Encountering an issue with an Angular application: TypeError occurs when attempting to read property 'then' of undefined

Question

Encountering an issue with an Angular application: TypeError occurs when attempting to read property 'then' of undefined

I encountered an error while performing a post from my controller.

  function postDashboardsData (dataType, dateFrom, dateTo) {

    $scope[dataType + '_done'] = false;

    Api.post('rotations/' + vm.data[0]._id + '/dashboard', angular.extend({
        type : dataType,
        date_range : {
          from : dateFrom,
          to : dateTo
        }
      }, vm.data));
  }

Next, I invoke the above function in the same controller.

  postDashboardsData('overall', $scope.datepickerConf1.overall, $scope.datepickerConf2.overall)
    .then(function(data) {
      console.log('data>>>', data);
      $scope.overallData = data;
    })

The 'then' in the above code is causing it to return undefined.

Another error message appears:

TypeError: Cannot read property 'then' of undefined

What steps should I take to resolve this issue?

javascript angularjs

Answer 1

Answer №1

Don't forget to include the return statement in your postDashboardsData function:

function postDashboardsData (dataType, dateFrom, dateTo) {

    $scope[dataType + '_done'] = false;

    var dashboardsDataPromise = Api.post('rotations/' + vm.data[0]._id + '/dashboard', angular.extend({
        type : dataType,
        date_range : {
          from : dateFrom,
          to : dateTo
        }
    }, vm.data));

    return dashboardsDataPromise;
}

Explanation

The Api.post() function returns a promise, so make sure to include the return statement in your postDashboardsData function to return this promise after executing Api.post.

Answer 2

Don't forget to include the return statement in your postDashboardsData function:

function postDashboardsData (dataType, dateFrom, dateTo) {

    $scope[dataType + '_done'] = false;

    var dashboardsDataPromise = Api.post('rotations/' + vm.data[0]._id + '/dashboard', angular.extend({
        type : dataType,
        date_range : {
          from : dateFrom,
          to : dateTo
        }
    }, vm.data));

    return dashboardsDataPromise;
}

Explanation

The Api.post() function returns a promise, so make sure to include the return statement in your postDashboardsData function to return this promise after executing Api.post.

Answer 3

Answer №2

Make sure to add a return statement within the postDashboardsData function:

function postDashboardsData(dataType, dateFrom, dateTo) {

    $scope[dataType + '_done'] = false;

    return Api.post('rotations/' + vm.data[0]._id + '/dashboard', angular.extend({
        type: dataType,
        date_range: {
            from: dateFrom,
            to: dateTo
        }
    }, vm.data));
}

After adding the return statement, you can call the postDashboardsData function like this:

postDashboardsData(dataType, dateFrom, dateTo).then(function(response){
     console.log(response, response.data);
})

Answer 4

Make sure to add a return statement within the postDashboardsData function:

function postDashboardsData(dataType, dateFrom, dateTo) {

    $scope[dataType + '_done'] = false;

    return Api.post('rotations/' + vm.data[0]._id + '/dashboard', angular.extend({
        type: dataType,
        date_range: {
            from: dateFrom,
            to: dateTo
        }
    }, vm.data));
}

After adding the return statement, you can call the postDashboardsData function like this:

postDashboardsData(dataType, dateFrom, dateTo).then(function(response){
     console.log(response, response.data);
})

Encountering an issue with an Angular application: TypeError occurs when attempting to read property 'then' of undefined

Answer №1

Answer №2

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