Angular orderBy object possible?
You should be able to define a custom sort function that sorts by any item in your object. The key bit is to convert the object to an array in the filter function.
Here's an example:
app.filter('orderByDayNumber', function() { return function(items, field, reverse) { var filtered = []; angular.forEach(items, function(item) { filtered.push(item); }); filtered.sort(function (a, b) { return (a[field] > b[field] ? 1 : -1); }); if(reverse) filtered.reverse(); return filtered; };});You would then call it like this:
<div ng-repeat="(key, val) in cal | orderByDayNumber: 'day' ">Note, you shouldn't write val.day as that is assumed.
Look at this great blog post here for more info.
EDIT: In fact, it looks like your structure is actually already an array, so while this technique will still work, it may not be necessary - it might have just been the way you were adding the parameter to orderBy that was causing issues.