AngularJS: How to pass arguments/functions to a directive?

Question

Look at this Fiddle, what do I have to change, that the expressions in the template get evaluated using the arguments I defined in the HTML? The SAVE-button should call the blabla()-function of the controller, since I pass it?

var myApp = angular.module('MyApp',[]) myApp.directive('editkeyvalue', function() { return { restrict: 'E', replace: true, scope: { accept: "expression" }, template : '<div><label class="control-label">{{key}}</label>' + '<label class="control-label">{{key}}</label>' + '<input type="text" ng-model="value" />'+ '<button type="button" x-ng-click="cancel()">CANCEL</button>' + '<button type="submit" x-ng-click="save()">SAVE</button></div>', controller: function($scope, $element, $attrs, $location) { $scope.save= function() { $scope.accept(); }; } } });

I do not really see through that. Thanks for help!

jaime · Accepted Answer · 2012-12-05 16:16:00Z

You can set two way data binding with property: '=' as Roy suggests. So if you want both key and value bound to the local scope you would do

scope: { key: '=', value: '=' },

Since you are passing these values, you have access to them in your directive's controller. But in case you want to run a function in the context of the parent scope, which seems to be what you want to do with the accept attribute, then you would need to tell angular like this

scope: { accept: "&" }

Now, from your save method you could call the function passed via accept

controller: function($scope, $element, $attrs, $location) { $scope.save= function() { $scope.accept() }; }

Here's a jsfiddle

Any way to pass a variable from the directive to the function passed to it?
Found the answer to my own question. You have to name the parameters involved. Found answer here: whatibroke.com/?p=894

user1972450 · Accepted Answer · 2013-09-15 07:50:21Z

15

scope: { accept: "&" }

Use lowercase letters for function names, otherwise it doesn't work.

answered Sep 15, 2013 at 7:50

user1972450

2 Comments

mccc Over a year ago

Why does this kind of stuff come out only on Friday afternoons? Thanks, mate.

aw04 Over a year ago

You don't need to use lowercase letters, just know that if you write it like 'acceptSomething' you will refer to it as 'accept-something' in markup

Gary Blake · Accepted Answer · 2015-03-30 17:54:10Z

Just a quick note that you dont need the wrapping function save. Just call this in the template:

'<button type="submit" x-ng-click="accept()">SAVE</button></div>',

That transposes the function call and passes the parameters as expected.

This simplifies code and makes it a lot easier to read.

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