解决带有关系的字段的Laravel验证

Question

I have some problem where the validation is failing for my blade template with dropdown select on related table. I tried to searched for an answer but cannot found it.

To temporarily comment out the the field 'business_unit_id' inside the array in validate function to avoid the error.

In controller update function:

    $item = CostCenter::findOrFail($id);
    $validatedData = $request->validate([
        'code' => 'bail|min:4|required|max:6',
        'descr' => 'bail|min:4|required|max:50',
        'business_unit_id' => 'required|integer',
    ]);

    $item->fill($validatedData);
    $item->business_unit_id = $request->businessUnit;

    $item->save();
    $request->session()->flash('status', 'Cost centers record was updated!');

    return redirect()->route('costCenters.show', ['cost_centers' => $item->id]);

In blade template:

        <label for="businessUnit" class="col-sm-2 col-form-label">Business Unit</label>
            <select name="businessUnit" class="form-control">
                @foreach (App\Models\BusinessUnit::all() as $data)
                    <option value="{{ $data->id }}"
                        {{ old('business_unit_id', $cost_centers->business_unit_id ?? '1')
                            != $data->id ?: 'selected' }}>
                        {{ $data->code }} - {{ $data->descr }}
                    </option>
                @endforeach
            </select>

The notification received is "The business unit id field is required." with my error helper.

Answer 1

$validatedData = $request->validate([
    'code' => 'bail|min:4|required|max:6',
    'descr' => 'bail|min:4|required|max:50',
    'businessUnit' => 'required|integer',
]);

Use businessUnit instead of business_unit_id as we have to use the name of select tag... don't use the id of options tag..

Answer 2

you can try this code...and use use keyword to of the code like use Validator;

    $rules = [
           'code' => 'bail|min:4|required|max:6',
           'descr' => 'bail|min:4|required|max:50',
           'businessUnit' => 'required|integer|exists:business_unit,id',
    ];

    $message = [
        'code.required' => 'code is required.',
        'descr.required' => 'description field is required.',
        'businessUnit.required' => 'The business unit id field is required.',

    ];

     $validator = Validator::make($request->all(), $rules,$message);
      if ($validator->fails()) {
      $arr = array("status"=>400,"msg"=>$validator->errors()- 
     >first(),"result"=>array());
      }
       else
       {
      your code write in this section
        }

Answer 3

For any request data validation in controller You can try like this:

$rule=array(
        'code' => 'bail|min:4|required|max:6',
        'descr' => 'bail|min:4|required|max:50',
        'business_unit_id' => 'required|integer',
);
$validator= Validator::make($request->all(),$rule);