laravel-5

Upgrade Guide 39
date format for serialized models, you may override the serializeDate(DateTime $date) method
on your model. This method allows you to have granular control over the formatting of serialized
Eloquent date fields without changing their storage format.
The Collection Class
The sort Method
The sort method now returns a fresh collection instance instead of modifying the existing collection:
1 $collection = $collection->sort($callback);
The sortBy Method
The sortBy method now returns a fresh collection instance instead of modifying the existing
collection:
1 $collection = $collection->sortBy('name');
The groupBy Method
The groupBy method now returns Collection instances for each item in the parent Collection. If
you would like to convert all of the items back to plain arrays, you may map over them:
1 $collection->groupBy('type')->map(function($item)
2 {
3 return $item->all();
4 });
The lists Method
The lists method now returns a Collection instance instead of a plain array. If you would like to
convert the Collection into a plain array, use the all method: