I create directives that use a publish/subscribe pattern. They subscribe
to a data channel, and when data is there, they populate a view model. In
this way they are not concerned with how the data get's there, just what to
do when it is. Here is a sample of the link function:
_link = function(scope, element, attributes) {
var _modelChannel = attributes['subscribe'];
angular.extend(scope, { viewModel: {}, modelChannel: _modelChannel });
// listen for changes to the view model and add to scope on change
_pubsub.subscribe(_modelChannel,
function(data) {
angular.extend(scope, { viewModel: data });
});
}
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