laravel / PHP not sure what this is called / how it works

[Joveice]

Hello,

 

So when I call my models etc like

$book = $books->where('name', 'somebook')->first();
echo $book->sales(); //returns all sales
echo $book->sales->today(); //returns all sales today

So this is something I could no. but here is the catch for me.

 

how do I make the ->today(); work? Currently I have no idea how I can add more functions, "sub functions to the sales function".

 

What am I looking for? I just need the name of this so I can learn how to do it.

[Cruorzy]

Its called eloquent, and you are probably looking for model scopes

 

Https://laravel.com/docs/5.4/eloquent#local-scopes under Local Scopes.