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');
}

这是我的控制器和模型代码，用于编辑数据（仅由guest_id显示），然后我将更新请求的字段从多对多关系。编辑网址为true，但是当我单击更新数据的按钮时，找不到此问题列：1054“字段列表”中的未知列“ _token”（SQL：更新解决方案？

Answer 1

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

因此，请尝试将$request->all()更改为$request->except(['_token'])；在您的更新功能中。您的新更新功能应如下所示

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');
}

要进一步研究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代码：

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

如何解决错误找不到列：1054“字段列表”中的未知列“ _token”（SQL：更新？

1 个答案: