Angularjs directive create click event - javascript

I have simple directive, like this:
angular.module('docsTemplateUrlDirective', [])
.controller('Controller', ['$scope', function($scope) {
$scope.customer = {
name: 'Naomi',
address: '1600 Amphitheatre'
};
$scope.clicke = function(){
alert('test');
};
}])
.directive('myCustomer', function() {
return {
templateUrl: 'my-customer.html'
};
});
index.html
<div ng-controller="Controller">
<div my-customer click-event='clicke()'></div>
</div>
my-customer.html
Name: {{customer.name}} Address: {{customer.address}}
<button>click</button>
and I would like create event for click to button, and after it in my controller
use this event.
But I don't know how to do it.
Help me pls. Thanks a lot.

I would suggest using something Angular already gives you: ng-click.
Here's a JSBin example that I did for you:
<div ng-controller="Controller">
<div my-customer ng-click='clicke()'></div>
</div>
If you click on the directive, it should look like this:

You can use ng-repeat to iterate over an array of customers and then have your ng-click function take parameters assocaited to which customer (index in the array) is being displayed...
<div ng-repeat="customer customers track by $index" ng-click="myClickHandler(index)">
{{customer}}
</div>

I would suggest following solution. A working example can be found at -
#sumit Plunker
Here's a code sample:
angular.module('docsTemplateUrlDirective', [])
.controller('Controller', ['$scope', function($scope) {
$scope.customer = {
name: 'Naomi',
address: '1600 Amphitheatre'
};
$scope.clicke = function(evt) {
alert('test');
};
}])
.directive('myCustomer', function($parse) {
return {
restrict: 'A',
scope: true,
templateUrl: 'my-customer.html'
}
})
.directive('clickEvent', function($parse) {
return {
restrict: 'A',
scope: true,
link: function(scope, el, attrs) {
var expressionHandler = $parse(attrs.clickEvent)
el.find('#btnSubmit').on('click', function(e) {
expressionHandler(scope);
})
}
}
});

Related

Why won't $compile work with service using a directive?

Please have a look at this example, since it is the best way to explain the problem.
In this example if you click the directive link, it does not compile the template, but instead displays it as "{{1+1}}".
On the other hand if you click the "Simple link" it compiles the template and displays "2" instead.
angular.module('myApp', [])
.provider('$popup', function() {
var service = {};
this.$get = ['$compile', '$rootScope', function($compile, $rootScope) {
var template = $('<div>{{1+1}}</div>');
service.go = function() {
$(document.body).append(template);
$compile(template)($rootScope);
}
return service;
}];
})
.directive('popupLink', ['$popup', function($popup) {
return {
restrict: 'A',
scope: {},
link: function link(scope, element, attrs) {
element.click(function() {
$popup.go();
return false;
});
}
};
}])
.controller('mainCtrl', ['$scope', '$popup', function($scope, $popup) {
$scope.go = function() {
$popup.go();
};
}])
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.6.1/angular.min.js"></script>
<div ng-app="myApp" ng-controller="mainCtrl">
<a ng-href="/test" popup-link>Directive link</a>
Simple link
</div>
My question is why isn't the template compiling with the directive? (but it does in the controller)
And how do I fix it so that it compiles in the directive also?
P.S. Here is the jsbin link in case you want to play around with the code:
http://jsbin.com/vuzutipedu/edit?html,js,output
The directive needs to do scope.$apply():
link: function link(scope, element, attrs) {
element.click(function() {
$popup.go();
//ADD apply
scope.$apply();
return false;
});
The click event handler executes outside the AngularJS framework. A framework digest cycle needs to be performed to execute the watcher for the {{1+1}} interpolation.
It works with the ng-click directive because that directive includes scope.$apply.
For more information, see
AngularJS Developer Guide - Integration with the browser event loop
DEMO
angular.module('myApp', [])
.provider('$popup', function() {
var service = {};
this.$get = ['$compile', '$rootScope', function($compile, $rootScope) {
var template = $('<div>{{1+1}}</div>');
service.go = function() {
$(document.body).append(template);
$compile(template)($rootScope);
}
return service;
}];
})
.directive('popupLink', ['$popup', function($popup) {
return {
restrict: 'A',
scope: {},
link: function link(scope, element, attrs) {
element.click(function() {
$popup.go();
//ADD apply
scope.$apply();
return false;
});
}
};
}])
.controller('mainCtrl', ['$scope', '$popup', function($scope, $popup) {
$scope.go = function() {
$popup.go();
};
}])
<script src="//unpkg.com/jquery"></script>
<script src="//unpkg.com/angular/angular.js"></script>
<div ng-app="myApp" ng-controller="mainCtrl">
<a ng-href="/test" popup-link>Directive link</a>
Simple link
</div>
Try this in $get, instead of $compile(template)($rootScope)
$compile(angular.element(template))(angular.element(template).scope());
Let me know if it works

Defining my own 'require' on a directive, but throw error - AngularJs

Let us say I have this html:
<div ng-controller="MyCtrl">
<br>
<my-directive my-name="name">Hello, {{name}}!</my-directive>
</div>
with this simple controller:
myApp.controller('MyCtrl', function ($scope) {
$scope.name = 'Superhero';
});
And I have a directive in which I want to change the 'name' using require like this:
myApp.directive('myDirective', function($timeout) {
var controller = ['$scope', function ($scope) {
$scope.name = "Steve";
}];
return {
restrict: 'EA',
require: 'myName',
controller: controller,
link: function(scope, element, attrs, TheCtrl) {
TheCtrl.$render = function() {
$timeout(function() {
TheCtrl.$setViewValue('StackOverflow');
}, 2000);
};
}
};
});
But throws:
Error: No controller: myName
Here is the fiddle
But if I implement it using ng-model, works. Look here in this other fiddle
I have read that if you use 'require' in a directive, you need to have a controller for it.
So:
What I'm doing is wrong? It is not in this way? I need to do any other thing?
Well finally I got it.
Essencially what I'm trying to do is something called: 'Communication between directives using controllers'. I have found an article explaining this, and helped me a lot:
The view:
<div ng-controller="MyCtrl">
<br>
<my-directive my-name>Hello, {{name}}!</my-directive>
</div>
As you see above, there are two directives: my-directive and my-name. I will call inside my-directive a function from the controller of my-name directive using require.
myDirective:
myApp.directive('myDirective', function($timeout) {
return {
require: 'myName',
link: function(scope, element, attrs, myNameCtrl) {
$timeout(function() {
myNameCtrl.setName("Steve");
}, 9000);
} // End of link
}; // return
});
myName:
myApp.directive('myName', function($timeout) {
var controller = ['$scope', function ($scope) {
// As I tried, this function can be only accessed from 'link' inside this directive
$scope.setName = function(name) {
$scope.name = name;
console.log("Inside $scope.setName defined in the directive myName");
};
// As I tried, this function can accessed from inside/outside of this directive
this.setName = function(name) {
$scope.name = name;
console.log("Inside this.setName defined in the directive myName");
};
}];
return {
controller: controller,
link: function(scope, element, attrs, localCtrl) {
$timeout(function() {
localCtrl.setName("Charles");
}, 3000);
$timeout(function() {
scope.setName("David");
}, 6000);
} // End of link function
};
});
Interesting and works like a charm. Here is the fiddle if you want to try it out.
Also, you can get communication between directives using events. Read this answer here on SO.

List of directives inside of an ng-repeat

I'm working on a page that is made up of 5 directives, for example:
<directive-one></directive-one>
<directive-two></directive-two>
<directive-three></directive-three>
<directive-four></directive-four>
<directive-five></directive-five>
I would like to be able to re-order these on demand so that a user can control how their page looks. The only way I could think of doing that was putting them in an ng-repeat:
$scope.directiveOrder = [{
name: "directive-one",
html: $sce.trustAsHtml('<directive-one></directive-one>'),
order: 1
}, ...
HTML:
<div ng-repeat="directive in directiveOrder" ng-bind-html="directive.html">
{{directive.html}}
</div>
This will give me the right tags, but they aren't processed as directives by angular. Is there a way around that? I'm assuming it's something to do with $sce not handling it, but I might be way off?
Try creating a new directive and using $compile to render each directive:
https://jsfiddle.net/HB7LU/18670/
http://odetocode.com/blogs/scott/archive/2014/05/07/using-compile-in-angular.aspx
HTML
<div ng-controller="MyCtrl">
<button ng-click="reOrder()">Re-Order</button>
<div ng-repeat="d in directives">
<render template="d.name"></render>
</div>
</div>
JS
var myApp = angular.module('myApp',[])
.directive('directiveOne', function() {
return {
restrict: 'E',
scope: {},
template: '<h1>{{obj.title}}</h1>',
controller: function ($scope) {
$scope.obj = {title: 'Directive One'};
}
}
})
.directive('directiveTwo', function() {
return {
restrict: 'E',
scope: {},
template: '<h1>{{obj.title}}</h1>',
controller: function ($scope) {
$scope.obj = {title: 'Directive Two'};
}
}
})
.directive("render", function($compile){
return {
restrict: 'E',
scope: {
template: '='
},
link: function(scope, element){
var template = '<' + scope.template + '></' + scope.template + '>';
element.append($compile(template)(scope));
}
}
})
.controller('MyCtrl', function($scope, $compile) {
$scope.directives = [{
name: 'directive-one'
}, {
name: 'directive-two'
}];
$scope.reOrder = function () {
$scope.directives.push($scope.directives.shift());
console.log($scope.directives);
};
});
I hope You can easily done it.
var myApp = angular.module('myApp',[])
.directive('directiveOne', function() {
return {
restrict: 'E',
scope: {},
template: '<h1>{{obj.title}}</h1>',
controller: function ($scope) {
$scope.obj = {title: 'Directive One'};
}
}
})
.directive('directiveTwo', function() {
return {
restrict: 'E',
scope: {},
template: '<h1>{{obj.title}}</h1>',
controller: function ($scope) {
$scope.obj = {title: 'Directive Two'};
}
}
});
myApp.controller('ctrl',function($scope){
$scope.data = [{name:'directive-one'},{name:'directive-two'}];
});
<html ng-app='myApp'>
<head>
<script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.2.17/angular.min.js"></script>
</head>
<body ng-controller='ctrl'>
<div ng-repeat='item in data'>
<item.name></item.name>
<directive-one></directive-one>
</body>
</html>

Initialize text input fields in angular directive

I have a directive which shows input fields and I want to initialize those fields with data from the server. The problem is that I can't do that while using ng-model.
Before using a directive I used in the controller something like $scope.field1 = $scope.first.field1
Here's my code. I simplified it for the sake of readability but the idea's here.
In my controller I have this code:
app.controller('MyController',
['$scope', 'myData', function($scope, myData) {
myData.then(function(data) {
$scope.first = data.first;
$scope.second = data.second;
});
}]);
Inside first and second I have 2 field: field1 and field2.
In in html code, I have this bit:
<h1>First</h1>
<my-directive info="first"></my-directive>
<h1>Second</h1>
<my-directive info="second"></my-directive>
The directive is as follows:
app.directive('myDirective', function() {
return {
restrict: 'E',
scope: {
info: '='
},
templateUrl: 'static/js/myDirective.html',
link: function(scope, element, attrs) {
scope.doStuff = function() {
/* Do stuff with
scope.field1 and scope.field2 */
}
}
};
});
and the myDirective.html code:
<input type="text" ng-model="myfield1" />
<input type="text" ng-model="myfield2" />
<input type="submit" ng-click="doStuff()" />
If in myDirective.html I write:
<input type="text" value="info.field1" />
I can see the value fine.
Any ideas?
probably your directive initializes before your data loads. and your directive sees ng-model as an undefined variable. You are not using info directly in template so no auto $watch's for you :).
you need to $watch your info variable in directive and call your doStuff function on change.
note: i wouldn't recommend adding a controller to a directive just for this task. adding a controller to a directive is needed when you need to communicate with other directives. not for waiting async data
edit
you should do
app.directive('myDirective', function() {
return {
restrict: 'E',
scope: {
info: '='
},
templateUrl: 'static/js/myDirective.html',
link: function(scope, element, attrs) {
scope.doStuff = function() {
/* Do stuff with
scope.field1 and scope.field2 */
}
scope.$watch('info', function(newValue){
scope.doStuff();
});
}
};
});
Check working demo: JSFiddle.
Define a controller for the directive and do the initialization inside it:
app.directive('myDirective', function() {
return {
restrict: 'E',
scope: {
info: '='
},
controller: ['$scope', 'myData', function ($scope, myData) {
myData.then(function(data){
$scope.first = data.first;
$scope.second = data.second;
});
}],
...
},
Inside the directive, myfield1 and myfield2 don't exist. You are close to solving the issue by using info.field1 instead.
var myApp = angular.module('myApp', []);
//Faking myData here; in your example this would come from the server
var myData = {
first: {
field1: "FirstField1",
field2: "FirstField2"
},
second: {
field1: "SecondField1",
field2: "SecondField2"
}
};
myApp.controller('MyController', ['$scope', function($scope) {
$scope.first = myData.first;
$scope.second = myData.second;
}]);
myApp.directive('myDirective', function() {
return {
restrict: 'E',
scope: {
info: '='
},
template: '<input type="text" ng-model="info.field1" /><input type="text" ng-model="info.field2" /><input type="submit" ng-click="doStuff()" />',
link: function(scope, element, attrs) {
scope.doStuff = function() {
alert('Info: ' + scope.info.field1 + ', ' + scope.info.field2);
}
}
};
});
<script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.4.5/angular.min.js"></script>
<div ng-app="myApp" ng-controller="MyController">
<h1>First</h1>
<my-directive info="first"></my-directive>
<h1>Second</h1>
<my-directive info="second"></my-directive>
</div>

How to get a value passed to a directive

i read Angularjs documentation .thereare examples for defining directives without passing a value.for example:
angular.module('docsTemplateUrlDirective', [])
.controller('Controller', ['$scope', function($scope) {
$scope.customer = {
name: 'Naomi',
address: '1600 Amphitheatre'
};
}])
.directive('myCustomer', function() {
return {
templateUrl: 'my-customer.html'
};
});
and HTML is
<div ng-controller="Controller">
<div my-customer></div>
</div>
but i want to create a directive like ng-model in which an attribute get passed.for example
<div ng-controller="Controller">
<div my-customer="Hello"></div>
</div>
i want to retrieve this hello in my directive definition link function.How to achieve that ??
You can pass as many as attributes and can access them directly using third argument in link function. Here you go:
.directive('myCustomer', function() {
return {
templateUrl: 'my-customer.html',
link: function(scope, element, attr) {
console.log('Attribute:', attr.myCustomer, attr.otherData);
}
};
});
<div my-customer="hello" other-data="foo"></div>
Just scroll a lil more in docs (Angular Directives) where you got above code, you will get how to get your answer attr of directive
.directive('myCustomer', function() {
return {
templateUrl: function(elem, attr){
...
//attr will be having the value
return attr;
}
};
If you want to use isolated scope, then you can do this:
.directive('myCustomer', function() {
return {
scope: {
myCustomer : '=' //If expected value is an object use '='. If it is just text, use '#'
}
templateUrl: 'my-customer.html',
link: function(scope, ele, attr){
console.log(scope.myCustomer);
}
};
});
If you don't want to use isolated scope, then
.directive('myCustomer', function($parse) {
return {
templateUrl: 'my-customer.html',
scope: true,
link: function(scope, ele, attr){
// if expected value is object
var hello = $parse(attr.myCustomer)(scope);
// if expected value is just text
var hello = attr.myCustomer;
}
};
});

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