I am building an app to create Football (Soccer) matches. When I create a match, I need to check that the selected teams are in the chosen league.

When the form is submitted I would like to display a message that the wrong league selected if so.

There is `store()` method in controller

```php
$match = new Match;
$match->round = $request->round;
$match->league_id = $request->league;
$match->home_team_id = $request->home_team;
$match->away_team_id = $request->away_team;
$match->match_date = $request->match_date;
$match->location = $request->location;

```

Team model:

```php
class Team extends Model
{
    public function league() {
        return $this->belongsTo('App\League');
    }
}

```

League model:

```php
class League extends Model
{
    public function teams() {
        return $this->hasMany('App\Team');
    }
}

```