如何修复：SQLSTATE [42S22]：找不到列：1054 Unknown column 'created_at

Question

SQLSTATE[42S22]: 未找到列: 1054 未知列 'create_at' in 'order Clause' (SQL: select * from posts where posts.user_id = 2 and posts.user_id is not null order by create_at desc) (查看: D:\xampp\htdocs\xampp\praactise\freecode\resources\views\profiles\index.blade.php)

我试过了：php artisan migrate:fresh

index.blade.php

<div class="col-9 pt-5">
           <div class=" d-flex justify-content-between align-items-baseline font-weight-bold"><h1>{{ $user->username }}</h1>
            <a href="/p/create">Add New Post</a>
           </div>
                <div class="d-flex">
                    <div ><strong>{{ $user->posts->count() }}</strong> posts</div>
                    <div class="pl-5"><strong>23k</strong> followers</div>
                    <div class="pl-5"><strong>435</strong> following</div>
                </div>
                <div class="pt-4 font-weight-bold" ><strong>{{ $user->profile->title }}</strong></div>
                <div>{{ $user->profile->description }}</div>
                <div><a href="#">{{ $user->profile->url ??'N/A' }}</a></div>
        </div>

    </div>
    <div class="row pt-5">
        @foreach($user->$posts as $post)
        <div class="col-4" >
            <img src="/storage/{{ $post->image }}" class="w-100"> 
        </div>
        @endforeach

User.php 文件----

 public function posts()
    {
        return $this->hasMany(Post::class)->orderBy('create_at','desc');
    }
    public function profile()
    {
        return $this->hasOne(Profile::class);
    }

post.php 文件

class Post extends Model
{
     protected $guarded=[];
   public function user()
    {
        return $this->belongsTo(User::class);
    }
}

Answer 1

未知列create_at，已知为created_at

在你的文件 User.php 中

改变

return $this->hasMany(Post::class)->orderBy('create_at','desc');

到

return $this->hasMany(Post::class)->orderBy('created_at','desc');