I have the following template structure:
<h1 class="text-center" ng-bind-html="row.text"></h1>
When the content of my row.text is a string like this:
Hi your name is {{ name }}
It will display as shown below:
Hi your name is {{ name }}
Instead of rendering the actual value stored in {{ name }}.
Should I evaluate or compile the expression within row.text?
1: Upon thorough investigation of the issue, I discovered a method to parse a string that may contain AngularJS expressions.
If your $scope is as follows: { "name": "my name" }
And the string expression is stored in variable v: var v = "Hello, {{ name }}"
var exp = $interpolate(v);
var result = exp($scope);
The resulting text in the variable will be: Hello, my name
I then proceeded to inject the answer into the scope variable.
One drawback to note is that once this process is completed, the result becomes a static string and any subsequent changes to the "name" variable in the scope will not reflect on the evaluated expression.
Reference: AngularJS $interpolate
2: If maintaining data binding is crucial, an alternative approach would be to create a custom template string such as "Hello {{ name }}"
and compile it like so:
$compile($scope.row.text)($scope)
Reference: AngularJS $compile
After testing both methods within a directive, I can confirm that they are functioning correctly now.
Not entirely certain if this aligns with your intentions:
HTML
<div ng-app="ngAppDemo">
<div ng-controller="ngAppDemoController">
I can calculate: {{a}} + {{b}} = {{ a+b }}
<p ng-bind-html-unsafe="myHTML"></p>
</div>
</div>
JS
angular.module('ngAppDemo', []).controller('ngAppDemoController', function($scope) {
$scope.a = 1;
$scope.b = 2;
$scope.myHTML = '{{a}}';
});
Output
I can calculate: 1 + 2 = 3
{{a}}
It seems like evaluating or compiling the text may be necessary...
I managed to resolve this issue by leveraging the $templateCache in the following manner:
Inside the Controller:
myApp.controller('RowCtrl', function ($scope, $templateCache) {
$scope.row = {
id: 2,
text: '{{ name }}'
};
var row_tmpl = 'row-tmpl-' + row['id'];
$templateCache.put(row_tmpl, row.text);
$scope.row_tmpl = row_tmpl;
});
In the Template:
<div ng-include src="row_tmpl" >
</div >
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