Laravel - 将多个字段保存为数组而不是行

Question

I have one to many relation tables. I want to insert child table data in array instead of rows.

Mobile.php

protected $fillable = ['mobile_id', 'mobile_name'];

public function models() {
    return $this->hasMany(Model::class, 'mobile_id');
}

Model.php

protected $fillable = ['model_name', 'mobile_id'
    ];
public function model()
{
    return $this->belongsTo(Mobile::class, 'mobile_id');
}

View

Mobile Name: <input type="text" name="mobile_name">

Models:

<input type="text" name="model_name[]">
<button class="add_model">Add Model</button>

Controller

public function create(Request $request, Mobile $mob){
  $mob= new Mobile;
  $mob->mobile_name = request('mobile_name');

  for($i=0; $i < count(request('model_name')); $i++){
     $models = new Model;
     $models->model_name = request('model_name')[$i];

     $mob->models()->save($models);
     }
 $mob->save();
}

It's creates a new row for each mobile models inserted. But I want those models inserted in a single column model_name in an array line.

I tried

for($i=0; $i < count(request('model_name')); $i++){
  Size::create([
  'model_name' => request('model_name')[$i],
  'mobile_id' => $mob->id
  ]);

But it is also not working.

Answer 1

You should serialize the data before saving it in the database.Create the model instance outside the for loop.Here is the working code.

   public function create(Request $request, Mobile $mob){
      $mob= new Mobile;
      $mob->mobile_name = $request('mobile_name');
      $models = new Model;
      $arr=[];
      for($i=0; $i < count($request('model_name')); $i++){
         array_push($arr, $request('model_name')[$i]);
         }
      serialize($arr);
      $models->model_name =$arr;
      $mob->models()->save($models);
     $mob->save();
    }

In the model.php, add the below code

protected $casts = [
      'model_name ' => 'array',
]