get data from multiple relations in laravel eloquent - laravel

Question

I have the following tables pharmacies,categories,medicines and I am using laravel
the relations are like this
pharmacy have many medicines and the medicine belongs to one category
the medicines table have pharmacy_id and category_id columns + other columns
I want to show a pharmacy by id and it should return an object of pharmacy with categories, each category have object of medicines in this pharmacy. If there is no medicine in any category, then it should not be returned.
I think its a model relations issue
any idea could be useful
the category model
class Category extends Model
{
protected $table = 'categories';
public function pharmacies()
{
return $this->belongsToMany(Pharmacy::class, 'pharmacy_category', 'category_id', 'id');
}
public function medicines()
{
return $this->hasMany(Medicine::class);
}
}
the pharmacy model
class Pharmacy extends Model
{
use SoftDeletes;
protected $table = 'pharmacies';
protected $appends = ['favourite'];
public function categories()
{
return $this->belongsToMany(Category::class,'pharmacy_category','pharmacy_id','id');
}
public function getFavouriteAttribute()
{
if (!Auth::check()) {
return 0;
}
return (FavouritePharmacy::where('user_id', Auth::user()->id)->where('pharmacy_id', $this->id)->count() == 1) ? 1 : 0;
}
}
the medicine model
class Medicine extends Model
{
protected $appends = ['favourite'];
public function orders()
{
return $this->belongsToMany(Order::class);
}
public function getFavouriteAttribute()
{
if (!Auth::check()) {
return 0;
}
return (FavouriteMedicine::where('user_id', Auth::user()->id)->where('medicine_id', $this->id)->count() == 1) ? 1 : 0;
}
}

Answer 1

If you want to display pharmacy info, categories with medicines, with these relationships I'd do this:
$pharmacy = Pharmacy::find($id);
$categoriesWithMedicines = Category::whereHas('medicines', function($q) use($id) {
$q->where('pharmacy_id', $id);
})
->with(['medicines' => function($q) use($id) {
$q->where('pharmacy_id', $id);
}])
->get();
Then in a view, you'll have a pharmacy object and a list of categories with medicines which belong to the pharmacy:
#foreach ($categoriesWithMedicines as $category)
{{ $category->name }}
#foreach ($category->medicines as $medicine)
{{ $medicine->name }}
#endforeach
#endforeach