Model binding in AngularJS can become broken if it is removed from the application

I'm currently working on an AngularJS application that is designed to generate multiple choice quizzes. The questions and corresponding choices are managed within the following model.

$scope.testFormChoiceCount = [
{question: '', choices: [
    {choice: ''},
    {choice: ''},
    {choice: ''}
  ]
},
{question: '', choices: [
    {choice: ''},
    {choice: ''},
    {choice: ''}
  ]
},
];

The issue I am facing: When I add a question, a new object is added to the model array. However, if I delete a question (such as the first one), the model binding breaks down, causing an error when trying to input data into the remaining questions.

Could it be that my ng-model binding is incorrect? Any assistance in solving this problem would be greatly appreciated.

Take a look at the Fiddle here: http://jsfiddle.net/D7M2Z/

This is how I remove an object from the model array:

$scope.removeQuestion = function(index){
  $scope.testFormChoiceCount.splice(index, 1);
}

Answer №1

If you need assistance, feel free to check out this jsfiddle

Check out this snippet:

   for( var i=0; i<$scope.testFormChoiceCount[0].choices.length; i++ ){
      newobject.choices.push(new Object({choice : ''}));
   }

After removing all objects, the value of $scope.testFormChoiceCount[0].choices.length becomes undefined

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