Ionic 2 And Json Data Addition

I am working with Ionic 2 Storage to persist form data. I save the data like this: this.storage.set(key, JSON.stringify(formData)); And I retrieve and attempt to update the data l

Solution 1:

what this error means is that, there are no records for that key at this moment. So, you would have to do a check like this :

this.getReport(key).then((report) => {
  var objReport = [];//initialise empty Array
  if(report){ //if there is a record in that key location
     objReport = JSON.parse(report); //parse the record & overwrite objReport
  }
  objReport.push(data); //Now this push will happen regardless of report or not
  this.storage.set(pk, JSON.stringify(objReport));
});