How to prevent printing duplicate record in blade foreach while using model relation in laravel - php

Question

I'm using laravel 9.11
I have a stock table containing items and each item is related to a specific place,
table snapshot
I have another form to make changes of values and I want to loop throw all places that exist in stock table but withouh making duplicate record.
snapshot of the error
showing the error
I do have all record of stock places and made a loop throw it but I want a way to avoid duplicating the records.
Blade code
<div class="mb-3">
<label for="place_name" class="block mb-2 mt-2 text-sm font-medium text-gray-900 dark:text-gray-400">
Select a Place
</label>
<select id="place_name" name="selectPlace"
class="bg-gray-50 border border-gray-300 text-gray-900 text-sm rounded-lg focus:ring-blue-500 focus:border-blue-500 block w-full p-2.5 dark:bg-gray-700 dark:border-gray-600 dark:placeholder-gray-400 dark:text-white dark:focus:ring-blue-500 dark:focus:border-blue-500 cursor-pointer">
<option selected value="">Choose a Place</option>
#foreach($stocks as $stock)
<option value="{{ $stock->places->id }}">{{ $stock->places->name }}</option>
#endforeach
</select>
#error('selectPlace') <p class="input_validate">{{ $message }}</p> #enderror
</div>
Controller code
public function transfer() {
$assets = Asset::all();
$places = Place::all();
$quantities = AssetQuantity::all();
$services = Service::all();
$stocks = Stock::all();
return view('stock.transfer', [
'assets' => $assets,
'places' => $places,
'quantities' => $quantities,
'services' => $services,
'stocks' => $stocks
]);
}
Stock Model
class Stock extends Model
{
use HasFactory;
protected $fillable = ['current_stock', 'asset_id', 'place_id', 'quantity_id'];
public function assets() {
return $this->belongsTo(Asset::class, 'asset_id');
}
public function places() {
return $this->belongsTo(Place::class, 'place_id');
}
// Relation to know quantity of assets
public function quantity() {
return $this->belongsTo(AssetQuantity::class, 'quantity_id');
}
}
Place Model
class Place extends Model
{
use HasFactory;
protected $fillable = [
'name'
];
public function stocks() {
return $this->hasMany(Stock::class, 'place_id');
}
}

Answer 1

I think you can eager load Stock::with('places')->get() and later map your collection
with something like.
$stocksCollection = Stock::with('places')->get();
$collection = $stocksCollection->map(function ($array) {
return collect($array)->unique('place_id')->all();
});