I am trying to parse nested JSON with AngularJS. There are items in it which will used throughout the page, however there are also nested news items in there. I'm not sure how to work this out.
test.json
{
"CustomerName" : "TEST",
"PaidCustomer" : true,
"LaunchEndDate" : "24-07-2021",
"LauncherTitle" : "Launcher Title",
"LauncherSlogan" : "LauncherSlogan",
"CommunityLogo" : "logo.jpg",
"news" : [
{
"Title" : "News 1",
"Description" : "Newsmessage 1",
"FeaturesImage" : "",
"Author" : "Hutserino",
"Tags" : [ "#launcher", "#HellYeah" ],
},
{
"Title" : "News 2",
"Description" : "news 2",
"FeaturesImage" : "",
"Author" : "Hutserino",
"Tags" : [ "#launcher", "#HellYeah" ]
}
]
}
I've already tried this:
Angular code
<script>
(function() {
angular.module('myApp', []);
function myController($scope, $http) {
return $http.get('launcher.json')
.then(function(response) {
return response.data;
});
return {
LauncherTitle: LauncherTitle,
LauncherSlogan: LauncherSlogan
}
var data = response.data;
data.forEach(data.news, function(clientdata.news, index) {
angular.forEach(clientdata.news, function(newsitem, index){
$scope.news.push(newsitem);
});
});
}
})();
</script>
HTML
<div ng-app="myApp" ng-controller="myController">
<h1 class="display-3">{{ GameLauncherTitle }}</h1>
<h3 class="display-5">{{ GameLauncherSlogan }}</h3>
<div class="card-columns">
<div class="card" ng-repeat="newsitem in news">
<img src="{{ newsitem.FeaturesImage }}" class="card-img-top" alt="...">
<div class="card-body">
<h5 class="card-title text-dark">{{ newsitem.Title }}</h5>
<p class="card-text text-dark">{{ newsitem.Description }}</p>
</div>
</div>
</div>
</div>
But this isn't returning any results.
You are quitting out of your myController function with the two returns, I think you might have been trying
(function() {
var myApp = angular.module('myApp', []);
myApp.controller('myController', function($scope, $http) {
$scope.news = []
$http.get('launcher.json')
.then(function(r) {return JSON.parse(r)})
.then(function(response) {
response.news.forEach(function(newsitem){
$scope.news.push(newsitem);
});
});
});
})();
Can you try this instead of your Angular Code?
Cleaned version:
(() => {
const myApp = angular.module('myApp', []);
myApp.controller('myController', ($scope, $http) => {
$scope.news = []
$http.get('launcher.json')
.then(r => JSON.parse(r))
.then(response => {
response.news.forEach(function (newsitem) {
$scope.news.push(newsitem);
})
})
})
})();
Related
i have the following .json file:
[
{
"host": "host00",
"avgcpu": "1%",
"maxcpu": "2%",
"freem": "32000"
},
{
"host": "node01",
"avgcpu": "33%",
"maxcpu": "80%",
"freem": "64000"
},
{
"host": "node02",
"avgcpu": "55%",
"maxcpu": "75%",
"freem": "100000"
},
{
"host": "node03",
"avgcpu": "85%",
"maxcpu": "100%",
"freem": "86674"
},
{
"host": "node04",
"avgcpu": "3%",
"maxcpu": "7%",
"freem": "86613"
}
]
I try to read it with the following controller:
angular.module('usagemdl').controller('usagectrl', ['$scope', '$http', function ($scope, $http) {
$http.get('/out/usage.json')
.then(function (response) {
$scope.usages = response.usages;
});
}]);
And then i try to display it with the following html code:
<div class="cards" ng-controller="usagectrl">
<div class="card" style="width: 18rem;" ng-repeat="usage in usages">
<div class="card-header">
{{ usage.host }}
</div>
<ul class="list-group list-group-flush">
<li class="list-group-item">{{ usage.avgcpu }}</li>
<li class="list-group-item">{{ usage.maxcpu }}</li>
<li class="list-group-item">{{ usage.freem }}</li>
</ul>
</div>
</div>
ng-app is defined in my <body> which works properly in a different scenario.
Im not sure what im doing wrong.
I can see a empty card for a second but then it dissappers.
Please let me know if you need any further code to find the issue.
I this you should do that one. you are missing data from response.
angular.module('usagemdl').controller('usagectrl', ['$scope', '$http', function ($scope, $http) {
$http.get('/out/usage.json')
.then(function (response) {
$scope.usages = response.data;
console.log($scope.usages);
});
}]);
I'm trying the example in reactjs tutorial https://facebook.github.io/react/docs/tutorial.html to read the json from server(file). But, my "componentDidMount" is not getting called.
Below is the code:
var CommentBox = React.createClass({
loadCommentsFromServer: function() {
$.ajax({
url: this.props.url,
dataType: 'json',
success: function(data) {
this.setState({data: data});
}.bind(this),
error: function(xhr, status, err) {
console.error(this.props.url, status, err.toString());
}.bind(this),
cache: false
});
},
getInitialState: function() {
return {data: {}};
},
componentDidMount: function() {
this.loadCommentsFromServer();
},
render: function() {
return (
<div className="commentBox">
<h1>Comments</h1>
<CommentList data={this.state.data} />
</div>
);
}
});
var CommentList = React.createClass({
render: function() {
var commentNodes = this.props.data.content.map(function(comment) {
return (
<Comment pageName={comment.xyz} key={comment.id}>
{comment.abc}
</Comment>
);
});
return (
<div className="commentList">
{commentNodes}
</div>
);
}
});
var Comment = React.createClass({
render: function() {
return (
<div className="comment">
<h2 className="commentpageName">
{this.props.pageName}
</h2>
<p> {this.props.children} </p>
</div>
);
}
});
ReactDOM.render(<CommentBox url="/api/comments" />, document.getElementById('content'));
Please check the way I have initialized the data(data: {})
The "componentDidMount" gets called when the json is of the following type(Just the way in the tutorial):
[ {"id": "1", "xyz": "xyz1", "abc": "abc1"},
{"id": "2", "xyz": "xyz2", "abc": "abc2"} ]
But the json format I want is:
{
content: [
{"id": "1", "xyz": "xyz1", "abc": "abc1"},
{"id": "2", "xyz": "xyz2", "abc": "abc2"},
{"id": "3", "xyz": "xyz3", "abc": "abc3"}],
"totalPages":3,
"totalElements":10,
"last":true
}
Let me know in what conditions the componentDidMount doesn't get called. Please help.
In the "Networks" console of chrome developer tools, I don't see the call made to my json file.
When I added logs in my program, I see that getInitialState() gets called first, then render, then the error "Uncaught TypeError: Cannot read property 'data' of null" is shown.
I think your componentDidMount() is not called because your render code inside <CommentList> does not work on first render, because data is empty, and this.props.data.content probably does not exist, therefore your render fails.
What you probably should do is change this:
var commentNodes = this.props.data.content.map(function(comment) {
To this:
var commentNodes = [];
if (this.props.data.content) {
commentNodes = this.props.data.content.map(function(comment) {
...
}
componentDidMount() is always called after the first render (and not in subsequent renders)
My app pulls json data and randomises the results on click, how can i validate each result that get's generated and state whether the value is valid/invalid?
view
<div ng-controller="idCtrl">
<button ng-click="randomize()">Random value on click</button>
<p>Id Number: <span data-ng-bind="RandomId.number"></span></p>
<p>Valid?: <span></span> </p>
</div>
json
[
{"number": "8607025402081"},
{"number": "8501016184086"},
{"number": "6104053425672"},
{"number": "8909025012083"},
{"number": "2222222222222"},
{"number": "8888888888888"},
{"number": "0000000000000"},
{"number": "9999999999999"}
]
script
var idApp = angular.module('idApp', []);
idApp.controller('idCtrl', ['$scope', '$http', function ($scope, $http) {
$scope.regex = '(((\d{2}((0[13578]|1[02])(0[1-9]|[12]\d|3[01])|(0[13456789]|1[012]) (0[1-9]|[12]\d|30)|02(0[1-9]|1\d|2[0-8])))|([02468][048]|[13579][26])0229))(( |-)(\d{4})( |-)(\d{3})|(\d{7}))';
$scope.randomize = function(){
$http.get('js/idnumbers.json')
.success(function(data) {
$scope.idnumber = data;
var randomIDIndex = Math.floor(Math.random() * $scope.idnumber.length);
$scope.RandomId = $scope.idnumber[randomIDIndex];
console.log(data);
})};
}]);
ngPattern is used with input controls most often. If you wanted to use ngPattern you could do something like the following. However, the invalid values are not being put in the text box. I assume this is because they are...invalid.
Note: I modified your regex from a string to a RegExp.
var idApp = angular.module('idApp', []);
idApp.controller('idCtrl', ['$scope', '$http',
function($scope, $http) {
var data = [{
"number": "8607025402081"
}, {
"number": "8501016184086"
}, {
"number": "6104053425672"
}, {
"number": "8909025012083"
}, {
"number": "2222222222222"
}, {
"number": "8888888888888"
}, {
"number": "0000000000000"
}, {
"number": "9999999999999"
}];
$scope.regex = /(((\d{2}((0[13578]|1[02])(0[1-9]|[12]\d|3[01])|(0[13456789]|1[012]) (0[1-9]|[12]\d|30)|02(0[1-9]|1\d|2[0-8])))|([02468][048]|[13579][26])0229))(( |-)(\d{4})( |-)(\d{3})|(\d{7}))/;
$scope.randomize = function() {
//make your HTTP call here
$scope.idnumber = data;
var randomIDIndex = Math.floor(Math.random() * $scope.idnumber.length);
$scope.RandomId = $scope.idnumber[randomIDIndex];
console.log($scope.form.theInput.$valid);
};
}
]);
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.2.23/angular.min.js"></script>
<div ng-app="idApp">
<div ng-controller="idCtrl">
<form name="form">
<button ng-click="randomize()">Random value on click</button>
<p>Id Number: <input name="theInput" ng-pattern="regex" ng-model="RandomId.number"></input></p>
<p>Valid?: <span>{{form.theInput.$valid}}</span> </p>
</form>
</div>
</div>
Since ngPattern is limited to input boxes you may want to just use good ol' JavaScript to accomplish the validation. E.g.,
var idApp = angular.module('idApp', []);
idApp.controller('idCtrl', ['$scope', '$http',
function($scope, $http) {
var data = [{
"number": "8607025402081"
}, {
"number": "8501016184086"
}, {
"number": "6104053425672"
}, {
"number": "8909025012083"
}, {
"number": "2222222222222"
}, {
"number": "8888888888888"
}, {
"number": "0000000000000"
}, {
"number": "9999999999999"
}];
var regex = /(((\d{2}((0[13578]|1[02])(0[1-9]|[12]\d|3[01])|(0[13456789]|1[012]) (0[1-9]|[12]\d|30)|02(0[1-9]|1\d|2[0-8])))|([02468][048]|[13579][26])0229))(( |-)(\d{4})( |-)(\d{3})|(\d{7}))/;
$scope.randomize = function() {
//http call here
$scope.idnumber = data;
var randomIDIndex = Math.floor(Math.random() * $scope.idnumber.length);
$scope.RandomId = $scope.idnumber[randomIDIndex];
$scope.valid = regex.test($scope.RandomId.number);
};
}
]);
<script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.2.23/angular.min.js"></script>
<div ng-app="idApp">
<div ng-controller="idCtrl">
<button ng-click="randomize()">Random value on click</button>
<p>Id Number: <span data-ng-bind="RandomId.number"></span>
</p>
<p>Valid?: {{valid}}
</p>
</div>
</div>
I need to generate a select menu when a button is clicked. I am making an ajax call to get json data from external file, upon button click. which In turn should update the select with data from json. with the code below the select gets updated only after the button is clicked twice. I am watching the jsonData but its not working as expected.
HTML:
<div ng-controller="MainViewCtrl">
<button ng-click="getDeployedResources()"> Load Resources </button>
<select ng-model="selectedOption.name" ng-options="item.name as item.name for item in jsonData"></select>
</div>
json from dropdown.json:
{
"DeployedResources": {
"-env": "dev13",
"ResourceList": {
"-exportTime": 1444999007878,
"Resource": [{
"name": "default",
"type": "project"
},
{
"name": "System",
"type": "project"
},
{
"name": "StratusCommonServices",
"type": "project"
}]
}
}
}
JS:
var app = angular.module('JSONedit', ['ui.sortable'])
.controller('MainViewCtrl', ['$scope', '$http', '$filter','$compile', function ($scope, $http, $filter, $compile) {
$scope.jsonData = {};
$scope.getDeployedResources = function () {
$.ajax({
url: 'json/dropdown.json',
dataType: 'json'
}).done(function (data) {
$scope.jsonData = data.DeployedResources.ResourceList.Resource;
$scope.selectedOption = angular.copy($scope.jsonData[0]);
});
}
$scope.$watch('jsonData', function (json) {
$scope.jsonString = $filter('json')(json);
}, true);
$scope.$watch('jsonString', function (json) {
try {
$scope.jsonData = JSON.parse(json);
$scope.wellFormed = true;
} catch (e) {
$scope.wellFormed = false;
}
}, true);
}])
This is the correct life-cycle of a simple AngularJS Component!
Don't use jQuery for doing something that angular does better!
angular
.module('test', [])
.service('DataService', function($q, $http) {
var self = this;
var mock = {
id: 1,
"DeployedResources": {
"-env": "dev13",
"ResourceList": {
"-exportTime": 1444999007878,
"Resource": [{
"name": "default",
"type": "project"
}, {
"name": "System",
"type": "project"
}, {
"name": "StratusCommonServices",
"type": "project"
}]
}
}
};
self.load = function() {
console.log('loading data', mock.id);
for (var i = 0, len = mock.DeployedResources.ResourceList.Resource.length; i < len; i++) {
mock.DeployedResources.ResourceList.Resource[i].name += mock.id;
}
mock.id += 1;
return $q.when(mock);
return $http
.get('/api/data/')
.then(function(result) {
return result.data;
});
}
})
.controller('TestCtrl', function($scope, DataService) {
var vm = $scope;
vm.select = {
current: null,
items: []
};
vm.loadData = function(event) {
console.count('load data');
return DataService
.load()
.then(function(data) {
vm.current = data.id;
return data.DeployedResources.ResourceList.Resource;
})
.then(function(items) {
vm.select.items = items;
vm.select.current = vm.select.items[0];
})
};
vm.loadData();
});
.select-wrapper {
padding: 1em 2em;
background: yellow;
}
.select-wrapper select {
width: 100%;
}
<script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.4.5/angular.min.js"></script>
<article ng-app="test">
<div ng-controller="TestCtrl">
<button type="button" ng-click="loadData($event);">LoadNew</button>
<div class="select-wrapper">
<select ng-model="select.current" ng-options="item as item.name for item in select.items"></select>
</div>
<div ng-bind="select.items | json"></div>
</div>
</article>
I'm trying to select data from my json file with
$resource request :
Im using a global variable productSelected in my controller,
but when I change it's value with ng-model , that don't do an effect on the model and the value of reference still the same!
Anyone have an idea please ?
Here is my code :
var myApp = angular.module('myApp', ['ngResource']);
myApp.factory('Produits',['$resource', function ($resource) {
return $resource('data/produits.json/:id',{id: "#id"},
{
'get': {method:'GET'},
'save': {method:'POST'},
'query': {method:'GET', isArray:true},
'remove': {method:'DELETE'},
'delete': {method:'DELETE'}
}
);
}]);
myApp.controller('produitsCtrl', function($scope, $http,Produits,$log) {
$scope.productSelected=0;
Produits.query(function(data){
$scope.produits=data;
$scope.reference=$scope.produits[$scope.productSelected].reference ;
});
});
<div ng-app="myApp" >
<div ng-controller="produitsCtrl">
Product : <input type="text" ng-model="productSelected"/> {{ productSelected }} <br/>
Reference : {{reference}}
</div>
</div>
produits.json
[{
"id" : 1,
"reference": "AA"
},
{
"id" : 2,
"reference": "BB"
}]
Just have a look at this code may be helpful for you
<body ng-app="myApp" data-ng-controller="MainCtrl" id="div1">
Product : <input type="text" ng-model="productSelected" ng-change="fun(productSelected)"/> {{ productSelected }} <br/>
Reference :<p ng-model="reference"> {{reference}} </p>
<script>
var app = angular.module('myApp', []);
app.controller('MainCtrl', function($scope){
$scope.productSelected=0;
$scope.produits= [{
"id" : 1,
"reference": "AA"
},
{
"id" : 2,
"reference": "BB"
}];
$scope.reference=$scope.produits[$scope.productSelected].reference;
$scope.fun=function(val){
//alert(val)
if(val!=undefined && val!=null && val!='')
$scope.reference=$scope.produits[$scope.productSelected].reference;
else
$scope.reference=$scope.produits[0].reference;
};
});
</script>
</body>