Find or Create with Eloquent

Question

I have recently started working with Laravel and Eloquent, and was wondering about the lack of a find or create option for models. You could always write, for example:

Answer 1

Find or New based on primary key id

$user = User::findOrNew($id); // if exist then update else insert
$user->name= $data['full_name'];
$user->save();

First or New based on non-primary key single filed

// get the record where field_name=value else insert new record
$user = User::firstOrNew(['field_name'=>'value']); 
$user->name= $data['full_name'];
$user->save();

First or New based on non-primary key multiple filed

// get the record where field_name1=value1 and field_name2=value2, else insert new record
$user = User::firstOrNew(['field_name1'=>'value1','field_name2'=>'value2']);
$user->name= $data['full_name'];
$user->save();