How do you create an application/ld+json
script
tag with a dynamically built JSON object in AngularJS .
This is what I need the script tag to look like
<script type="application/ld+json">
{
"@context": "http://schema.org",
"@type": "Place",
"geo": {
"@type": "GeoCoordinates",
"latitude": "40.75",
"longitude": "73.98"
},
"name": "Empire State Building"
}
</script>
I have tried the following code but I cant get it to work:
HTML
<div ng-controller="TestController">
<script type="application/ld+json">
{{jsonId|json}}
</script>
{{jsonId|json}}
</div>
Controller
var myApp = angular.module('application', []);
myApp.controller('TestController', ['$scope', function($scope) {
$scope.jsonId = {
"@context": "http://schema.org",
"@type": "Place",
"geo": {
"@type": "GeoCoordinates",
"latitude": "40.75",
"longitude": "73.98"
},
"name": "Empire State Building"
};
}]);
The expression inside the script tag does not execute. The expression outside the script tag executes correctly and displays the JSON
Please see jsfiddle
After a cup of coffee I remembered there is a $sce
service with a trustAsHtml
function.
I created a directive that accepts a json
parameter for easy re-use
Please see updated and working code below:
HTML
<div ng-controller="TestController">
<jsonld data-json="jsonId"></jsonld>
</div>
Javascript
var myApp = angular.module('application', []);
myApp.controller('TestController', ['$scope', function($scope) {
$scope.jsonId = {
"@context": "http://schema.org",
"@type": "Place",
"geo": {
"@type": "GeoCoordinates",
"latitude": "40.75",
"longitude": "73.98"
},
"name": "Empire State Building"
};
}]).directive('jsonld', ['$filter', '$sce', function($filter, $sce) {
return {
restrict: 'E',
template: function() {
return '<script type="application/ld+json" ng-bind-html="onGetJson()"></script>';
},
scope: {
json: '=json'
},
link: function(scope, element, attrs) {
scope.onGetJson = function() {
return $sce.trustAsHtml($filter('json')(scope.json));
}
},
replace: true
};
}]);
Here is a image of the script output
Please see updated jsfiddle
Tjaart van der Walt's answer did not work for me in the Google Test Tool . It did work with the real crawler. So I found another "old-school" solution which did the trick:
HTML
<script type="application/ld+json" id="json-ld-music-group"></script>
Angular
var schemaOrg = angular.toJson({
'@context': 'http://schema.org',
'@type': 'MusicGroup',
...
});
angular.element(document).ready(function() {
var jsonLd = angular.element(document.getElementById('json-ld-music-group'))[0];
jsonLd.innerHTML = schemaOrg;
});
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