Items Class in PHP, abstract class products, example
Hello,
I am building an inventory, where items will be some sort of products.
I have a dilemma in how to write this class in php5, I want to write an abstract class item.
Now, which is a better approach, to write a separate DataManager interface to create and manage items (ex. add/update them into the DB) or to create methods inside the items class?
If you have an example of how to approach this situation feel free to share.
Thanks,
Eugen
I am building an inventory, where items will be some sort of products.
I have a dilemma in how to write this class in php5, I want to write an abstract class item.
Now, which is a better approach, to write a separate DataManager interface to create and manage items (ex. add/update them into the DB) or to create methods inside the items class?
If you have an example of how to approach this situation feel free to share.
Thanks,
Eugen
Ray Paseur
Is this a classroom assignment? Can you show us an example of the code you've tried already?
Hmm... This comment might be helpful:
http://www.php.net/manual/en/language.oop5.abstract.php#82111
http://www.php.net/manual/en/language.oop5.abstract.php#82111
ASKER
It's not a classroom assignment, I'm new to OOP and I see that almost everyone has his own method of creating abstract classes. I quite don't fully understand some aspects, how should I approach this to be maintainable over time if I want to extend the items properties and category.
This should answer your questions:
"PHP 5 introduces abstract classes and methods."
http://php.net/manual/en/language.oop5.abstract.php
As this describes, an abstract class cannot be instantiated, but instead it is subclassed with concrete classes that can be. I can answer any OO questions, but I am not a PHP expert so can't help with the details. Glad to help further if I can...Mark
"PHP 5 introduces abstract classes and methods."
http://php.net/manual/en/language.oop5.abstract.php
As this describes, an abstract class cannot be instantiated, but instead it is subclassed with concrete classes that can be. I can answer any OO questions, but I am not a PHP expert so can't help with the details. Glad to help further if I can...Mark
Just going back to this in the original post, "I want to write an abstract class item."
Please tell us: why do you want to do that? Can you show us an example of the code you've tried already?
Thank you, ~Ray
Please tell us: why do you want to do that? Can you show us an example of the code you've tried already?
Thank you, ~Ray
ASKER
In the application I want to build, an item has properties and belongs to a category. Some of the Items are products to be sold, some are office inventory (furniture, appliances and so on).
I wanted to know how to best approach this so I can modify it over time and to have an easy readability over the code.
I thought it this way, every object is an item, but with different properties and purposes, but every item has a basic set of properties that I need in all of the situations.
abstract class item
{
// basic data model
// basic methods
}
interface dataManager
{
// CRUD
}
products extends items implements dataManager
{
// extra details
}
I wanted to know how to best approach this so I can modify it over time and to have an easy readability over the code.
I thought it this way, every object is an item, but with different properties and purposes, but every item has a basic set of properties that I need in all of the situations.
abstract class item
{
// basic data model
// basic methods
}
interface dataManager
{
// CRUD
}
products extends items implements dataManager
{
// extra details
}
That seems like a reasonable design. Can you please post the code you have started with?
ASKER CERTIFIED SOLUTION
membership
This solution is only available to members.
To access this solution, you must be a member of Experts Exchange.
btw, you may want to put this question in the OMG UML zone.
ASKER
I was a good Idea, thanks