 7, 2015 at 22:54 — Bergi
– Bergi, Commented Jul 7, 2015 at 22:54

Pankaj Parkar · Accepted Answer · 2015-07-08 09:46:12Z

3

Promise chain should always have return object from .then to continue the promise chain

//returns an search query in JSON format
filterSearch() 

  // searches Parse.com and returns an array of values
  .then(performSearch)

  //(term - string)
  .then(function(result) {
       return exerciseSearch(result, term); //exerciseSearch should return exercises from fn
     })

  // The results from the search is displayed in scope. 
  .then(function(exercises) {
     $scope.allExercises = exercises;
     return exercises;
  }, function(error) {
     console.log('error');
});

edited Jul 8, 2015 at 9:46

answered Jul 7, 2015 at 20:37

Pankaj Parkar

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2 Comments

Bergi Over a year ago

Are you sure that the result you're passing on is the one from the right search?

Pankaj Parkar Over a year ago

@Bergi you are correct..he should return the object which is been created in exerciseSearch..Thanks for heads up..let me update an answer

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