AngularJS ng-options custom attribute
angularjs, javascript, ng-options, select
Solution
Maybe someone will correct me but I'm pretty sure you won't get this kind of control out of `ng-options`. Angular manages the select behind the scenes for you when you use this, which is nice 90% of the time but can be limiting in situations like yours. I'm not sure what benchmarks you're looking at but I'd be willing to bet an `ng-repeat` on the option elements is comparable in performance to using `ng-options`.
I'd go with something like this:
<select ng-model="selectedExportType">
<option ng-repeat="exportType in exportTypes" data-generates-file="{{exportType.generatesFile}}" value="{{exportType.value}}">
{{exportType.title}}
</option>
</select>
Edit:
Of course, this assumes you really do need that attribute on there. If all you need is access to that attribute on select then this is where `ng-options` shines. Simply remove the `option.value as` bit from your select and then you get the whole object back from your array when you make a selection.
http://plnkr.co/edit/6XPaficTbbzozSQqo6uE?p=preview
You can see in that demo that the selected item is the whole object, complete with `someAttr` property which was never used in the select at all. If you inspect the DOM you won't see it. Angular tracks all this behind the scenes.
Problem
I currently have the following directive on my `select`. `ng-options="option.value as option.title for option in exportTypes"` $scope.exportTypes = an array of objects each with `title`, `value`, and `generatesFile` attributes. I'd like the `generatesFile` attribute to be added as a `data-generates-file` attribute on each `<option>` that is generated for this select. Any thoughts on how to do this?