I got a variable in my angularjs scope like this:
function MyCtrl($scope) {
$scope.myvar = "{{'i want to translate this' |translate}}" + "{{' and this' |translate}}" + " but not this" ;
}
The translate is a custom filter which translates to french.
In the html:
{{myvar}}
I want to display "myvar" in the html but it displays the '{{' & '}}'.
I made a jsfiddle here
As per your jsfiddle code:
<div ng-controller="MyCtrl">
{{myvar}}
</div>
You've not used ng-app="myApp" directive anywhere. So angular know that which part of the HTML it need to bootstrap as angular app.
Another thing, you must avoid using global functions as controllers. Instead use
angular.module("myApp", [])
.controller("MyCtrl", MyCtrl);
Still you can't have
{{'i want to translate this' |translate}}" + "{{' and this' |translate}}
in your controller. instead you must use $filter and do the filtering in controller and just return the string.
$scope.myVar = $filer("translate")("i want to translate this") + $filer("translate")(" and this");
Inject $filter to your controller.
So, to start I have added some code to your jsfiddle and got it working. It renders your myvar.
var myApp = angular.module('myApp',['controllers']);
var controllers = angular.module('controllers', []);
controllers.controller('MyCtrl', ['$scope', function ($scope) {
$scope.myvar = "{{'i want to translate this' |translate}}" + "{{' and this' |translate}}" ;
}]);
Also see jsfiddle.
You can find a "working" fiddle based on the good advice from #mohamedrias here. By "working" I mean ng-app is properly declared in the html and your bindings are working. I agree with the advice already shared. Apply your filter logic within the controller. Then you could set the result to something like vm.myTranslatedVar and bind to that in your html with {{ vm.myTranslatedVar }}. vm simply stands for "view model" and sets your controller's scope rather than using $scope.
Related
I have a simple angular snippet
<div ng-app="myApp" ng-controller="myCtrl">
<input ng-model="name">
<h1>My name is {{name}}</h1>
</div>
<script>
var app = angular.module('myApp', []);
app.controller('myCtrl', function($scope) {
$scope.name = "John Doe";
$scope.age = "26";
$scope.height = "5.9";
$scope.gender = "M";
});
</script>
As you can see I have 4 variables declared in my myCtrl controller
$scope.name = "John Doe";
$scope.age = "26";
$scope.height = "5.9";
$scope.gender = "M";
Is there a way to programmatically list of all the declared $scope variables of a specific angular controller?
Why am I trying to do this ?
Sometimes, when you’re deep in 1000 lines of code in an angular controller, it will be very helpful to know what are the available variables to use at that specific moment. First, the benefit would be, so we don’t re-declare something that already been declared, and second, so we don't override an existing variable unintentionally. For those 2 reasons alone, that's why I am trying to list all the available $scope variables, especially the one that I declared in on that specific page, or in a specific controller of Angular.
NOTE : I am NOT looking to list all JS scope variables, but only looking for those one that I declared in Angular
I know exactly what you need and I use this lib extensively to show me my objects like Chrome does.
Angular json formatter
And the beauty is that it updates instantly with Angular magic. So you know the current state of your object at all times!
Simply drop this directive in your html and assign $scope to it.
I thought there was a way that I can just display something on the page and not have AngularJS check it for changes.
Can someone tell me how to do this? Is it just if I have a label like this:
{{ abc }}
You may use binding like this {{::abc}} so you app will not watch for changes after first render of the data. See one-time-binding doc
It is a scope variable. Means your controller has an scope object as $scope if you define any variable like $scope.abc = "string". then a new property called abc will be created in your controller scope.
In AngularJS scope object was always watched and once any change in that object made it will reflect in the view.
Thankfully, Angular 1.3 and up versions has put a lot of effort into performance with the feature One-time binding using {{ ::abc }} works:
angular
.module('MyApp', [])
.controller('MyController', function($scope, $timeout) {
$scope.abc = 'Some text'
$timeout(function() {
$scope.abc = 'new value';
console.log('Changed but not reflected in the view:', $scope.abc);
}, 1000);
});
<script src="https://cdnjs.cloudflare.com/ajax/libs/angular.js/1.3.0/angular.js"></script>
<div ng-app="MyApp" ng-controller="MyController">
<p>{{ ::abc }}</p>
</div>
As there is a two-way data binding, angular will watch for any changes on the variable $scope.abc and update the DOM with the changes. However if you want to make sure it does not watch for any changes you can go for the one-way binding, where any change made to the variable will not be watched upon by angular. You can do this using by {{::abc}} or ng-bind="::abc".
For example refer - https://jsfiddle.net/m8L2pogg/
In my mine file I have the div with ng-view and it is loaded with the some template. Inside the temp`late I have a button which will change the value.
after to click the button, I am trying to show the value in the index but I recieving a null value.
In index.html I could have something like:
<html>
...
<body ng-app="productsApp" ng-Controller="mycontroller">
<div ng-view></div>
{{value}}
</body>
</html>
In my controller I have something like
angular.module('productsApp').controller('ProductController',
['$scope', 'dataService', function ($scope, dataService) {
$scope.value;
$scope.button = function () {
$scope.value= "123";
};
}]);
The template could be something like:
<button ng-click="button">CHANGE</button>
How can I assign values to main page from templates and show them?
You need to beware which controller you set, the names have to match. Also beware of typos, even when typing fast ;). Also look into the function call. You forgot to use () at the end. And naming things a little bit better would be recommended to (I don't say my namings are the best, but calling a function button is not very readable).
HTML
<body ng-controller="MainCtrl">
<p>Value {{value}}!</p>
<button ng-click="btnPressed()">Change</button>
</body>
JS
var app = angular.module('plunker', []);
app.controller('MainCtrl', function($scope) {
$scope.value = "456";
$scope.btnPressed = function() {
$scope.value = 123;
}
});
The controllers name in this example is MainCtrl. You need to refer the correct name as well in your HTML (you mix mycontroller and ProductController).
Working Plnkr
http://plnkr.co/edit/tpl:8rFfZljYNl3z1A4LKSL2
You have defined $scope.button in ProductController which set $scope.value.
But this $scope.value is come under scope of ProductController and not available under scope of mycontroller which parent scope.Thats why you getting null value.
Define $scope.value and $scope.button in mycontroller.
Or better way is define this functionality in some factory and access it wherever needed.
Or define that function and variable in $rootScope like
$rootScope.value;
but it make this global.
or define like this
$scope.$parent.value;
I am new to Angular getting stuck after making ajax call. How do I render/compile the html content once you inject in DOM so that I can still use the AngularJs functions.
Due to the way my backend is set up I have to get content via ajax ($http). And I am making the app without jQuery. I tried $compile and $apply but didn't work. What am I missing here.
I have the code set up at http://jsfiddle.net/rexonms/RB7FQ/3/ . I want the second div content to have the same properties as the first div.
HTML
<div ng-controller="MyCtrl" class="section">
<input ng-model="contentA">
<div>
And the input is: {{contentA}}
</div>
</div>
<div ng-controller="MyAjax" class="section">
<div id="dumpAjax">
{{ajaxData}}
</div>
<button ng-click=getajax()> Get Ajax</button>
</div>
SCRIPT
var myApp = angular.module('myApp',[]);
//myApp.directive('myDirective', function() {});
//myApp.factory('myService', function() {});
function MyCtrl($scope) {
}
function MyAjax($scope){
var data = '<input ng-model="contentB">{{contentB}}';
$scope.getajax = function(){
$scope.ajaxData = data;
}
}
Thanks in advance.
ng-bind-html-unsafe is not available 1.2 and later verison of angular...
so you should use ng-bind-html which creates a binding that will innerHTML the result of evaluating the expression into the current element in a secure way.
using $scope variable in your string make it unsafe, so you should use $sce.trustAsHtml but this time variables in your string cannot be bind because they will be not compiled...
basically you should compile your string in order to bind your variables. Here comes custom directives you can create a directive which can replace with ng-html-bind...
Writing a custom directive which extends ng-bind-html with some extra functions can be a solution...
here is my PLUNKER
and here is your updated JSFIDDLE with my solution...
Instead of {{ajaxData}}, you should use something like:
<div ng-bind-html-unsafe="ajaxData"></div>
However, you'd still need to set the proper model to bind the contentB and get it working.
If I want only 20 iteration, how can I repeat my block?
It isnt work:
<div ng-repeat="item in _.range(20)"></div>
UnderscoreJS included in the page
If you want to use undersore's functions in your template you will have to expose it on a scope. If you want to have it available in all templates one way of doing so would be:
var app = angular.module('angularjs-starter', []);
app.run(function($rootScope){
$rootScope._ = _;
});
Then you could use it in a template as you've tried:
<div ng-repeat="item in _.range(20)">{{item}}</div>
Here is a working plunk: http://plnkr.co/edit/1Va4EikvRyFiQvhb2HYV?p=preview
While the above works it shouldn't be used. Model should be initialized in a controller. Otherwise AngularJS will execute _range on each $digest cycle to generate a new array.