从数据库架构设置默认属性值

Question

Is it possible for Laravel to set default attribute values for model from database, when creating object by new Model or Model::create() ?

For example, I have table clients with some columns (name, sex, birthday, device, os, etc). I'm doing

$client = new Client::create(['name' => 'John Doe']);

and want $client object has all attributes, not only name. dd($client->toArray()); returns

array:1 [▼
  "name" => "John Doe",
  "id" => 1
]

But dd(Client::find(1) returns

array:11 [▼
  "id" => 1
  "name" => "John Doe"
  "birthday" => null
  "sex" => 1
  "device" => ""
  "os" => ""
]

Yes, i could set protected $attributes property in model, but it is not what i'm looking for. I want this to be fetched from database schema.

Answer 1

You could override the __construct() function to merge in any missing attributes.

So in your model...

protected $defaults = [
    'sex' => 1,
    'device' => 'AAA',
    'os' => 'BBB',
];

public function __construct($attributes = [])
{
    $attributes = array_merge($this->defaults, $attributes);

    parent::__construct($attributes);
}