我的應用程序中有一個關系。候選人可以有多個“candidate_trainings”，并且每個“candidate_training”與一次訓練相關聯。我想避免將“candidate_trainings”設為樞軸，因為在分離等時很難刪除正確的值。那么，在我的 hasMany 關系中，我如何才能使用訓練模型中的數據獲取 CandidateTraining 模型。以下是我的人際關系：<?phpnamespace App;use App\Traits\SanitizeIds;use App\Salary;use Illuminate\Database\Eloquent\Model;use Illuminate\Support\Facades\Storage;class Candidate extends Model{ public function saveTraining($data) { $this->candidateTrainings()->delete(); foreach(json_decode($data['training']) as $training) { if(Training::find($training->training)->first()) { $candidateTraining = new CandidateTraining; $candidateTraining->description = $training->value; $candidateTraining->training_id = $training->training; $this->candidateTrainings()->save($candidateTraining); } } } public function candidateTrainings() { return $this->hasMany('\App\CandidateTraining'); } public function trainings() { return $this->belongsToMany('\App\Training'); }}<?phpnamespace App;use Illuminate\Database\Eloquent\Model;class Training extends Model{ protected $fillable = ['name_french', 'name_english']; public function candidates() { return $this->belongsToMany('\App\Candidate'); } public function candidateTrainings() { return $this->hasMany('\App\CandidateTraining'); }}<?phpnamespace App;use Illuminate\Database\Eloquent\Relations\Pivot;class CandidateTraining extends Pivot{ public function candidate() { return $this->belongsTo('\App\Candidate'); } public function training() { return $this->belongsTo('\App\Training'); }}謝謝你！
1 回答
神不在的星期二
TA貢獻1963條經驗 獲得超6個贊
為了能夠直接更新模型上的數據CandidateTraining，您需要向$fillable其中添加字段。
protected $fillable = ['training_id', 'description'];
你的代碼應該可以工作！但如果你不介意的話，我做了一些重構。您可以通過另一種方式完成此操作：
<?php
namespace App;
use App\Traits\SanitizeIds;
use App\Salary;
use Illuminate\Database\Eloquent\Model;
use Illuminate\Support\Facades\Storage;
class Candidate extends Model
{
public function saveTraining($data)
{
// remove all relationships
$this->trainings()->detach();
// add new ones
foreach(json_decode($data['training']) as $training)
{
if(Training::find($training->training)->first())
{
$this->trainings()->attach($training->training, [
'description' => $training->value,
]);
}
}
}
public function candidateTrainings()
{
return $this->hasMany(App\CandidateTraining::class);
}
public function trainings()
{
return $this->belongsToMany(App\Training::class)
->withTimestamps()
->using(App\CandidateTraining::class)
->withPivot([
'id',
'training_id',
'description',
]);
}
}
這些$training->training內容不可讀，$training->id如果可以的話將其更改為類似的內容。
<?php
namespace App;
use Illuminate\Database\Eloquent\Model;
class Training extends Model
{
protected $fillable = ['name_french', 'name_english'];
public function candidates()
{
return $this->belongsToMany(App\Candidate::class)
->withTimestamps()
->using(App\CandidateTraining::class)
->withPivot([
'id',
'training_id',
'description',
]);;
}
public function candidateTrainings()
{
return $this->hasMany(App\CandidateTraining::class);
}
}
<?php
namespace App;
use Illuminate\Database\Eloquent\Relations\Pivot;
class CandidateTraining extends Pivot
{
protected $fillable = ['training_id', 'description'];
public function candidate()
{
return $this->belongsTo(App\Candidate::class);
}
public function training()
{
return $this->belongsTo(App\Training::class);
}
}
如果您想從控制器訪問樞軸對象：
$candidates = Candidate::with(['trainings'])->get();
foreach ($candidates as $candidate)
{
dd($candidate->pivot);
}
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