First of all, the way i am doing may not be correct. But i will explain the problem:
1) I am creating directive called as < firstDirective >
2) when the clicks on a button in the first directive, then I am trying to insert the second directive dynamically at runtime
As follows:
<!DOCTYPE html>
<html>
<script src="lib/angular/angular.js"></script>
<body ng-app="myApp">
<first-directive></first-directive>
<script>
var app = angular.module("myApp", []);
app.directive("firstDirective", function() {
return {
template : '<h1>This is first directive!</h1> <br / ><br / ><button type="button" ng-click="firstCtrl()">Click Me to second directive!</button> <div id="insertSecond"></div> ',
controller: function ($scope) {
$scope.firstCtrl = function($scope) {
angular.element(document.querySelector('#insertSecond')).append('<second-directive></second-directive>');
}
}
}
});
app.directive("secondDirective", function() {
return {
template : '<h1>This is second directive!</h1> <br / ><br / >',
controller: function ($scope) {
}
}
});
</body>
</html>
But it is not working, i mean, it is inserting the "< second-directive > < / second-directive >" text but not the content as per the directive above.
I am new to angular js, I think we can do this in a different way or my approach itself is not correct. But all i want to insert the second directive dynamically.
EDIT:: I got the solution for this, thanks to the George Lee:
Solution is we have to compile as follows, but didn’t pass scope object to the function:
<!DOCTYPE html>
<html>
<script src="lib/angular/angular.js"></script>
<body ng-app="myApp">
<first-directive></first-directive>
<script>
var app = angular.module("myApp", []);
app.directive("firstDirective", function($compile) {
return {
templateUrl : '<h1>This is first directive!</h1> <br / ><br / ><button type="button" ng-click="firstCtrl()">Click Me to second directive!</button> <div id="insertSecond"></div> ',
controller: function ($scope) {
$scope.firstCtrl = function() {
var ele = $compile('<second-directive></second-directive>')($scope);
angular.element(document.querySelector('#insertSecond')).append(ele);
}
}
}
});
app.directive("firstDirective", function() {
return {
templateUrl : '<h1>This is second directive!</h1> <br / ><br / >',
controller: function ($scope) {
}
}
});
Also, this link , gives very good explanation of how to dynamically compile and inject the templates.
You can use the $compile service in Angular, make sure you include it in the dependency injection.
app.directive("firstDirective", ['$compile', function($compile) {
...
controller: function ($scope) {
$scope.firstCtrl = function() {
var ele = $compile('<second-directive></second-directive>')($scope);
angular.element(document.querySelector('#insertSecond')).append(ele);
}
}
There is one more problem instead of templateUrl, template should be there
<!DOCTYPE html>
<html>
<script data-require="angular.js#1.0.x" src="https://ajax.googleapis.com/ajax/libs/angularjs/1.0.8/angular.min.js" data-semver="1.0.8"></script>
<first-directive></first-directive>
<script>
var app = angular.module("myApp", []);
app.directive("firstDirective", function($compile) {
return {
template : '<h1>This is first directive!</h1> <br / ><br / ><button type="button" ng-click="firstCtrl()">Click Me to second directive!</button> <div id="insertSecond"></div> ',
controller: function ($scope) {
$scope.firstCtrl = function() {
var ele = $compile('<second-directive></second-directive>')($scope);
angular.element(document.querySelector('#insertSecond')).append(ele);
}
},
restrict: "EAC"
}
});
app.directive("secondDirective", function() {
return {
template : '<h1>This is second directive!</h1> <br / ><br / >',
controller: function ($scope) {
},
restrict: "EAC"
}
});
</script>
</body>
</html>
Related
I made a simple directive that print an object:
var app = angular.module("myApp", []);
app.controller('myCtrl', function($scope) {
$scope.users=[
{name:'davidi',age:'23'},
{name:'karen',age:'43'},
{name:'lior',age:'22'}
];
});
app.directive("appCustomer", function() {
var htmlcode="<p ng-repeat='user in customerInfo'>{{user.name}}</p>\
";
return {
restrict: 'E',
scope: {
customerInfo: '=info'
},
template : htmlcode
};
});
my html code:
<!DOCTYPE html>
<html>
<script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.6.9/angular.min.js"></script>
<body ng-app="myApp">
<div ng-controller="myCtrl">
<app-customer info="users"></app-customer>
</div>
</body>
</html>
<script src="angularapp.js"></script>
i want simply access the $scope.users in my directive, to print the users object without the ng-repeat,
so i made it like that:
var app = angular.module("myApp", []);
app.controller('myCtrl', function($scope) {
$scope.users=[
{name:'davidi',age:'23'},
{name:'karen',age:'43'},
{name:'lior',age:'22'}
];
});
app.directive("appCustomer", function() {
var htmlcode="";
var userslength=3;
for(var i=0;i<userslength;i++)
{
htmlcode=htmlcode+"<p>{{users["+i+"]['name']}}</p>";
}
return {
restrict: 'E',
template : htmlcode
};
});
thats works fine, but when i replace the userlength to $scope.users.length , the app fail.
so my question is how can i access a $scope from the controller in the directive?
JSFiddle
You need to specify the link function
app.directive("appCustomer", function() {
function link(scope, element, attrs) {
var htmlcode = "";
for (var i = 0; i < scope.users.length; i++) {
element.text(Put your text here);
// OR
element.html(Put your HTML here);
}
}
return {
restrict: 'E',
users: '=',
link: link
};
});
In the scope you will receive users array
The second is you can you element argument to put your data to template. Or create html template separately
My custom directive runs fine onload page load but when added using append it does not run properly. It does not show its content when at in runtime.
HTML:
<!doctype html>
<html lang="en" ng-app="module1">
<head>
<meta charset="UTF-8">
<title>Angular Demo</title>
<link rel="stylesheet" href="css/bootstrap.css">
<script src="js/angular.js"></script>
<script src="js/ui-bootstrap-tpls-0.13.0.js"></script>
<script src="js/app.js"></script>
</head>
<body>
<div id="divContainer" style="border-style: solid;border-color:red;" ng-controller = "Controller1 as cnt1" >
<button ng-click="clicked();">Click Me!!</button>
<wlaccordion></wlaccordion>
</div>
</body>
</html>
app.js:
var app = angular.module('module1',[]);
app.controller('Controller1', ['$scope', function($scope) {
$scope.authorData = authorInfo;
$scope.clicked = function () {
alert('Clicked');
//angular.element(document.getElementById('divContainer')).append('<wlaccordion1></wlaccordion1>' (scope));
angular.element(document.getElementById('divContainer')).append('<wlaccordion></wlaccordion>');
}
}]);//controller1
var authorInfo = [
{
'name': 'Ray',
'rate': '10',
'show': 'true'
},
{
'name': 'Mahesh',
'rate': '12',
'show': 'true'
}
]
app.directive("wlaccordion", function($compile) {
var template = '<div ng-controller = "Controller1 as cnt1">' +
'<div ng-repeat="aData in authorData" ng-init="tab = 1">' +
'<ul>' +
'<li>' +
'<h1 ng-show={{aData.show}} ng-class="{active: tab === 1}"> {{aData.name}} </h1>' +
'<h1 ng-show={{aData.show}} ng-class="{active: tab === 2}"> {{aData.rate | currency}} </h1>' +
'</li>' +
'</ul>' +
'</div>' +
'</div>';
return{
link: function(scope, element){
var content = $compile(template)(scope);
element.append(content);
}
}
});
I would like the directive to function same as onload.
-Thanks
Mahesh
AngularJS intended for separation of presentation logic and business one. So I think you should do this in Angular way, your current approach is more jQuery one.
I would suggest you to add accordions collection to controller:
app.controller('Controller1', ['$scope', function($scope) {
$scope.accordions = [0]; // Replace 0 with some actual data
$scope.clicked = function() {
$scope.accordions.push($scope.accordions.length); // Same here
};
// Your other code
}
And in HTML add ng-repeat:
<div id="divContainer" style="border-style: solid;border-color:red;" ng-controller = "Controller1 as cnt1" >
<button ng-click="clicked();">Click Me!!</button>
<wlaccordion ng-repeat="accordion in accordions"></wlaccordion>
</div>
Edit: Also don't forget to remove compilation from wlaccordion's link.
Edit #2: I suppose that authorInfo global var is used simply for example, however if it doesn't then consider usage of module.constant or module.value
app.controller('Controller1', ['$scope','$compile', function($scope, $compile) {
$scope.authorData = authorInfo;
$scope.clicked = function () {
alert('Clicked');
//angular.element(document.getElementById('divContainer')).append('<wlaccordion1></wlaccordion1>' (scope));
angular.element(document.getElementById('divContainer')).append($compile('<wlaccordion></wlaccordion>')($scope));
}
}]);//controller1
I have a AngularJS directive which takes an ID and makes a lookup on this ID to get col-width, hide-state and order for a given flexbox element.
What I d like to do is to add a ng-if=false attribute to the element if its hide-state is true. Is there any way, how I can add ng-if attribute from within a directive to a element?
My current code:
.directive("responsiveBehaviour", ['ResponsiveService', function(ResponsiveService){
var linkFunction = function(scope, element, attributes){
var id = attributes["responsiveBehaviour"];
var updateResponsiveProperties = function(){
element.attr("column-width", ResponsiveService.getWidth(id));
if(ResponsiveService.getOrder(id)){
element.attr("order", ResponsiveService.getOrder(id));
}
if(ResponsiveService.getHidden(id) == true){
element.attr("hidden", "");
} else {
element.removeAttr("hidden");
}
};
if(id) {
scope.$watch('device', function () {
updateResponsiveProperties();
});
}
};
If I add
element.attr("ng-if", false);
instead of
element.attr("hidden", "");
it just renders out the ng-if attribute to the element but there is no action happening, so the element is still rendered and visible although ng-if is false.
Do you have any idea on how to achieve what I am looking for?
Thanks in advance.
Greets
something like below:
var app = angular.module('plunker', []);
app.controller('MainCtrl', function($scope) {
$scope.name = 'World';
});
app.directive( 'test', function ( $compile ) {
return {
restrict: 'E',
scope: { text: '#' },
template: '<p ng-click="add()">Jenish</p>',
controller: function ( $scope, $element ) {
$scope.add = function () {
var el = $compile( "<test text='n'></test>" )( $scope );
$element.parent().append( el );
};
}
};
});
working plunk is here
Update
Here is simple example as you requested.
var app = angular.module('plunker', []);
app.controller('MainCtrl', function($scope) {
$scope.name = 'World';
$scope.add = function () {
alert('Jenish');
$scope.cond = false;
}
$scope.cond = true;
});
app.directive( 'test', function ( $compile ) {
return {
restrict: 'E',
template: '<p ng-click="add()">Click me to hide</p>',
link: function ( $scope, $element, attr ) {
var child = $element.children().attr('ng-if', 'cond')
console.log($element)
$compile(child)($scope);
}
};
});
<html ng-app="plunker">
<head>
<meta charset="utf-8" />
<title>AngularJS Plunker</title>
<script>document.write('<base href="' + document.location + '" />');</script>
<link rel="stylesheet" href="style.css" />
<script data-require="angular.js#1.3.x" src="https://code.angularjs.org/1.3.13/angular.js" data-semver="1.3.13"></script>
<script src="app.js"></script>
</head>
<body ng-controller="MainCtrl">
<p>Hello {{name}}!</p>
<test></test>
</body>
</html>
I hope this would help you.
I want to broadcast angular event from javascript function i.e angular.injector(['ng', 'myModule']).get("mySharedService").prepForBroadcast('hello');
By using above line I can invoke prepForBroadcast() but I can't catch event in $scope.$on()
Note: I want to call prepForBroadcast() method from javascript function.
<!-- index.html -->
<!DOCTYPE html>
<html>
<head>
<!-- SPELLS -->
<!-- load angular via CDN -->
<script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.0.8/angular.min.js"></script>
<script src="script.js"></script>
<style>
.question{
border:1px solid darkgray;
padding:10px;
margin-bottom:10px;
}
</style>
</head>
<body>
<div ng-app="myModule">
<div id="appID" ng-controller="ControllerZero">
<input ng-model="message" >
</div>
<div ng-controller="ControllerOne">
<input ng-model="message" >
</div>
<div ng-controller="ControllerTwo">
<input ng-model="message" >
</div>
<my-component ng-model="message"></my-component>
</div>
</body>
<script>
angular.injector(['ng','myModule']).get("mySharedService").prepForBroadcast('hello');
</script>
</html>
script.js file
var myModule = angular.module('myModule', []);
myModule.factory('mySharedService', function($rootScope) {
var sharedService = {};
sharedService.message = '';
sharedService.prepForBroadcast = function(msg) {
console.log('prepForBroadcast');
this.message = msg;
this.broadcastItem();
};
sharedService.broadcastItem = function() {
console.log('broadcastItem');
$rootScope.$broadcast('handleBroadcast');
};
return sharedService;
});
myModule.directive('myComponent', function(mySharedService) {
return {
restrict: 'E',
controller: function($scope, $attrs, mySharedService) {
$scope.$on('handleBroadcast', function() {
$scope.message = 'Directive: ' + mySharedService.message;
});
},
replace: true,
template: '<input>'
};
});
function ControllerZero($scope, sharedService) {
$scope.$on('handleBroadcast', function() {
console.log('handle event');
$scope.message = sharedService.message;
});
}
function ControllerOne($scope, sharedService) {
$scope.$on('handleBroadcast', function() {
$scope.message = 'ONE: ' + sharedService.message;
});
}
function ControllerTwo($scope, sharedService) {
$scope.$on('handleBroadcast', function() {
$scope.message = 'TWO: ' + sharedService.message;
});
}
ControllerZero.$inject = ['$scope', 'mySharedService'];
ControllerOne.$inject = ['$scope', 'mySharedService'];
ControllerTwo.$inject = ['$scope', 'mySharedService'];
angular.injector() creates a new injector, and with it a new $rootScope. The event will be broadcasted on this new $rootScope instead of on the one your controllers are listening on.
You need to retrieve the injector already associated with your application:
angular.element(domElement).injector();
You also need to manually trigger the digest loop for the data bindings to update, for example by using $apply.
Example:
angular.element(document).ready(function() {
var element = angular.element(document.querySelector('.ng-scope'));
var injector = element.injector();
var scope = element.scope();
scope.$apply(function() {
injector.get('mySharedService').prepForBroadcast('hello');
});
});
Demo: http://plnkr.co/edit/NDKBdzSmvN1xY7alafir?p=preview
Another way of publishing events from one controller and listening them in other controllers would be to use angular-PubSub module.
The PubSub makes only subscribers to listen to the published events unlike the $rootScope.$broadcast in which it sends event to all the Scopes in Scope hierarchy making it inefficient as compared to the PubSub approach.
I am trying to use my scope values in my head title tag. This is external to the body element that has my controller. IS there a way to do this?
Here is my HTML:
<!DOCTYPE html>
<html ng-app="soCLean">
<head>
<title>{{locale}} {{type}} {{service}}</title>
</head>
<body ng-controller="soCleanLandingPage">
<script type="text/javascript" src="//ajax.googleapis.com/ajax/libs/angularjs/1.2.12/angular.min.js"></script>
<script>
var soClean = angular.module('soClean', []);
soClean.controller('soCleanLandingPage', ['$scope', function ($scope) {
$scope.locale = 'vancouver';
$scope.type = 'residential';
$scope.service = 'pressure washing';
$scope.serviceSingle = 'pressure wash';
}]);
</script>
</body>
</html>
Thanks for your help.
Just move your ng-controller to the html element.
http://plnkr.co/edit/xImv48BvoW2Y9Ibb9JTq?p=preview
(You can see the values in head in the debugger)
<!DOCTYPE html>
<html ng-app="soClean" ng-controller="soCleanLandingPage">
<head>
<title>{{locale}} {{type}} {{service}}</title>
</head>
<body >
<div>
<p>{{locale}}</p>
<p>{{type}}</p>
<p>{{service}}</p>
<p>{{serviceSingle}}</p>
</div>
<script type="text/javascript" src="//ajax.googleapis.com/ajax/libs/angularjs/1.2.12/angular.min.js"></script>
<script>
var soClean = angular.module('soClean', []);
soClean.controller('soCleanLandingPage', ['$scope', function ($scope) {
$scope.locale = 'vancouver';
$scope.type = 'residential';
$scope.service = 'pressure washing';
$scope.serviceSingle = 'pressure wash';
}]);
</script>
</body>
</html>
You can use the $rootScope:
app.run(function($rootScope){
$rootScope.locale = "en";
$rootScope.type = "something";
$rootScope.service = "another";
});
You can also use a fancy directive:
app.directive('title', function(){
return {
restrict: 'E',
scope:{},
template: "{{locale}} {{type}} {{service}}",
link: function(scope){
scope.locale = "en";
scope.type = "something";
scope.service = "another";
}
}
});
Check this plunker: http://plnkr.co/edit/JRblEkKaOCLNC2O7r9s4?p=preview