Question

我正在使用laravel 5.6版本，这是我的测试模型文件

<?php

namespace App\Model\data\Models;

use Illuminate\database\Eloquent\Model;

class Test extends Model
{

    protected $guarded = ['id'];
    protected $table = 'tests';

    /*
    * Test - TestTranslation relation
    * Test has many translations
    */      
    public function translations() 
    { 

        return $this->hasMany('App\Model\Data\Models\TestTranslation'); 

    }       

    /*
    * Test - Image relation
    * Test can have an thumbnail
    */  
    public function thumbnails() 
    { 

        return $this->morphMany('App\Model\Data\Models\Image', 'type'); 

    }

}

这是我的图片模型

<?php

namespace App\Model\Data\Models;

use Illuminate\Database\Eloquent\Model;

class Image extends Model
{

    protected $guarded = ['id'];
    protected $table = 'images';

    /*
    * Image belongs to Post, Account, Comment
    */      
    public function type()
    {

        return $this->morphTo();

    }   

}

这是我的图像数据库方案表：

<?php

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

class CreateImagesTable extends Migration
{
    /**
     * Run the migrations.
     *
     * @return void
     */
    public function up()
    {
        Schema::create('images', function (Blueprint $table) {
            $table->increments('id');
            $table->string('path');
            $table->enum('type', ['avatar', 'thumbnail', 'generic'])->default('generic');
            $table->integer('type_id')->unsigned()->nullable();
            $table->enum('type_type',[
                "Account",
                "Comment",
                "Post",
                "Skill",
                "Test"
            ])->nullable();
            $table->timestamps();
        });
    }

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

在AppServiceProvider中，我将'Test'链接到我的模型文件：

<?php

namespace App\Providers;

use Illuminate\Support\Facades\Schema;
use Illuminate\Support\ServiceProvider;
use Laravel\Dusk\DuskServiceProvider;
use Illuminate\Database\Eloquent\Relations\Relation;
use App\Model\Data\Models\Account;
use App\Model\Data\Models\EmailChangeConfirmation;
use App\Model\Observers\Common\AccountObserver;
use App\Model\Observers\Common\EmailChangeConfirmationObserver;

class AppServiceProvider extends ServiceProvider
{
    /**
     * Bootstrap any application services.
     *
     * @return void
     */
    public function boot()
    {
        Schema::defaultStringLength(191);
        Relation::morphMap([
            'Account' => 'App\Model\Data\Models\Account',
            'Comment' => 'App\Model\Data\Models\Comment',
            'Post' => 'App\Model\Data\Models\Post',
            'Skill' => 'App\Model\Data\Models\Skill',
            'Test' => 'App\Model\Data\Models\Test'
        ]);     

        if(env('APP_ENV') != 'testing') {
            Account::observe(AccountObserver::class);
            EmailChangeConfirmation::observe(EmailChangeConfirmationObserver::class);
        }
    }

    /**
     * Register any application services.
     *
     * @return void
     */
    public function register()
    {
        if ($this->app->environment('local', 'testing')) {
            $this->app->register(DuskServiceProvider::class);
        }
    }
}

正如你所看到的，我有更多的morhpMany类型，并且它们都运行良好。但由于某种原因，我最近添加的Test关系总是返回一个空集合，即使很难，我确信测试有缩略图。原因：在这个截图中，我在数据库中有记录，每个测试都有两个图像。他们的ID匹配创建的测试和类型的ID是“测试”。我试图清除所有缓存，运行composer dump-autoload，但没有一个帮助。

也许有人可以帮助识别这里有什么问题？因为正如我之前所说的其他类型的帖子，帐户工作正常。

MorphMany laravel关系由于某种原因不起作用

0 个答案: