Question

我遇到以下错误：

未找到列：1054未知列'image_likes.gallery_image_id' 在“ where子句”中（SQL：从image_likes中选择* where {1）中的image_likes。gallery_image_id和deleted_at为空， user_id = 1和image_likes。deleted_at为空）

每当我添加function ($query)时。

下面的代码行获取数据，但是我需要数据来获取与之对应的赞。

$images = GalleryImage::with('user')->get()

这是我到目前为止所拥有的。

ImageLike.php

<?php

namespace App;

use App\GalleryImage;
use App\User;
use Illuminate\Database\Eloquent\Model;
use Illuminate\Database\Eloquent\SoftDeletes;

class ImageLike extends Model
{
    use SoftDeletes;

    protected $fillable = [
        'user_id',
        'image_id'
    ];

}

ImageController.php

public function getImages()
{

    $images = GalleryImage::with('user')
                        ->with(['likes' => function ($query) {
                                    $query->whereNull('deleted_at');
                                    $query->where('user_id', auth()->user()->id);

                        }])->get(); 


    return response()->json($images); 
}

GalleryImage.php

<?php

namespace App;

use App\User;
use App\GalleryImage;
use Illuminate\Database\Eloquent\Model;
use Illuminate\Foundation\Auth\User as Authenticatable;

class GalleryImage extends Authenticatable
{
    protected $fillable = [
        'image_title',
        'user_id',
        'file_name', 
        'created_at'
    ];

    protected $table = 'images';


    public function user()
    {
        return $this->belongsTo(User::class);
    }

    public function likes()
    {
         return $this->hasMany(ImageLike::class);
    }

    public function likedByMe()
    {
        foreach($this->likes as $like) {
            if ($like->user_id == auth()->id()){
                return true;
            }
        }
        return false;
    }


}

Answer 1

在模型GalleryImage中为likes更改您的关系

public function likes()
{
   return $this->hasMany(ImageLike::class, 'image_id'); //here image_id is reference id of images table to likes table
}

默认laravel假设您的模型名称和_id为外键，因此它在gallery_image_id模型中为GalleryImage模型寻找ImageLike，但是您有image_id。因此，如果您没有默认值，请在关系中进行具体说明。

return $this->hasMany('App\Comment', 'foreign_key', 'local_key');

在此处查看详细信息

https://laravel.com/docs/5.6/eloquent-relationships#one-to-many

Answer 2

public function likedByMe()
{
    return $this->likes()->whereUserId(auth()->id)->count()>0;
}

这与您的问题无关，但是您可以像这样高效地重写likedByMe()

laravel找不到列：1054未知列'image_likes.gallery_image_id'

2 个答案: