Laravel從ManyToOne關系錯誤SQLSTATE [23000]創建雄辯的實例

Question

我想使用Laravel 5 Eloquent Relationship創建實例。

我有2個遷移和2個雄辯的模型。

公司遷移：

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');
    }

}

公司型號：

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遷移：

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');
    }

}

關系是：一個公司可能擁有一個或多個OrganizationUnit，一個OrganizationUnit必須擁有一個且只有一個Company。

我試圖使用以下代碼在php artisan tinker創建OrganizationUnit的新實例：

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

但是Laravel給出以下錯誤：

帶有消息'SQLSTATE [23000]的Illuminate \\ Database \\ QueryException：違反完整性約束：1048列'CompanyCode'不能為空（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））'

我哪里做錯了？ 請幫忙。 我是Laravel的新手。

Answer 1

明確指出CompanyCode不能為null。 您可以手動定義它，也可以在創建遷移時在Blueprint實例上使用increments方法。