where clause inside a relationships - laravel - laravel

Question

I have 3 models like this:
WarehousePivotCategory:
id - warehouse_id - warehouse_category_id
Warehouse:
title
WarehouseCategory:
title_en
I've created 2 hasOne relationships inside WarehousePivotCategory and they work fine:
public function Warehouse()
{
return $this->hasOne('App\Models\Warehouse','id','warehouse_id');
}
public function WarehouseCategory()
{
return $this->hasOne('App\Models\WarehouseCategory','id','warehouse_category_id');
}
in the database I have two records in warehouses table :
id title
1 AA
2 BB
I want to search title in warehouses :
$title = 'AA';
$warehouses = WarehousePivotCategory::with(['warehouse' => function($q) use ($title) {
$q->where('title', 'like', '%' . $title . '%');
},'WarehouseCategory'])->get();
foreach ($warehouses as $w)
{
echo $w->warehouse->title; // no thing
}
but it doesn't return any of title of warehouses.
my relationships is correct because below code works fine :
WarehousePivotCategory::with('warehouse','WarehouseCategory')->paginate(10);

Answer 1

I think you're missing get method in your closure. Try it like this:
$warehouses = WarehousePivotCategory::with(['warehouse' => function($q) use ($title) {
$q->where('title', 'like', '%' . $title . '%')->get(); },'WarehouseCategory'])->get();
You can also send array of fields you want to fetch to get method, like this:
$warehouses = WarehousePivotCategory::with(['warehouse' => function($q) use ($title) {
$q->where('title', 'like', '%' . $title . '%')->get(['id', 'title']); },'WarehouseCategory'])->get();

Answer 2

That is wrong. You don't need to use hasone while you have created pivot.You need to use BelongsToMany
class warehouse extends Model{
public function ware_cat(){
return $this->BelongsToMany('App\Models\WarehouseCategory');
}
public function getWarehouse(){
$this->with('ware_cat')->get();
}
}
Pivot table will fetch it so in warehouse model you will get its category and in category model you will get the warehouse same way visa-versa.