Laravel validation with create form: retrieve old input data for dropdown box - laravel

Question

I have a Laravel application which uses a form to create items. The form uses validation as defined in the Laravel documentation under this section.
I have a StoreItem Request file:
public function rules() {
return [
'item_name'=>'required',
'category_id'=> 'required',
'collection_id'=> 'required',
'brewery_id'=> 'required',
];
}
and in the controller I have the following:
public function store(storeItem $request)
{
$validated = $request->validated();
$item = new Item([
'user_id' => Auth::id(),
'item_name' => $request->item_name,
'category_id' => $request->category_id,
'collection_id' => $request->collection_id,
'brewery_id' => $request->brewery_id,
]);
$item->save();
When validation is catching an error, the create form is presented again but I don't see the old input data.
For the input text fields, I have done the following:
<input type="text" class="form-control" name="item_name" value="{{ old('item_name') }}" />
and this shows the old input data, but what to do for the dropdown boxes like category_id, collection_id and brewery_id. I want them to have the old value as the 'selected' value.
Currently in the form I have (for the dropdown boxes):
<div class="form-group">
<label class="form-label" for="brewery">Brewery: (*)</label>
<select class="form-control" name="brewery_id" >
#foreach($breweries as $brewery)
<option value="{{ $brewery->id }}">{{ $brewery->brewery_name }}</option>
#endforeach
</select>
</div>
This source seems to indicate that using the old() method might even not be needed, but if I don't use the

Answer 1

You need to manually add the selected attribute to the previously selected value. For example:
<div class="form-group">
<label class="form-label" for="brewery">Brewery: (*)</label>
<select class="form-control" name="brewery_id" >
#foreach($breweries as $brewery)
<option value="{{ $brewery->id }}" {{ old("brewery_id") == $brewery->id ? "selected" : "" }}>{{ $brewery->brewery_name }}</option>
#endforeach
</select>
</div>

Answer 2

try this as well. I've added bracket open and close to (old('brewery_id')==$brewery->id)
<div class="form-group">
<label class="form-label" for="brewery">Brewery: (*)</label>
<select class="form-control" name="brewery_id" >
#foreach($breweries as $brewery)
<option value="{{ $brewery->id }}" {{ (old('brewery_id') == $brewery->id)? "selected" : "" }}>{{ $brewery->brewery_name }}</option>
#endforeach
</select>
</div>