Creating code in AngularJS

Question

Creating code in AngularJS

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?

javascript angularjs templates frameworks client-side

Answer 1

Answer №1

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.

Answer 2

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.

Answer 3

Answer №2

Not entirely certain if this aligns with your intentions:

http://jsfiddle.net/dMp55/

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...

Answer 4

Not entirely certain if this aligns with your intentions:

http://jsfiddle.net/dMp55/

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...

Answer 5

Answer №3

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 >

Answer 6

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 >

Creating code in AngularJS

Answer №1

Answer №2

Answer №3

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