How to use leftJoin in Laravel for case?

Question

I have the following code:

$registrations = User::where(function ($query) use ($request) {
   if (!is_null($request->region) && $request->region !== '0') {
      $query->where('region', $request->region);
   }
})->get();

How to join User result with another model Clients with Left Join condition?

I tried this way:

$registrations = User->join('clients', 'clients.id', '=', 'user.id')->where(...

Answer 1

Read the documentation first: https://laravel.com/docs/5.5/queries#joins .

$registrations = User::where(....)
    ->join('clients', 'clients.id', '=', 'user.id')
    ->get();

Answer 2

You could catch it by reading docs

$users = DB::table('users')
->leftJoin('clients', 'users.id', '=', 'clients.user_id')
->where('','')
->get();