src/Traits/RegistersUsers.php
public function confirm($confirmation_code)
    {
        $model = $this->guard()->getProvider()->createModel();

        $user = $model->where('confirmation_code', $confirmation_code)->firstOrFail();

        $user->confirmation_code = null;
        $user->confirmed_at = now();
        $user->save();

        event(new Confirmed($user));

        return $this->confirmed($user)
            ?: redirect($this->redirectAfterConfirmationPath())->with('confirmation', __('confirmation::confirmation.confirmation_successful'));
    }
public function confirm($confirmation_code)
    {
        $model = $this->guard()->getProvider()->createModel();

        $user = $model->where('confirmation_code', $confirmation_code)->firstOrFail();

        $user->confirmation_code = null;
        $user->confirmed_at = now();
        $user->save();

        event(new Confirmed($user));

        return $this->confirmed($user)
            ?: redirect($this->redirectAfterConfirmationPath())->with('confirmation', __('confirmation::confirmation.confirmation_successful'));
    }
Confirm a user with a given confirmation code.

@param $confirmation_code
@return \Illuminate\Http\RedirectResponse