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Could you explain please why the following directive doesn't work?
attrs.ngMydirective seems to be undefined inside the linking function.
Live example here
HTML:
<body ng-controller="MyCtrl">
<ul>
<li ng-repeat="person in people">
{{ person.name }}
<span ng-mydirective="{{ person.age }}"></span>
</li>
</ul>
</body>
JS:
var app = angular.module('myApp', []);
app.directive('ngMydirective', function() {
return {
replace: true,
link: function(scope, element, attrs) {
if (parseInt(attrs.ngMydirective, 10) < 18) {
element.html('child');
}
}
};
});
app.controller('MyCtrl', function($scope) {
$scope.people = [
{name: 'John', age: 33},
{name: 'Michelle', age: 5}
];
});
343
You should use attrs.$observe to have actual value.
Another approach is to pass this value to directive's scope and $watch it.
Both approaches are shown here (live example):
var app = angular.module('myApp', []);
app.directive('ngMydirective', function() {
return {
replace: true,
link: function(scope, element, attrs) {
attrs.$observe('ngMydirective', function(value) {
if (parseInt(value, 10) < 18) {
element.html('child');
}
});
}
};
});
app.directive('ngMydirective2', function() {
return {
replace: true,
scope: { ngMydirective2: '@' },
link: function(scope, element, attrs) {
scope.$watch('ngMydirective2', function(value) {
console.log(value);
if (parseInt(value, 10) < 18) {
element.html('child');
}
});
}
};
});
app.controller('MyCtrl', function($scope) {
$scope.people = [
{name: 'John', age: 33},
{name: 'Michelle', age: 5}
];
});
<body ng-controller="MyCtrl">
<ul>
<li ng-repeat="person in people">
{{ person.name }}
<span ng-mydirective="{{ person.age }}"></span>
</li>
<li ng-repeat="person in people">
{{ person.name }}
<span ng-mydirective2="{{ person.age }}"></span>
</li>
</ul>
</body>
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