How to print user email using vehicle user_id in Laravel 5.6

Question

I am working with Laravel 5.6 and mysql in my app. and I am new to the Laravel. I have following table as vehicles,

id  name  number  user_id
1   car   123        1
2   van   258        2
3   lorry 125        5
4   car   896        7

and user table like this,

id name    email
1  hyu     agt@mail.com
2  opv     yyuj@mail.com
3  kio     juik@mail.com
4  lop     kiuf@mail.com
5  hyg     htgd@mail.com

Now I need print email using above vehicles table user_id in my blade file, how can I do this? Edit I have following blade file to print vehicles table,

{{$vehicle->name}}
{{$vehicle->number}}

edit my vehiclecontroller,

 public function show($id)
    {
        $vehicles = Vehicle::find($id);


        return view('vehicles.show')->withVehicles($vehicles);
    }

and show blade file,

<div class="col-md-5" id="vl"> 
<div><label >Brand:</label>{{$vehicles->name}}</div>
<br>
<div><label >Model:</label>{{$vehicles->number}}</div>
<br>

Answer 1

If you have a relation in place on your Vehicle model which looks like this:

public function user()
{
    return $this->belongsTo(User::class);
}

you can simply access the user property to get the email : {{ $vehicle->user->email }}

For improved performance, it makes sense to eager load the users when you fetch the vehicles from the database:

$vehicles = Vehicle::with('user')->get();

Answer 2

First take a look at this to create model for tables and then you can join it for both the tables and get user email too.

$vehicles = Vehicle::select('vehicles.name', 'vehicles.number', 'users.email')
        ->leftjoin('users', 'users.id', '=', 'vehicles.user_id')->get();

You can also use Laravel relations to achieve this.

Answer 3

$userEmails= DB::table('vehicles')
            ->join('contacts', 'user.id', '=', 'vehicles.user_id')
            ->select('users.email')
            ->get();

Try above code. This is SQL join concept. For your reference https://laravel.com/docs/5.7/queries#joins