Solve laravel validation for field with relation - php

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);