Question

我得到的错误是：（SQLSTATE [42S22]：未找到列：1054'where子句'中的未知列'users.post_id'（SQL：select * from users其中users。post_id = 1和{ {1}}。users不为空。）

我正在尝试查阅包含两个喜欢和不喜欢的帖子的帖子的页面：

----＆GT;表的迁移喜欢：

post_id

----＆GT;表用户的迁移是：

public function up()
{
    Schema::create('likes', function (Blueprint $table) {
        $table->increments('id');
        $table->integer('user_id');
        $table->integer('post_id');
        $table->boolean('like');
        $table->timestamps();
    });
}

--------------------＆gt;我的用户模型是：

public function up()
{
    Schema::create('users', function (Blueprint $table) {
        $table->increments('id');
        $table->string('name');
        $table->string('email')->unique();
        $table->string('password');
        $table->rememberToken();
        $table->timestamps();

    });
}

--------------＆GT;我的帖子模型是：

class User extends Authenticatable
{
use Notifiable;

public function likes() {

return $this->hasMany(User::class);
}
/**
 * The attributes that are mass assignable.
 *
 * @var array
 */
protected $fillable = [
    'name', 'email', 'password',
];

/**
 * The attributes that should be hidden for arrays.
 *
 * @var array
 */
protected $hidden = [
    'password', 'remember_token',
];
 }

-----------＆GT;我喜欢的模特是：

 class Post extends Model
 {
public $table="posts";


 public function comments() {

return $this->hasMany(Comment::class)->orderBy('created_at');
}

 public function likes() {

return $this->hasMany(User::class);
 }
 }

-------------我的评论模型是：

 class Like extends Model
  {
 public function post() {

return $this->belongsTo(Post::class);
  }

 public function user() {

return $this->belongsTo(User::class);
 }

----＆GT;我在刀片Post.blade.php中调用变量的代码部分是：

 class Comment extends Model
 {

 protected $fillable = [
'username', 'body', 'post_id'
 ];
public function post() {

return $this->belongsTo(Post::Class);
 }

  }

我根据user.id和post.id手动将一些随机数插入到表格中，然后转为= 1

Answer 1

请更改帖子模型关系hasManyTo属于

返回$ this-> hasMany（User :: class）;

用下面的代码替换，就可以了。

返回$ this-> belongsTo（User :: class）;

SQLSTATE [42S22]：找不到列：1054未知列（Laravel）

1 个答案: