So i am a new to angular. Trying to make a simple modal using angular directives only.
The reasons for making this:
No need to use bootstrap
No need for a controller and
Thus no dependency injection
function modalTrigger() {
return {
restrict: 'A',
transclude: true,
link: function(scope, element, attrs) {
scope.show = false;
scope.toggleModal = function() {
console.log(scope);
scope.show = !scope.show;
};
},
template: '<div class="modal-trigger" ng-click="toggleModal()" ng-transclude></div>'
};
}
function modalDialog() {
return {
restrict: 'E',
transclude: true,
link: function(scope, element, attrs) {
scope.dialogStyle = {};
if (attrs.width)
scope.dialogStyle.width = attrs.width;
if (attrs.height)
scope.dialogStyle.height = attrs.height;
scope.hideModal = function() {
console.log("called hide modal");
scope.show = false;
};
},
template: "<div class='ng-modal' ng-show='show'><div class='modal-backdrop' ng-click='hideModal()'></div><div class='container' ng-style='dialogStyle'><div class='ng-modal-close' ng-click='hideModal()'><a href=''>×</a></div><div class='modal-content' ng-transclude></div></div></div>"
};
}
"modal-trigger" directive is used to trigger the "modal-dialog" directive by setting "show" to true. here are the two directives
Right now, if you click any of the triggers, both the modals show up. how do i make the triggers specific to their own modals?
To make things more clear, here is an example on plunker: http://plnkr.co/edit/lNwTy3ddFFBBm2DPHUGA?p=preview
The problem is that both modals observe the same attribute (show) for showing/hiding themselves. To correct this, the show attribute must be scoped for each modal and I propose the following:
Have a controller that defines the 2 show attributes:
app.controller('Ctrl', function($scope) {
$scope.show1 = false;
$scope.show2 = false;
});
And activate it as:
<body ng-app="angularApp" ng-controller="Ctrl as ctrl">
Change the modal trigger to have isolated scope and the show attribute, as follows:
function modalTrigger() {
return {
restrict: 'A',
transclude: true,
link: function(scope, element, attrs) {
scope.toggleModal = function() {
scope.show = !scope.show;
};
},
scope: {
show: '='
},
template: '<div class="modal-trigger" ng-click="toggleModal()" ng-transclude></div>'
};
}
Use it e.g. as:
Waiting List
Change the modal directive to use isolated scope with the show attribute; simply add:
scope: {
show: '='
},
to the directive. Use it as:
<modal-dialog data-modal-name="modal1" show="ctrl.show1">
A forked plunker with the full solution: http://plnkr.co/edit/cJOXju9H3PMjRdUKqVCF?p=preview
Related
Before setting the compiled html to dynamic-html div, my dynamicHtml is working correctly. As you can see, there's a onClick function in directive.
But unfortunately, after setting compiled html to div, onClick is not called anymore.
var content = $compile(res)($scope);
$('dynamic-html').html(content);
My dynamicHTML directive looks like this:
.directive('dynamicHtml', function($compile, $timeout) {
return {
restrict: 'E',
transclude: true,
link: function($scope, $element) {
$scope.datePickers = {};
$scope.onClick = function (variable, $event) {
var currentTarget = $event.currentTarget;
$scope.$parent.$parent.highlight(variable, true, currentTarget);
};
I tried to add transclude on directive as you can see. But it's not working on this case.
Can you please guide me to solve this problem?
Check it out the following code,
angular.module("myApp", [])
.directive("compiled", function($compile){
return {
restrict: "AE",
scope: {},
link: function(scope, ele, attrs){
var compiled = $compile("<div><hello-world></hello-world></div>")(scope);
ele.replaceWith(compiled);
}
}
})
.directive("helloWorld", function(){
return {
restrict: "AE",
scope: {},
transculde: true,
link: function(scope, ele, attrs){
scope.sayhello = function(){
alert("Hello World");
}
},
template: '<button ng-click="sayhello()">Say Hello</button>'
}
})
Html
<compiled></compiled>
I am trying to figure out how to pass a transclusion down through nested directives and bind to data in the inner-most directive. Think of it like a list type control where you bind it to a list of data and the transclusion is the template you want to use to display the data. Here's a basic example bound to just a single value (here's a plunk for it).
html
<body ng-app="myApp" ng-controller="AppCtrl as app">
<outer model="app.data"><div>{{ source.name }}</div></outer>
</body>
javascript
angular.module('myApp', [])
.controller('AppCtrl', [function() {
var ctrl = this;
ctrl.data = { name: "Han Solo" };
ctrl.welcomeMessage = 'Welcome to Angular';
}])
.directive('outer', function(){
return {
restrict: 'E',
transclude: true,
scope: {
model: '='
},
template: '<div class="outer"><inner my-data="model"><div ng-transclude></div></div></div>'
};
})
.directive('inner', function(){
return {
restrict: 'E',
transclude: true,
scope: {
source: '=myData'
},
template :'<div class="inner" my-transclude></div>'
};
})
.directive('myTransclude', function() {
return {
restrict: 'A',
transclude: 'element',
link: function(scope, element, attrs, controller, transclude) {
transclude(scope, function(clone) {
element.after(clone);
})
}
}
});
As you can see, the transcluded bit doesn't appear. Any thoughts?
In this case you don't have to use a custom transclude directive or any trick. The problem I found with your code is that transclude is being compiled to the parent scope by default. So, you can fix that by implementing the compile phase of your directive (this happens before the link phase). The implementation would look like the code below:
app.directive('inner', function () {
return {
restrict: 'E',
transclude: true,
scope: {
source: '=myData'
},
template: '<div class="inner" ng-transclude></div>',
compile: function (tElem, tAttrs, transclude) {
return function (scope, elem, attrs) { // link
transclude(scope, function (clone) {
elem.children('.inner').append(clone);
});
};
}
};
});
By doing this, you are forcing your directive to transclude for its isolated scope.
Thanks to Zach's answer, I found a different way to solve my issue. I've now put the template in a separate file and passed it's url down through the scopes and then inserting it with ng-include. Here's a Plunk of the solution.
html:
<body ng-app="myApp" ng-controller="AppCtrl as app">
<outer model="app.data" row-template-url="template.html"></outer>
</body>
template:
<div>{{ source.name }}</div>
javascript:
angular.module('myApp', [])
.controller('AppCtrl', [function() {
var ctrl = this;
ctrl.data = { name: "Han Solo" };
}])
.directive('outer', function(){
return {
restrict: 'E',
scope: {
model: '=',
rowTemplateUrl: '#'
},
template: '<div class="outer"><inner my-data="model" row-template-url="{{ rowTemplateUrl }}"></inner></div>'
};
})
.directive('inner', function(){
return {
restrict: 'E',
scope: {
source: '=myData',
rowTemplateUrl: '#'
},
template :'<div class="inner" ng-include="rowTemplateUrl"></div>'
};
});
You can pass your transclude all the way down to the third directive, but the problem I see is with the scope override. You want the {{ source.name }} to come from the inner directive, but by the time it compiles this in the first directive:
template: '<div class="outer"><inner my-data="model"><div ng-transclude></div></div></div>'
the {{ source.name }} has already been compiled using the outer's scope. The only way I can see this working the way you want is to manually do it with $compile... but maybe someone smarter than me can think of another way.
Demo Plunker
I want to create a component that displays itself as a collapsible box.
When it is expanded, it should show the transcluded content; when it is collapsed it should only show its label.
myApp.directive('collapsingBox', function() {
return {
restrict: 'E',
transclude: true,
require: '^ngModel',
scope: {
ngModel: '='
},
template: '<div ng-controller="CollapseController" class="collapsingBox"><div class="label">Title: {{ ngModel.title }}</div><br/><div ng-transclude ng-show="expanded">Test</div></div>',
link: function($scope, element, attr) {
element.bind('click', function() {
alert('Clicked!');
$scope.toggle();
});
}
};
});
This component should be reusable and nestable, so I wanted to manage the values (like "title" and "expanded") in a controller that gets instantiated for every use of the directive:
myApp.controller('CollapseController', ['$scope', function($scope) {
$scope.expanded = true;
$scope.toggle = function() {
$scope.expanded = !$scope.expanded;
};
}]);
This "almost" seems to work:
http://plnkr.co/edit/pyYV0MAikXThvMO8BF69
The only thing that does not work seems to be accessing the controller's scope from the event handler bound during linking.
link: function($scope, element, attr) {
element.bind('click', function() {
alert('Clicked!');
$scope.toggle(); // this is an error -- toggle is not found in scope
});
}
Is this the correct (usual?) way to create one instance of the controller per use of the directive?
How can I access the toggle-Function from the handler?
Rather than using ng-controller on your directive's template, you need to put the controller in your directive's controller property:
return {
restrict: 'E',
transclude: true,
require: '^ngModel',
scope: {
ngModel: '='
},
template: '<div class="collapsingBox"><div class="label">Title: {{ ngModel.title }}</div><br/><div ng-transclude ng-show="expanded">Test</div></div>',
controller: 'CollapseController',
link: function($scope, element, attr) {
element.bind('click', function() {
alert('Clicked!');
$scope.toggle();
});
}
};
As it is CollapseController's scope will be a child scope of your directive's scope, which is why toggle() isn't showing up there.
Html
<div class="result" ng-controller="test">
<div>{{result}}</div>
<a ng-href="{{result}}"></a>
</div>
JS
App.controller('AppCtrl', function AppCtrl($scope){
$scope.result = "www.google.com";
}
In a jquery file I can't modify because of some reason, some code changed the value of href, like:
$('.result>a').attr('href','www.youtube.com');
I want the value of $scope.result in the controller also changed from "www.google.com" to "www.youtube.com". But the result value in the div didn't change after the jquery code. Do I need write directive to watch the href attribute by myself? Or there are some other way to use ng-href? I try to write the directive by myself, but it didn't work. I hope you can give me a small example. Thanks :)
Update:
This is my directive, it didn't work, after something like $('.result>a').attr('href','www.youtube.com'), the console didn't print "change!" and the $scope.result didn't change:
APP.directive('result', function() {
return {
restrict: 'E',
scope: {
ngModel: '='
},
template: "<div class='result'><a ng-href='{{ngModel}}' href=''></a></div>",
replace: true,
require: 'ngModel',
link: function(scope, element, attrs) {
var $element = $(element.children()[0]);
scope.$watch($element.attr('href'), function(newValue) {
console.log("change!");
scope.ngModel = newValue;
})
}
};
});
Update Again: Still can't work...
Html:
<div class="result">
<a ng-href="{{result}}" ng-model="result" class="resulta"></a>
</div>
JS:
APP.directive('resulta', function() {
return {
restrict: 'C',
scope: {
ngModel: '='
},
link: function(scope, element, attrs) {
scope.$watch(attrs.href, function(newValue) {
console.log("change!");
scope.ngModel = newValue;
})
}
};
});
You can indeed create a custom directive to do it. See the example. I use transclude scope so you can put whatever you like in the link. I set 'replace: true' so the directive is removed and replaced with the <a>.
UPDATE
Using MutationObserver to watch for changes to the <a href>
var app = angular.module("MyApp", []);
app.directive("myHref", function() {
return {
restrict: 'E',
replace: true,
transclude: true,
link: function(scope, elem, attrs) {
var observer = new MutationObserver(function(mutations) {
mutations.forEach(function(mutation) {
scope.$parent.result = mutation.target.href;
scope.$apply();
});
});
// configuration of the observer:
var config = {
attributes: true,
childList: true,
characterData: true
};
observer.observe(elem[0], config);
},
scope: {
myHref: '='
},
template: '<a target="_blank" ng-transclude href="{{myHref}}"></a>'
};
});
app.controller('AppCtrl', function($scope) {
$scope.result = "http://www.yahoo.com";
$scope.$watch('result', function() {
alert($scope.result);
});
});
setTimeout(function() {
$('.result > a ').attr('href', 'http://www.youtube.com');
}, 1000);
<script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.2.23/angular.min.js"></script>
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<div ng-app="MyApp">
<div class="result" ng-controller="AppCtrl">
<my-href my-href="result">My Link</my-href>
</div>
</div>
I want to nest two directives and the inner directive has a ng-class bound to a function that takes a scope attribute from inner and outer scopes and return a Boolean
This is the HTML:
<ul my-toolbar disabled-when="myCtrl.isProcessing" >
<li my-action-button action="myCtrl.action()" disable-when="myCtrl.isSad()" />
</ul>
This is my outer directive:
myApp.directive("myToolbar", function() {
return {
restrict: 'A',
scope: {
disabled: '=disabledWhen'
},
transclude: true,
controller: function($scope) {
this.isDisabled = function() {
return $scope.disabled;
}
}
};
});
And this is my inner directive:
myApp.directive("myActionButton", function() {
return {
restrict: 'A',
scope: {
action: '&',
disabled: '=disabledWhen'
},
replace: true,
template: "<li ng-class='{disabled: isDisabled()}'><a ng-click='isDisabled() || action()' /></li>",
link: function(scope, elem, attrs, toolbarCtrl) {
scope.isDisabled = function() {
return toolbarCtrl.isDisabled() || scope.disabled;
};
}
};
});
Now the problem is that the ng-class='{disabled: isDisabled()}' binding is initialized once in the beginning but not updated when myCtrl.isProcessing changes!
Can someone please explain why? and how can I fix this without changing my design?
#Jonathan as requested I put my angular code in a fiddle and (this is part that's irritating me now) it works!
http://jsfiddle.net/shantanusinghal/ST3kH/1/
Now, I'll go back to seeing why it doesn't work for me in my production code!! *puzzled