SQLSTATE [HY000]：一般错误：1364 字段 'uID' 没有默认值

Question

刚开始使用 Laravel。我已将我的用户和配置文件模型与配置文件控制器一起附加。我的目标是自动在 profile 表中分配外键 uID。任何帮助将不胜感激。

用户模型文件

namespace App;

use Illuminate\Database\Eloquent\Model;

class user extends Model
{
    // specify which attributes can be filled out during registration
    public $timestamps = false;
    protected $fillable=['firstname','lastname','email','password',];

    public function profile(){
      return $this->hasOne(profile::class,'pID','uID');
    }
}

轮廓模型文件

namespace App;

use Illuminate\Database\Eloquent\Model;

class profile extends Model
{
    //
    public $timestamps = false;
    protected $fillable = ['summary','uID'];

    public function user(){
      return $this->belongsTo(user::class,'uID','pID');
    }
}

配置文件迁移文件

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

class CreateProfilesTable extends Migration
{
    public function up()
    {
      // create profile table
        Schema::create('profiles', function (Blueprint $table) {
            $table->increments('pID');
            $table->timestamp('created_at')->useCurrent();
            $table->string('summary')->default('');
            $table->integer('uID')->unsigned();

            $table->foreign('uID')->references('uID')->on('users')->onDelete('cascade');
        });
    }
}

配置文件控制器文件

namespace App\Http\Controllers;

use Illuminate\Http\Request;
use App\profile;

class ProfileController extends Controller
{
    public function store(Request $request)
    {
       // used to store user profile after validation
        $this->validate($request,[
          'summary' => 'required'
        ]);
        $profile = new profile([
          'summary' => $request->get('summary'),
        ]);
        $profile->save();

        return redirect()->route('profile.create')->with('success','Profile created');
    }
}

Answer 1

更改您的迁移文件， 由于您想稍后定义您的关系，所以您的外国 id 字段应该可以为空。

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

class CreateProfilesTable extends Migration
{
public function up()
{
// create profile table
Schema::create('profiles', function (Blueprint $table) {
$table->increments('pID');
$table->timestamp('created_at')->useCurrent();
$table->string('summary')->default('');
$table->integer('uID')->nullable()->unsigned();

$table->foreign('uID')
        ->references('uID')
        ->on('users')
        ->onDelete('cascade');
});
}
}

如果您想在创建配置文件后分配登录用户，

namespace App\Http\Controllers;

use Illuminate\Http\Request;
use App\profile;

class ProfileController extends Controller
{
    public function store(Request $request)
    {
       // used to store user profile after validation
        $this->validate($request,[
          'summary' => 'required'
        ]);
        $profile = new profile([
          'summary' => $request->get('summary'),
          'uID'     => auth()->user()->id,

        ]);
        $profile->save();

        return redirect()->route('profile.create')->with('success','Profile created');
    }
}

Answer 2

如果您没有在程序中提供值，则需要在表定义级别提供默认值。

根据您的描述，您似乎缺少在创建用户记录后创建个人资料。