Re: Decorator with public methods
| From: | phphelp -- kbk | Date: | Sat, 27 Dec 2008 19:56:26 +0000 |
| Subject: | Re: Decorator with public methods | ||
| References: | 1 | Groups: | php.general |
| Request: | Send a blank email to php-general+get-285109@lists.php.net to get a copy of this message | ||
On Dec 26, 2008, at 7:53 PM, Larry Garfield wrote:
I have an object to which I want to add behavior (methods). I cannot use inheritance here because the object is already of a type or subtype (vis, I am already using inheritance for something else), and because I want to be able to add multiple types of behavior at runtime.If I understand what you are wanting to accomplish, perhaps a simpler solution: Whenever I create a function in a core-level class, I add pre- and post- execution language to it. For example: class foo_bar { function foo () {
if (!on_foo()) {
return FALSE;
}
// normal foo code
// normal foo code
// normal foo code
// normal foo code
// normal foo code
if (!more_foo()) {
return FALSE;
}
}
function on_foo() {
return TRUE;} function more_foo() {
return TRUE;} } -- then in the child class: class child_bar extends foo_bar { function on_foo() { // runtime code // runtime code // runtime code // runtime code return TRUE; // (or FALSE) } } Ken