如何解决错误 Column not found: 1054 Unknown column '_token' in 'field list' (SQL: update?

Question

public function edit($id){
    $guests=Guest::with('programs', 'specialties')->find($id);
    return view('editform',compact('guests'));
}

public function update(Request $request, $id)
{
    $guestupdate = Guest::find($id);
    $guestupdate->programs()->update($request->all());
    $guestupdate->specialties()->update($request->all());
    return redirect('/home/show'.$id)->with('alert', 'You have successfully updated');
}

class Guest extends Model
{
protected $primaryKey = 'guest_id';
protected $table = 'guests';
protected $fillable = 
['guest_fname','guest_lname','profession','mobile','work_phone',
        'current_job','previous_job','work_address','DOB','DD','program_name','specialty_name'];

public function programs()
{
    return $this->belongsToMany(Program::class, 'guest_show', 'guest_id', 'program_id')
        ->withPivot('subject', 'show_date');
}

public function specialties()
{
    return $this->belongsToMany(Specialization::class, 'guest_speciality', 'guest_id', 'speciality_id');
}

class Program extends Model
{
protected $table = 'programs';
protected $primaryKey = 'program_id';
protected $fillable = ['program_name','subject','show_date'];

public function guests()
{
    return $this- 
 >belongsToMany(Guest::class,'guest_show','program_id','guest_id')
        ->withPivot('subject', 'show_date');
}

}

class Specialization extends Model
{
protected $table = 'specialties';
protected $primaryKey = 'specialty_id';
protected $fillable = ['specialty_name'];
public function guests()
{
    return $this- 
>belongsToMany(Guest::class,'guest_speciality','speciality_id','guest_id');
}

这是我用于编辑数据的控制器和模型代码（仅由 guest_id 显示）然后我将更新请求所有字段从多对多关系。 编辑 URL 为 true，但是当我单击按钮更新数据时出现此问题列未找到：1054 Unknown column '_token' in 'field list' (SQL: update what's solve?

Answer 1

这是一个已知错误，可以在 here 找到。我认为您的错误来自$request->all()，其中包括来自csrf_field()的_token

所以尝试将$request->all() 更改为$request->except(['_token'])；在您的更新功能中。您的新更新函数应如下所示

public function update(Request $request, $id) {
    $guestupdate = Guest::find($id);
    $guestupdate->programs()->update($request->except(['_token']));
    $guestupdate->specialties()->update($request->except(['_token']));
    return redirect('/home/show'.$id)->with('alert', 'You have successfully updated');
}

更多学习 Laravel HTTP Requests

另一个问题可能是->withPivot 中的语法，withPivot 接受数组，因此将代码更改为以下：

public function programs() {
    return $this->belongsToMany(Program::class, 'guest_show', 'guest_id', 'program_id')
        ->withPivot(['subject', 'show_date']);
}