Laravel UUID generation

After laravel 5.6 a new helper was added to generate Universal Unique Identifiers (UUID)

use Illuminate\Support\Str;

return (string) Str::uuid();

return (string) Str::orderedUuid();

The methods return a Ramsey\Uuid\Uuid object

The orderedUuid() method will generate a timestamp first UUID for easier and more efficient database indexing.

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In Laravel 5.6+

use Illuminate\Support\Str;

$uuid = Str::uuid()->toString();

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Turns out I had to use $uuid->string to get the actual ID, the whole object shows empty if you try to return it in a json response.

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It's possible that $uuid is empty because your system doesn't provide the right kind of entropy. You might try these library implementations for either a v4 or v5 UUID:

// https://tools.ietf.org/html/rfc4122#section-4.4
function v4() {
    $data = openssl_random_pseudo_bytes(16, $secure);
    if (false === $data) { return false; }
    $data[6] = chr(ord($data[6]) & 0x0f | 0x40); // set version to 0100
    $data[8] = chr(ord($data[8]) & 0x3f | 0x80); // set bits 6-7 to 10
    return vsprintf('%s%s-%s-%s-%s-%s%s%s', str_split(bin2hex($data), 4));
}

// https://tools.ietf.org/html/rfc4122#section-4.3
function v5($name) {
    $hash = sha1($name, false);
    return sprintf(
        '%s-%s-5%s-%s-%s',
        substr($hash,  0,  8),
        substr($hash,  8,  4),
        substr($hash, 17,  3),
        substr($hash, 24,  4),
        substr($hash, 32, 12)
    );
}

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add column in table name 'Uuid', type 'char' length 36 create folder name 'Traits' inside Models folder Create file name Uuid.php inside Traits folder

Uuid.php

<?php

namespace App\Models\Traits;

use Ramsey\Uuid\Uuid as PackageUuid;

trait Uuid
{

    public function scopeUuid($query, $uuid)
    {
        return $query->where($this->getUuidName(), $uuid);
    }

    public function getUuidName()
    {
        return property_exists($this, 'uuidName') ? $this->uuidName : 'uuid';
    }

    protected static function boot()
    {
        parent::boot();

        static::creating(function ($model) {
            $model->{$model->getUuidName()} = PackageUuid::uuid4()->toString();
        });
    }
}

add 'use Uuid' inside your model

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Try to use this package will automatically generate and assign UUID field in your model, also can show and update by UUIDs key.

https://github.com/EmadAdly/laravel-uuid

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for laravel < 5.6

use DB::raw('uuid()');

please have a look at below example

inside model

use Illuminate\Support\Facades\DB;


public static function boot(){
    parent::boot();
    $creationCallback = function ($model) {
        if (empty($model->{$model->getKeyName()}))
            $model->{$model->getKeyName()} = DB::raw('uuid()');
    };
    static::creating($creationCallback);
}

Pros

--You don't have to use any third-party plugin to get UUID in case you are using laravel < 5.6

Cons

after saving the data using ORM you need to query again to get the last inserted id otherwise you will get uuid().

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