Laravel 未命名 id 列的迁移 "id" 导致错误

Question

如何创建不同于“id”的 id / 主键列？当我尝试它时，它会产生错误。

class CreateEmployeesTable extends Migration
{
// ...
    public function up()
    {
        Schema::create('employees', function (Blueprint $table) {
            $table->id('employee_id');
            $table->string('first_name', 100);
            $table->string('last_name', 100);
            $table->string('email', 200);
            $table->timestamps();
        });
    }
// ...
}

尝试一下：

php artisan tinker
Psy Shell v0.10.8 (PHP 7.3.20 — cli) by Justin Hileman
>>> $employee = new App\Models\Employee
=> App\Models\Employee {#3452}
// ...
>>> $employee->save();
<warning>PHP Warning:  oci_execute(): ORA-00904: "ID": invalid identifier in <path>Statement.php on line 159</warning>
Yajra\Pdo\Oci8\Exceptions\Oci8Exception with message 'Error Code    : 904
Error Message : ORA-00904: "ID": invalid identifier
Position      : 132
Statement     : insert into "EMPLOYEES" ("FIRST_NAME", "LAST_NAME", "EMAIL", "UPDATED_AT", "CREATED_AT") values (:p0, :p1, :p2, :p3, :p4) returning "ID" into :p5
Bindings      : [Roger,Rabbit,rrabbit@somewhere.com,2021-11-04 22:13:56,2021-11-04 22:13:56,0]

Answer 1

id() id 方法是 bigIncrements 方法的 alias。默认情况下，该方法将创建一个 id 列； $table->id();

bigIncrements() bigIncrements 方法创建一个自动递增的 UNSIGNED BIGINT（主键）等效列：

$table->bigIncrements('employee_id');

Answer 2

当您在 table 而非 id 中使用主键时，您需要在模型 class 和

中指定它

class Employee extends Model
{
    /**
     * The primary key associated with the table.
     *
     * @var string
     */
    protected $primaryKey = 'employee_id';
}

Laravel 未命名 id 列的迁移 "id" 导致错误

Laravel migration where id column not named "id" causes error

database-migration

laravel

eloquent