Directive to show error messages - angularjs

Question

I have validation set up, and am using ngMessages to show errors. However I want to create a wrapper directive around ngMessages that adds some HTML (to avoid a lot of code duplication).
So instead of having to write this on each input:
<div class="help-block validator">
<div ng-messages="registerForm.email.$error" ng-if="registerForm.email.$touched">
<p ng-message="required">This field is required.</p>
</div>
</div>
I'd just write something like this:
<error-message messages='{"required": "This field is required."}' error="registerForm.email.$error" touched="registerForm.email.$touched"></error-message>
The issue with my directive is that error and touched come up as strings, they don't get evaluated as JS expressions. I've tried to $eval them, but that throws an error.
Here's my directive:
angular
.module('myApp')
.directive("errorMessage", function () {
return {
restrict: "E",
replace: true,
scope: {
'messages': '=',
'error': '=',
'touched': '='
},
template: '<div class="help-block validator">' +
'<div ng-messages="error" ng-if="touched">' +
'<div ng-repeat="(key, message) in messages">' +
'<p ng-message="key">{{message}}</p>' +
'</div>' +
'</div>' +
'</div>',
link: function (scope, elem, attrs) {
scope.error = attrs.error;
scope.touched = attrs.touched;
scope.messages = scope.$eval(attrs.messages); // this works
}
};
});
Any idea how I should go about doing this?

Answer 1

Found the issue. Looks like attrs wasn't what I needed. The properties were already in the scope. The code I ended up with is:
angular
.module('myApp')
.directive("errorMessage", function () {
return {
restrict: "E",
replace: true,
scope: {
'messages': '=',
'error': '=',
'touched': '='
},
template: '<div class="help-block validator">' +
'<div ng-messages="error" ng-if="touched">' +
'<div ng-repeat="(key, message) in messages">' +
'<p ng-message="{{key}}">{{message}}</p>' +
'</div>' +
'</div>' +
'</div>',
link: function (scope, elem, attrs) {
}
};
});

Answer 2

I think ng-message-include meets your requirements. we can create new html file and place all of our messages in this file and just call it with ng-messages-include.
hope my answer is usable for you.