Default random value in Laravel models

Question

I am trying to set up a random default value for a Laravel model so that when a user registers a random value is saved to the database for each user.

I've looked at similar question on StackOverflow which explains how to setup a default value using the $attributes variable but it doesn't explain the random bit.

My problem isn't regarding generating a random value but rather how one can be binded to a Laravel model by default — Petar Vasilev, Nov 11 '15 at 13:04

Dracony · Accepted Answer · 2015-11-11T13:47:42.650

3

Override the save method of your model:

public function save(array $options = array())
{
    if(empty($this->id)) {
        $this->someField = rand();
    }
    return parent::save($options);
}

edited Nov 11 '15 at 13:47

answered Nov 11 '15 at 13:15

Dracony

842
6
15

Got the following error when I tried the code: ErrorException in User.php line 16: Declaration of App\User::save() should be compatible with Illuminate\Database\Eloquent\Model::save(array $options = Array) – Petar Vasilev Nov 11 '15 at 13:45

score 1 · Answer 2 · answered Nov 11 '15 at 13:15

1

For bind a field default when save model follow this

public static function boot()
{
    parent::boot();
    static::creating(function($post)
    {
            $post->created_by = Auth::user()->id;
    });
}

answered Nov 11 '15 at 13:15

Imtiaz Pabel

5,307
1
19
24

score 0 · Answer 3 · answered Nov 11 '15 at 13:16

You're not providing enough info, so I'm giving you a solution: you can use a MUTATOR in your User Model:

class User extends Model {
    public function setRandomStringAttribute($number)
    {
       $this->attributes['random_string'] = str_random($number);
    }
}

Where "random_string" is the column in your user table that holds the value. In this way each time you set the "random_string" property of a Model it's automatically set as defined. You simply use it like this:

$user = new User;
$user->random_string = 20;
$user->save();

Default random value in Laravel models

3 Answers3

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