SQLSTATE [HY000]：一般错误：1364 字段 'id' 在 Laravel 6 中没有默认值

Question

在这里，我试图将数据插入数据库，但由于某种原因，我无法将数据插入数据库。这是错误：

SQLSTATE[HY000]：一般错误：1364 字段“id”没有默认值（SQL：插入stages（code，name，description，updated_at，@987654326 @) 值 (32, dfs, vc, 2020-04-14 06:02:57, 2020-04-14 06:02:57))"

我的代码在这里：

StageController.php

<?php


namespace App\Sys\Http\Controllers;

use App\Http\Controllers\Controller;

use Illuminate\Http\Request;

use App\Sys\Model\Stage;

class StageController extends Controller
{

    public function index(Request $request)
    {  
        $per_page = $request->per_page ? $request->per_page : 5;
        $sort_by = $request->sort_by;
        $order_by = $request->order_by;
        return response()->json(['stages' => Stage::orderBy($sort_by, $order_by)->paginate($per_page)],200);
    }

    public function store(Request $request)
    {
        $location= Stage::create([
            'code' =>$request->code,
            'name' =>$request->name,
            'description' =>$request->description
        ]);
        return response()->json(['stage'=>$stage],200);
    }


    public function show($id)                                                                                                                                                           
    {
        $stages = Stage::where('code','LIKE', "%$id%")->orWhere('name','LIKE', "%$id%")->orWhere('description', 'LIKE', "%$id%")->paginate();
        return response()->json(['stages' => $stages],200);
    }



    public function update(Request $request, $id)
    {
       $stage = Stage::find($id);
       $stage->code  = $request->code;
       $stage->name  = $request->name;
       $stage->description  = $request->description;
       $stage->save(); 
       return response()->json(['stage'=>$stage], 200);
    }

    public function destroy($id)
    {
        $stage = Stage::where('id', $id)->delete();
        return  response()->json(['stage'=>$stage],200);
    }

    public function deleteAll(Request $request){
        Stage::whereIn('id', $request->stages)->delete();
        return response()->json(['message', 'Records Deleted Successfully'], 200);
    }
}

Stage.php

<?php

namespace App\Sys\Model;

use Illuminate\Database\Eloquent\Model;

class Stage extends Model
{
    protected $guarded = [];
}

我的迁移文件：

<?php

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

class CreateStagesTable extends Migration
{
    /**
     * Run the migrations.
     *
     * @return void
     */
    public function up()
    {
        Schema::create('stages', function (Blueprint $table) {
            $table->uuid('id')->primary();
            $table->string('original_id',36)->default('0')->index();
            $table->string('code',10)->index()->nullable();
            $table->string('name',100);
            $table->string('description',200)->nullable();
            $table->char('created_by',36)->index();
            $table->char('edited_by',36)->index()->nullable();
            $table->timestamps();

            $table->foreign('created_by')->references('id')->on('users');
            $table->foreign('edited_by')->references('id')->on('users');
        });
    }

    /**
     * Reverse the migrations.
     *
     * @return void
     */
    public function down()
    {
        Schema::dropIfExists('stages');
    }
}

Answer 1

在我的例子中，我没有将该字段添加到我的模型中的可填写字段中

<?php

namespace App;

use Illuminate\Database\Eloquent\Model;

class Flight extends Model
{
    /**
     * The attributes that are mass assignable.
     *
     * @var array
     */
    protected $fillable = ['name'];
}

Answer 2

对于 laravel 5.6+，你可以使用Str::uuid() 来生成 uuid 字符串；

use Illuminate\Support\Str;
...
public function store(Request $request)
    {
        $uuid = Str::uuid()->toString();
        $location= Stage::create([
            'id' => $uuid,
            'code' =>$request->code,
            'name' =>$request->name,
            'description' =>$request->description
        ]);
        return response()->json(['stage'=>$stage],200);
    }

laravel 5.6以下，可以使用Ramsey\Uuid\Uuid；

use Ramsey\Uuid\Uuid;
...
public function store(Request $request)
    {
        $uuid = Uuid::uuid1()->toString();
        ...
        return response()->json(['stage'=>$stage],200);
    }

或者你可以编写一个用于创建创建uuid的引导方法，Eloquent会自动为每个创建方法设置id=uuid。如果有多个具有主键 uuid 的模型，您可以编写一个 trait 并在每个模型中使用此 trait。

use Illuminate\Support\Str;
...
class Stage extends Model
{

    /**
     * Boot function from laravel.
     */
    protected static function boot()
    {
        parent::boot();

        static::creating(function ($model) {
            $model->{$model->getKeyName()} = Str::uuid()->toString();
        });
    }
}