How to extract data from json using angularjs? - angularjs

Question

Here in {{msg}} I can display all jason data with Selected:true or false..
but What I need is I don't want to display all the datas, when I click Save button I want to display questions.id,option.id and selected:true or false below the textbox
we will get all the json data from $scope.questions.
Home.html
<div ng-repeat="question in filteredQuestions">
<div class="label label-warning">Question {{currentPage}} of {{totalItems}}.</div>
<div class="row">
<div class="row">
<h3>{{currentPage}}. <span ng-bind-html="question.Name"></span></h3>
</div>
</div>
<div class="row text-left options">
<div class="col-md-6" ng-repeat="option in question.Options" style="float:right;">
<div class="option">
<label class="" for="{{option.Id}}">
<h4> <input id="{{option.Id}}" type="checkbox" ng-model="option.Selected" ng-change="onSelect(question, option);" />
{{option.Name}}</h4>
</label>
</div>
</div>
</div>
<div class="center"><button ng-click="save()">Save</button></div>
<div class="center"><textarea rows="5" cols="50">{{msg}}</textarea></div>
</div>
controllers.js
var HomeController = function ($scope, $http, helper) {
/*$scope.names = response.data;
$scope.detectChange=function(){
$scope.msg = 'Data sent: '+ JSON.stringify($scope.filteredQuestions);
}*/
$scope.save = function() {
$scope.msg = 'Data sent: '+ JSON.stringify($scope.questions);
}
$scope.quizName = 'data/csharp.js';
$scope.loadQuiz = function (file) {
$http.get(file)
.then(function (res) {
$scope.quiz = res.data.quiz;
$scope.config = helper.extend({}, $scope.defaultConfig, res.data.config);
$scope.questions = $scope.config.shuffleQuestions ? helper.shuffle(res.data.questions) : res.data.questions;
$scope.totalItems = $scope.questions.length;
$scope.itemsPerPage = $scope.config.pageSize;
$scope.currentPage = 1;
$scope.mode = 'quiz';
$scope.$watch('currentPage + itemsPerPage', function () {
var begin = (($scope.currentPage - 1) * $scope.itemsPerPage),
end = begin + $scope.itemsPerPage;
$scope.filteredQuestions = $scope.questions.slice(begin, end);
});
});
}
$scope.loadQuiz($scope.quizName);
}
HomeController.$inject = ['$scope', '$http', 'helperService'];
csharp.js
{
"quiz": {
"Id": 2,
"name": "C# and .Net Framework",
"description": "C# and .Net Quiz (contains C#, .Net Framework, Linq, etc.)",
"paragraph": "In 2015 Microsoft released ASP.NET 5.ASP.NET 5 is a significant redesign of ASP.NET.ASP.NET, MVC, and Web Pages are now merged into a single framework named MVC 6.It includes the following features:Linux support OSX support Node.js supportA ngularJS supportTag ,HelpersView, ComponentsWeb ,APIGruntJS ,supportBower, supportNo ,Visual BasicNo Web Forms"
},
"config": {
"shuffleQuestions": true,
"showPager": false,
"allowBack": true,
"autoMove": false
},
"questions": [{
"Id": 1010,
"Name": "Which of the following assemblies can be stored in Global Assembly Cache?",
"QuestionTypeId": 1,
"Options": [{
"Id": 1055,
"QuestionId": 1010,
"Name": "Private Assemblies"
}, {
"Id": 1056,
"QuestionId": 1010,
"Name": "Friend Assemblies"
}, {
"Id": 1057,
"QuestionId": 1010,
"Name": "Public Assemblies"
}, {
"Id": 1058,
"QuestionId": 1010,
"Name": "Shared Assemblies"
}]
}, {
"Id": 1019,
"Name": "Which of the following does NOT represent Integer?",
"QuestionTypeId": 1,
"Options": [{
"Id": 1055,
"QuestionId": 1010,
"Name": "Char"
}, {
"Id": 1056,
"QuestionId": 1010,
"Name": "Byte"
}, {
"Id": 1057,
"QuestionId": 1010,
"Name": "Short"
}, {
"Id": 1058,
"QuestionId": 1010,
"Name": "Long"
}]
}]
}
This is my answer of above code..here Displaying all the data
Data sent: [{"Id":1013,"Name":"Which of the following is NOT an Arithmetic operator in C#.NET?","QuestionTypeId":1,"Options":[{"Id":1055,"QuestionId":1010,"Name":"** (Double Star)","$$hashKey":"00X","Selected":false},{"Id":1057,"QuestionId":1010,"Name":"+ (Plus)","$$hashKey":"00Y","Selected":false},
"$$hashKey":"00C"}]
but I want to display the all the question id's and corresponding option id's and if it is selected,selected:true otherwise false in the format of above output

Answer 1

If you want to change what is presented to the user after saving you should change this function:
$scope.save = function() {
$scope.msg = 'Data sent: '+ JSON.stringify($scope.questions);
}
to something like:
$scope.save = function() {
$scope.msg = 'Question IDs:';
$scope.questions.forEach(function(el){
$scope.msg += el.Id + ',';
}
}
This for example will join all the ids of the array that conains all the questions.
To add options and selections you have to ng-model the value to some variable that you will use inside your controller.
I think you should check a little guide to angularjs two-way data binding