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[7.x] Note about serializing value objects #6123

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2 changes: 2 additions & 0 deletions eloquent-mutators.md
Original file line number Diff line number Diff line change
Expand Up @@ -316,6 +316,8 @@ When casting to value objects, any changes made to the value object will automat

$user->save();

> {tip} If you plan to serialize your Eloquent models containing value objects to JSON or arrays, you should implement the `Illuminate\Contracts\Support\Arrayable` and `JsonSerializable` interfaces on the value object.

#### Inbound Casting

Occasionally, you may need to write a custom cast that only transforms values that are being set on the model and does not perform any operations when attributes are being retrieved from the model. A classic example of an inbound only cast is a "hashing" cast. Inbound only custom casts should implement the `CastsInboundAttributes` interface, which only requires a `set` method to be defined.
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