Laravel 5.2 数据库模式自行创建一个唯一列

Question

我有以下用于创建地址的架构 table:

Schema::create('addresses', function (Blueprint $table) {
    $table->string('id')->index();
    $table->string('street', 100);
    $table->integer('number', 5);
    $table->string('addition', 10);
    $table->string('postal_code', 7);
    $table->string('place', 45);
    $table->string('country', 45);
    $table->timestamps();
    $table->softDeletes();
});

出于安全原因，'id' 是随机生成的唯一字符串，而不是自动递增整数。

只有一个问题：Laravel 使列 'number' 唯一，因为它是唯一具有整数数据类型的列。我们希望列 'id' 作为主键和唯一键。

我们也试过这个：

$table->primary('id')->index();
$table->uuid('id')->index();
$table->string('id')->primary()->index();

我仍然收到此错误：

Integrity constraint violation: 19 UNIQUE constraint failed:
addresses.number

Answer 1

我确实遇到了这个问题。查看这篇文章：http://garrettstjohn.com/article/using-uuids-laravel-eloquent-orm/

几乎正在发生的事情是 Laravel "says" 他们支持 UUID，但他们确实需要帮助。

您的架构会起作用，但为了确定起见，我这样使用它：

$table->primary('id');

使用本文提供的示例后，您应该有类似的东西（这是我的用户模型）：

<?php

namespace App;

use Illuminate\Foundation\Auth\User as Authenticatable;
use Illuminate\Database\Eloquent\SoftDeletes;

class User extends Authenticatable
{

    // UuidForKey is a custom trait added in the app folder
    use SoftDeletes, UuidForKey;

    // This disabled the auto-incrementing
    public $incrementing = false;

    // Make sure id is set as primary
    protected $primaryKey = "id";

    // Makes sure that the id is a string and not an integer
    protected $casts = [
        'id' => 'string',
    ];

    /**
     * The attributes that are mass assignable.
     *
     * @var array
     */
    protected $fillable = [
        'firstname',
        'lastname',
        'email',
        'password',
        'role',
        'active',
    ];

    /**
     * The attributes excluded from the model's JSON form.
     *
     * @var array
     */
    protected $hidden = [
        'password', 'remember_token',
    ];
}

Answer 2

这对我有用：

Schema::create('addresses', function (Blueprint $table) {
      $table->uuid('id')->primary();
      $table->integer('number', false);
  });

Laravel 5.2 数据库模式自行创建一个唯一列

Laravel 5.2 database scheme creates an unique column by it self

php

laravel

database-schema

laravel-5.2