Laravel从ManyToOne关系错误SQLSTATE [23000]创建雄辩的实例

Question

我想使用Laravel 5 Eloquent Relationship创建实例。

我有2个迁移和2个雄辩的模型。

公司迁移：

use Illuminate\Database\Schema\Blueprint;
use Illuminate\Database\Migrations\Migration;

class CreateCompaniesTable extends Migration {

    public function up()
    {
        Schema::create('Companies', function(Blueprint $table)
        {
            $table->string('CompanyCode', 15);
            $table->string('Name', 200);
            $table->string('Type', 100);
            $table->tinyInteger('IsActive')->default(1);
            $table->timestamps();

            $table->primary('CompanyCode');
        });
    }

    public function down()
    {
        Schema::drop('Companies');
    }

}

公司型号：

namespace App\Models\Setting\Organization;

use Illuminate\Database\Eloquent\Model;

class Company extends Model {

    protected $fillable = ['CompanyCode', 'Name', 'Type'];

    public function organizationUnits(){
        return $this->hasMany('App\Models\Setting\Organization\OrganizationUnit', 'CompanyCode');
    }
}

OrganizationUnits迁移：

use Illuminate\Database\Schema\Blueprint;
use Illuminate\Database\Migrations\Migration;

class CreateOrganizationUnitsTable extends Migration {

    public function up()
    {
        Schema::create('OrganizationUnits', function(Blueprint $table)
        {
            $table->string('OrganizationUnitCode', 15); //PK
            $table->string('CompanyCode', 15); //FK
            $table->string('Name', 200);
            $table->tinyInteger('IsActive')->default(1);
            $table->timestamps();

            $table->primary('OrganizationUnitCode');
            $table->foreign('CompanyCode', 'OrgUnits_Company_FK')
                  ->references('CompanyCode')
                  ->on('Companies')
                  ->onDelete('cascade');
        });

    }

    public function down()
    {
        Schema::drop('OrganizationUnits');
    }

}

OrganizationUnit模型：

namespace App\Models\Setting\Organization;

use Illuminate\Database\Eloquent\Model;

class OrganizationUnit extends Model {

    protected $table = "OrganizationUnits";

    protected $fillable = ['OrganizationUnitCode', 'CompanyCode', 'Name'];

    public function company(){
        return $this->belongsTo('App\Models\Setting\Organization\Company', 'CompanyCode');
    }

}

关系是：一个公司可能拥有一个或多个OrganizationUnit，一个OrganizationUnit必须拥有一个且只有一个Company。

我试图使用以下代码在php artisan tinker创建OrganizationUnit的新实例：

$company = \App\Models\Setting\Organization\Company::first();
$orgunit = $company->organizationUnits()->create(['OrganizationUnitCode' => 'abcdef']);

但是Laravel给出以下错误：

带有消息'SQLSTATE [23000]的Illuminate \\ Database \\ QueryException：违反完整性约束：1048列'CompanyCode'不能为空（SQL：插入到'OrganizationUnits`（“ Org anizationUnitCode`，`CompanyCode`，`updated_at`，`created_at` ）值（abcdef，，2015-12-17 00:17:33，2015-12-17 00:17:33））'

我哪里做错了？ 请帮忙。 我是Laravel的新手。

Answer 1

明确指出CompanyCode不能为null。 您可以手动定义它，也可以在创建迁移时在Blueprint实例上使用increments方法。