Forum Models extending Models

posted 11 years ago

Hello, I want to know how I can describe "is-a" relationships with Eloquent models. Example:

abstract class Item extends Eloquent {
    ...
}

class Cellphone extends Item {
    ...
}

class Laptop extends Item {
    ...
}

So, I could do Item::all() to get all Items (Cellphones and Laptops). Also, Cellphones and Laptops should have different id's, so I could do Item::find($id).

Thanks in advance!

Last updated 3 years ago.

zwacky

replied 11 years ago

Solution

why not using jsut one model for cellphone and laptop and have a type_id property to distinguish between those? i think you'd be off the best with that.

you could then even create a method on the model or using a respository to get cellphones or laptops only.(Item::whereTypeId(Item::$TYPES->CELLPHONE)->get())

Last updated 3 years ago.

abbajbryant

replied 11 years ago

Try looking int single-table-inheritance - basically you define an abstract parent class and extend it with some specific subclasses that can encapsulate their unique attributes.

http://laravel.io/forum/02-17-2014-eloquent-single-table-inheritance

Last updated 3 years ago.