jandres:template-attribute-directive

Enables simple angular attribute directives. "Simple" because this can only handle DOM attributes, not blaze attributes. This rules out the possibility of handing down a function or any reactive attributes. None the less, there is still a big use case.

Example:

The following is an example usage from jandres:ionic@1.2.4.alpha.10:

import { TemplateAttributeDirectiveType } from 'meteor/jandres:template-attribute-directive';

let ionNavDirection = new TemplateAttributeDirectiveType('ionNavDirection', {
    $postLink($scope, $element, $attr) {
        $element.bind('click', function() {
            // Note: ionnavdirection instead of ionNavDirection due
            //       to Node.attributes lowercasing.
            $ionicViewSwitcher.nextDirection($attr.ionnavdirection);
        });
    }
});

export { ionNavDirection };

Then in somewhere in your template:

{{#ionContent}}
    <div class="padding" ionNavDirection="back">
        <a href="{{pathFor 'navigation'}}" class="button button-stable" data-nav-direction="back"><i class="icon ionic-ios-arrow-back"></i> Back</a>
        <a href="{{pathFor 'navigation.two'}}" class="button button-stable"><i class="icon ionic-ios-arrow-forward"></i> Forward</a>
    </div>
{{/ionContent}}

Hooks:

During constructor of the TemplateAttributeDirectiveType you can pass:

1. $preLink: Called while traversing downwards the template from root template.
2. $postLink: Called while traversing upwards the template from leaf templates.

And in these, two hooks you are given:

1. $scope: From jandres:template-scope which emulates angular $scope.
2. $element: The element in which the attribute is attached.
3. $attr: The dictionary of attributes and their value (if any). This includes the current directive. There is only one problem, these will be lowercase. This will hopefully be addressed in the future.

That being said, you can emulate onDestroyed callback via:

$scope.$on('$destroy', function() {
  // Destroy stuff and what not.
});