My goal is to create a directive in AngularJS with a template that can contain other AngularJS directives. All of my directives require an "id" attribute, so I must set the "id" on the directive within the template. However, no matter how I attempt this, AngularJS consistently throws the following error:
Error: [$parse:syntax] Syntax Error: Token '{' invalid key at column 2 of the expression [{{field.id}}] starting at [{field.id}}].
http://errors.angularjs.org/1.4.6/$parse/syntax?p0=%7B&p1=invalid%20key&p2=2&p3=%7B%7Bfield.id%7D%7D&p4=%7Bfield.id%7D%7D
at angular.js:68
at Object.AST.throwError (angular.js:13010)
at Object.AST.object (angular.js:12997)
at Object.AST.primary (angular.js:12905)
at Object.AST.unary (angular.js:12893)
at Object.AST.multiplicative (angular.js:12880)
at Object.AST.additive (angular.js:12871)
at Object.AST.relational (angular.js:12862)
at Object.AST.equality (angular.js:12853)
at Object.AST.logicalAND (angular.js:12845)
I am aware that using
<div id="{{field.id}}">[...]</div><!-- results in shown error -->
<mydirective id="{{field.id}}"></mydirective>
<div mydirective id="{{field.id}}"></div>
<div class="mydirective" id="{{field.id}}"></div>
<mydirective ng-attr-id="{{field.id}}"></mydirective>
<div mydirective ng-attr-id="{{field.id}}"></div>
<div class="mydirective" ng-attr-id="{{field.id}}"></div>
<!-- results in id set to "field.id" -->
<mydirective id="field.id"></mydirective>
<div mydirective id="field.id"></div>
<div class="mydirective" id="field.id"></div>
<mydirective ng-attr-id="field.id"></mydirective>
<div mydirective ng-attr-id="field.id"></div>
<div class="mydirective" ng-attr-id="field.id"></div>
In case it adds clarity, here is the general layout of the directive with the template:
<div ng-repeat="field in fields" ng-show="field.visible">
<!-- some other stuff -->
<mydirective ng-if="field.type == 'foobar'" id="{{field.id}}"></mydirective>
<!-- some other stuff -->
</div>
I am facing a similar issue with another attribute on the directive, indicating that the problem is not exclusive to the 'id' attribute.
Here is a condensed version of the directive triggering the error:
var application = angular.module('application', []);
application = application.directive('mydirective', ['$http', function($http){
return {
restrict: 'AEC',
scope:{
mydirectiveId: '=id',
id : '@',
// few other attributes
},
templateUrl: 'mydirective.html',
controller: function ($scope, $element){
if($scope.id === undefined){
console.error("The 'id' attribute on mydirective is missing!");
}
// additional logic... cannot be included here
}
};
}]);