UPDATE: I am not alone in my pondering on this issue and it seems it is indeed a bug. See here. The day it is fixed is going to be a fantastic day! :)
This started out as I love PHP traits! I'm going to use them everywhere! ^_^
and now it has turned into a Thought Exercise / Learning Experience >_<
.
Consider the following example:
trait TheErrorOfYourWays{
public function booboo(){
echo 'You had a booboo :(';
}
}
trait SpectacularStuff1 {
use TheErrorOfYourWays;
}
trait SpectacularStuff2 {
use TheErrorOfYourWays;
}
class DoSomethingSpectacular {
use SpectacularStuff1, SpectacularStuff2;
}
This results in (obviously not so obviously):
Fatal error: Trait method booboo has not been applied, because there are collisions with other trait methods on DoSomethingSpectacular.
So my question: How do I resolve method conflicts in traits? Is it possible to achieve overlapping trait "inheritance"? If so, what is the "right" way to do this?
Why I want to do this:
What I have tried:
A fantastic array of "as", aliases, even insteadof, in different places, times, universes, etc. Including, but not limited to:
trait SpectacularStuff1 {
use TheErrorOfYourWays{
TheErrorOfYourWays::booboo as booboo1;
}
}
trait SpectacularStuff2 {
use TheErrorOfYourWays{
TheErrorOfYourWays::booboo as booboo2;
}
}
class DoSomethingSpectacular {
use SpectacularStuff1, SpectacularStuff2 {
/* Tried separately, but included here for brevity's sake */
SpectacularStuff1::booboo as booboo3;
SpectacularStuff2::booboo as booboo4;
}
}
AND
use TheErrorOfYourWays as Erroneous1;
trait SpectacularStuff1 {
use Erroneous1{
Erroneous1::booboo as booboo1;
}
}
use TheErrorOfYourWays as Erroneous2;
trait SpectacularStuff2 {
use Erroneous2{
Erroneous2::booboo as booboo2;
}
}
I understand that:
Thanks!
So the unofficial "official" answer is:
You can do it without aliasing, insteadof or anything! But not yet...
I upgraded from 5.5.1 to 5.5.6 but it was all in vain. I will update this answer when the fix becomes available. Interesting to note is that you can call trait static functions directly. The following example works:
trait TheErrorOfYourWays{
public static function booboo($thisTrait){
echo 'You had a booboo :( in '.$thisTrait.'<br>';
}
}
trait SpectacularStuff1 {
public function boobooTest1(){
TheErrorOfYourWays::booboo(__TRAIT__);
}
}
trait SpectacularStuff2 {
public function boobooTest2(){
TheErrorOfYourWays::booboo(__TRAIT__);
}
}
class DoSomethingSpectacular {
use SpectacularStuff1, SpectacularStuff2;
}
$boobooAChoo = new DoSomethingSpectacular();
$boobooAChoo->boobooTest1(); // You had a booboo :( in SpectacularStuff1
$boobooAChoo->boobooTest2(); // You had a booboo :( in SpectacularStuff2
Yes, yes, you can also do that with a class but classes are soooo last season.