Is it possible to bind to the text of an element without actually dropping into the link function?
<blink>Text Here or {{ controllerText() }}</blink>
// add a namespace for custom directives
angular.module('mydirectives', []);
angular.module('mydirectives').directive('blink', function() {
return {
restrict: 'E',
template: '<marquee scrollamount="100%">{{ can i do it here? }} </marquee>',
scope: {
// can i do it here?
}
};
});
So this is done with transclusion which merges the content of the original element with the template. The ng-transclude tag in the template is required to get it to work.
<blink>Bring the blink back<blink>
// add a namespace for custom directives
angular.module('mydirectives', []);
angular.module('mydirectives').directive('blink', function() {
return {
restrict: 'E',
transclude: true,
template: '<marquee scrollamount="100%" ng-transclude></marquee>'
}
});
You absolute can.
scope: {
text: '='
}
This adds a text attribute to the isolate scope that is linked to the value of the text attribute from the element.
So you need to change the html slightly to:
<blink text="fromController"></blink>
And then add that fromController attribute in the enclosing controller.
Here's a (very annoying) fiddle.
Related
I set up a directive as follows:
.directive('ogTakeATour', function() {
return {
restrict: 'E',
replace: true,
templateUrl: '../scripts/directives/TakeATourTemplate.html',
scope: {
content: '#',
uid: '#'
},
link: function(scope) {
angular.element(scope.uid).css("top","250px");
}
};
});
Directive template looks like this:
<div id="{{uid}}" class="tourContainer">
{{content}}
</div>
And this is how I call my directive:
<og-take-a-tour content="Content goes here" uid="menuTour"></og-take-a-tour>
However for some reasons this does not apply the css to the applicable div.
angular.element(scope.uid).css("top","250px");
Why is this? Could it be that the directive does not know what the id of my element is at the time the link function is running? How would I get around this if that is the case?
Angular's jQlite does not support search by id or CSS selector. So change your code like this:
angular.element(document.querySelector('#' + scope.uid)).css("top", "250px");
I am trying to create a directive that adds some html code but also adds additional attributes/directives.
Using the code below, an ng-class attribute is indeed added, but it seems angular does not recognize it as a directive anymore. It is there, but it has no effect.
How can I get it to work? Thanks.
The Angular code:
angular.module('myModule', [])
.directive('menuItem', function () {
return {
restrict: 'A',
template: '<div ng-if="!menuItem.isSimple" some-other-stuff>{{menuItem.name}}</div>'
+'<a ng-if="menuItem.isSimple" ng-href="{{menuItem.link}}">{{menuItem.name}}</a>',
scope: {
menuItem: '='
},
compile: function (element, attrs) {
element.attr('ng-class', '{active : menuItem.isActivated()}');
}
}
});
And the html:
<li menu-item="menuItem" ng-repeat="menuItem in getMenuItems()" />
EDIT:
The solution by #Abdul23 solves the problem, but another problem arises: when the template contains other directives (like ng-if) these are not executed. It seems the problem just moved.
Is it possible to also make the directives inside the template work?
Or perhaps insert the html using the compile function instead of the template parameter. Since I want a simple distinction based on some value menuItem.isSimple (and this value will not change), perhaps I can insert only the html specific to that case without using ng-if, but how?
You need to use $compile service to achieve this. See this answer.
For your case it should go like this.
angular.module('myModule', [])
.directive('menuItem', function ($compile) {
return {
restrict: 'A',
template: '<a ng-href="{{menuItem.link}}">{{menuItem.name}}</a>',
scope: {
menuItem: '='
},
compile: function (element, attrs) {
element.removeAttr('menu-item');
element.attr('ng-class', '{active : menuItem.isActivated()}');
var fn = $compile(element);
return function(scope){
fn(scope);
};
}
}
});
I have a angular directive to generate nested list structure. However when i get large data, browser gets stuck & is very slow. If it was only ng-repeat i could have used limitTo but this is a recursive template. Any suggestion please.
http://jsfiddle.net/L97o5swa/14/
treeModule.directive('tmTree', function() {
return {
restrict: 'E', // tells Angular to apply this to only html tag that is <tree>
replace: true, // tells Angular to replace <tree> by the whole template
scope: {
t: '=src',
fetchChildren: '&fetchChildren',
selectNode : '&selectNode' // create an isolated scope variable 't' and pass 'src' to it.
},
controller : function($scope){
console.log('aaa');
},
template: '<ul><branch ng-repeat="c in t.children" src="c" fetch-children="fetchChildren()" select-Node="selectNode({node :child})" ng-class="c.expandChildren ? \'\':\'collapsed\' "></branch></ul>' ,
link: function(scope, element, attrs) {
}
};
});
treeModule.directive('branch', function($compile) {
return {
restrict: 'E', // tells Angular to apply this to only html tag that is <branch>
replace: true, // tells Angular to replace <branch> by the whole template
scope: {
b: '=src',
fetchChildren: '&fetchChildren', // create an isolated scope variable 'b' and pass 'src' to it.
selectNode : '&selectNode'
},
controller : function($scope,$element){
} ,
template: '<li class="treeNode"><div class="wholerow"></div><span id="chevron-right" class="glyphicon glyphicon-chevron-right" ></span><a ng-click="selectNode({child : b})">{{ b.text }}</a></li>',
link: function(scope, element, attrs) {
//// Check if there are any children, otherwise we'll have infinite execution
var has_children = angular.isArray(scope.b.children);
var parent = scope.b;
//// Manipulate HTML in DOM
if (has_children) {
element.append($compile( '<tm-tree src="b" fetch-children="fetchChildren()" select-Node="selectNode({node:child})" ></tm-tree>')(scope) );
// recompile Angular because of manual appending
//$compile(element.contents())(scope);
}
var chevronRight = angular.element(element.children()[1]);
chevronRight.on('click',function(event) {
event.stopPropagation();
chevronRight.toggleClass('glyphicon-chevron-right');
chevronRight.toggleClass('glyphicon-chevron-down');
if(has_children){
element.toggleClass('collapsed');
if(scope.b.children.length == 0) {
}
}
});
}
};
});
Hard to tell based on the piece of code you posted. But my initial instinct is that you shouldn't be using so many jqLite references like element and append. You should handle more of this functionality within the template itself using ngRepeat (ie. if (has_children) { element.append...) and ngClick (ie. chevronRight.on('click'...). jqLite operations are expensive.
What I want to do is to append compiled template to some other DOM element in Angualrjs directive. Is it possible? How?
I know you can use transclude to include the template and keep content in the tag, but how do I attach my compiled template to other DOM element?
angular.module("my.directive")
.directive('passwordStrength', [function(){
return {
templateUrl: '/tpl/directive/passwordStrength.html',
restrict: 'A',
link: function postLink(scope, iElement, iAttrs){
console.log('password strength is running');
iElement.append($template) // problem here!!!
}
};
}]);
I'm not sure what you're trying to accomplish overall. You may want to use ng-include to pull in markup from a url, rather than using the templateUrl property, or you may want to use the templateUrl property on one directive, then make another directive and include that directive in the second directive. I made some sample directives to help give you ideas.
.directive('myDirective', function($compile) {
return {
scope: {
path: '=myDirective'
},
link: function(scope, element) {
// rather than use `templateUrl`, I'll get markup from the path using `ng-include`
var html = '<div ng-include="path"></div>';
// manipulate the markup however you want to
html+= '<p>More stuff from "myDirective"!</p>';
// append the markup
element.append(html);
// compile the markup so that Angular will know about it (or use the directive `compile` rather than `link`)
$compile(element.contents())(scope);
}
};
})
// this is sort of like "extending" the other directive.
.directive('myOtherDirective', function() {
return {
scope: {
path: '=myOtherDirective'
},
template: '<p>Stuff from "myOtherDirective"></div><div my-directive="path"></div>'
};
})
Here's a demo you can mess around with.
I've got an AngularJS directive that is not placing a string (intended to be a relative path to an image) inside one of the attributes in an HTML element and I'm at a loss as to why.
My item looks like the following:
item : {
name: 'Test Name',
link: 'Assets/logo.png'
}
If I step through the javascript, I'm correctly receiving the link from the webservice, so that's not the problem as my Angular controller properly shows the link in the $scope.
The following is what I have in the template for that controller that I'm having the problem with:
<my-directive name="{{item.name}}" link="{{item.link}}"></my-directive>
Here's the javascript for my directive:
angular.module('myModule').directive('myDirective', function() {
return {
restrict: 'E',
replace: true,
templateUrl: '/RelativePathToTemplateFile.html',
scope: {},
link: function($scope, element, attr, model) {
$scope.name = attr.name;
$scope.link = attr.link;
}
}
})
When I look at the rendered HTML, I have the following:
<div name="Test Name" link></div>
What's going on? How can I pass this link in properly?
Directive scope binding technique can resolve this issue. Try to use "#" to bind the directive property to the evaluated DOM attribute.
HTML
<div ng-controller="myCtrl">
<my-directive my-name="{{item.name}}" my-link="{{item.link}}"></my-directive>
</div>
Javascript
angular.module("myApp",[])
.controller("myCtrl",function($scope){
$scope.item = {
name:"Test Name",
link:"Assets/logo.png"
};
})
.directive("myDirective",function(){
return {
restrict: "E",
template: '<div name="{{myName}}" link="{{myLink}}">{{myName}}</div>',
replace: true,
scope:{
myName:"#",
myLink:"#"
}
};
});
Here is a jsFiddle DEMO, you could refer to it.
From the documentation:
function link(scope, element, attrs) { ... } where:
* scope is an Angular scope object.
* element is the jqLite-wrapped element that this directive matches.
* attrs is a hash object with key-value pairs of normalized attribute names and their corresponding attribute values.
so it's "attrs", not "attr"
try:
<myDirective name="item.name" link="item.link"></myDirective>
It will be better :)