Hold tight for the response from the AngularJS factory request

Question

Hold tight for the response from the AngularJS factory request

In my Rails application, I am incorporating Angular. The code snippet below shows an API request being made and the code in the .run function being executed. Sometimes, the API response is still pending when the code is executed. This leads to issues with directives not loading properly as expected. For example, an ng-if directive may rely on certain data to be loaded, but if the data is unavailable, the messages may not be displayed.

}).factory('ApiDataCall', function ($resource) {
  return $resource('api_data/check_errors');

}).run(function ($rootScope, $timeout, $navigationWarning,$window, ApiDataCall) {

  ApiDataCall.get(function (data) {
    $rootScope.require_redirect = data;
  });

I am seeking advice on how to add a delay to ensure that the request is complete before proceeding. I have come across the use of $q.defer() and promise to potentially solve this issue, but I am unsure of the exact approach. Please let me know if you need additional information from my end.

javascript ruby-on-rails angularjs angularjs-directive

Answer 1

Answer №1

In order for ApiDataCall to return an Angular promise, you can follow this approach:

ApiDataCall.get(function (data) {
    $rootScope.require_redirect = data;
    }).then(function success(response) {
        //Implement code that relies on the completion of ApiDataCall.get() here
    }, function failure(response) {
       //Handle the scenario where the call fails
    }
);

One way to incorporate promises is by using $q. For example, you can have ApiDataCall.get return:

return $q.when({foo: "bar"});

for a successful outcome. And:

return $q.reject();

for an unsuccessful outcome. This approach ensures that the response object received by the corresponding functions in then() will be {foo: "bar"}

Answer 2

In order for ApiDataCall to return an Angular promise, you can follow this approach:

ApiDataCall.get(function (data) {
    $rootScope.require_redirect = data;
    }).then(function success(response) {
        //Implement code that relies on the completion of ApiDataCall.get() here
    }, function failure(response) {
       //Handle the scenario where the call fails
    }
);

One way to incorporate promises is by using $q. For example, you can have ApiDataCall.get return:

return $q.when({foo: "bar"});

for a successful outcome. And:

return $q.reject();

for an unsuccessful outcome. This approach ensures that the response object received by the corresponding functions in then() will be {foo: "bar"}

Hold tight for the response from the AngularJS factory request

Answer №1

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