allow both username and email in login laravel 5 - authentication

Question

I use laravel's 5 built in authentication for login. im spending hours finding where is the database query located at that has been use when login, I want to both allow email and username is the email box. Anyone knows where that database query located at? anyone knows how to allow both username and password on the authentication.
PS: to sharpen the details, I just want the user to allow them to login both username and email.
PS: again! Im running on laravel 5 not 4!

Answer 1

Define both a login and an password input in your form then the request should look like :
public function authorize() {
return true;
}
public function rules()
{
return [
'login' => 'required',
'password' => 'required'
];
}
Then your login function should look like :
public function login(LoginRequest $request)
{
$field = filter_var($request->input('login'), FILTER_VALIDATE_EMAIL) ? 'email' : 'username';
$request->merge([$field => $request->input('login')]);
if ($this->auth->attempt($request->only($field, 'password')))
{
return redirect('/');
}
return redirect('/login')->withErrors([
'error' => 'You email/username or password combination is wrong.',
]);
}
This is an optimized version because instead of doing 2 attemps to verify the credentials for both : if is a username or if is a password, laravel will do the work with verifying if the given data points to an email login or username.