app/Teams/CanJoinTeams.php
public function ownsTeam($team)
    {
        if (is_null($team->owner_id) || is_null($this->id)) {
            return false;
        }

        return $this->id === $team->owner_id;
    }
public function ownsTeam($team)
    {
        if (is_null($team->owner_id) || is_null($this->id)) {
            return false;
        }

        return $this->id === $team->owner_id;
    }
Determine if the given team is owned by the user.

@param  \Laravel\Spark\Teams\Team  $team
@return bool