How to push a JSON object to an array in AngularJS

Question

I need to push a JSON object to AngularJS and need to check before if the value for one of the objects exist. I need to overwrite the data.

$scope.setData = function(survey, choice) {

  keepAllData.push({
    'surveyId': survey.id,
    'choiceId': choice.id
  });
  console.log(keepAllData);
  toArray(keepAllData);
  alert(JSON.stringify(toArray(keepAllData)));

  $scope.keepAllDatas.push({
    'surveyId': survey.id,
    'choiceId': choice.id
  });
  var items = ($filter('filter')(keepAllDatas, {
    surveyId: survey.id
  }));

}

function toArray(obj) {
  var result = [];
  for (var prop in obj) {
    var value = obj[prop];
    console.log(prop);
    if (typeof value === 'object') {
      result.push(toArray(value));

      console.log(result);
    } else {
      result.push(value);
      console.log(result);
    }
  }
  return result;
}

If the survey id exists in keepalldata, I need to change the recent value with choiceid. Is it possible to do with AngularJS?

check this http://stackoverflow.com/questions/14489860/[javascript-object-pushed-into-an-array] — Jagan C, Aug 01 '16 at 14:07

score 2 · Accepted Answer · edited Sep 03 '21 at 03:59

2

Try with this: Before pushing data you have to check if the survey id exists or not. If it exists you have to update choice with the corresponding survey id, otherwise you can push directly.

$scope.setData = function(survey, choice) {
  var item = $filter('filter')(keepAllData, {
    surveyId: survey.id
  });
  if (!item.length) {
    keepAllData.push({
      'surveyId': survey.id,
      'choiceId': choice.id
    });
  } else {
    item[0].choiceId = choice.id;
  }
  console.log(keepAllData);
}

Demo

edited Sep 03 '21 at 03:59

Peter Mortensen

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answered Aug 01 '16 at 15:36

Balachandran

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Thanks Balachandran, I have modified a few to remove the data if exist as well. – user3428736 Aug 02 '16 at 05:04
I did't get .do you want to update or remove if survey id is exist? – Balachandran Aug 03 '16 at 10:39
I just want to update the choice id alone for an existing survey id – user3428736 Aug 03 '16 at 12:38
Okay, I think the above code will work for you, Is not working ? or any issue? – Balachandran Aug 04 '16 at 09:19
1

Thanks Bala and the keepAllData is $scope.keepAllData – user3428736 Aug 04 '16 at 12:29

score 0 · Answer 2 · edited Sep 03 '21 at 03:57

 $scope.keepAllDatas = [];

 $scope.setData = function(survey, choice) {

     if($scope.keepAllDatas.length == 0) {
         $scope.keepAllDatas.push({'surveyId':survey.id,'choiceId':choice.id});
     }
     else {
         var items = ($filter('filter')( $scope.keepAllDatas, {surveyId: survey.id }));
         for (var i = items.length - 1; i >= 0; i--) {
             // alert(items[i].surveyId);
             if(items[i].surveyId == survey.id) {
                 console.log($scope.keepAllDatas.indexOf(survey.id));
                 $scope.keepAllDatas.splice($scope.keepAllDatas.indexOf(survey.id),1);
                 console.log("Removed data")
             }
         }

         $scope.keepAllDatas.push({'surveyId':survey.id, 'choiceId':choice.id});
         console.log( $scope.keepAllDatas)
         // alert(items[0].surveyId);
    }
}

How to push a JSON object to an array in AngularJS

2 Answers2