TalkPHP - Return self ?

TalkPHP (http://www.talkphp.com/forums.php)

- Advanced PHP Programming (http://www.talkphp.com/advanced-php-programming/)

- - Return self ? (http://www.talkphp.com/advanced-php-programming/3597-return-self.html)

Tanax

11-12-2008 07:28 PM

Return self ?

Hi!

You know when you want to use chains in regular classes, you return $this?

PHP Code:


		
			
public function smthng()
{

       $this->somevar = 'smthng';
       return $this;

}

My question regards how you do this when the whole class is static(it's a factory)?

PHP Code:


		
			
public static function smthng()
{

       self::$somevar = 'smthng';
       return self;

}

??

Also, if this is possible, how does the actual chaining work?
I mean.. do you use it like:

PHP Code:


		
			
FACTORY::smthng()::smthng()::smthng;

Runar

11-12-2008 08:06 PM

I know I used $this in a situation similar to your first example. In your last example, the actual chaining, I did something like this:

PHP Code:


		
			
$class->first()->second();

I am not sure if there is any significant difference on static and non-static classes when chaining, but I guess other people will answer that question.

Salathe

11-12-2008 09:03 PM

As far as I'm aware, that's not possible at the moment.

Tanax

11-12-2008 10:57 PM

Quote:

Originally Posted by Runar (Post 19571)

I know I used $this in a situation similar to your first example. In your last example, the actual chaining, I did something like this:

PHP Code:


		
			
$class->first()->second();

I am not sure if there is any significant difference on static and non-static classes when chaining, but I guess other people will answer that question.

Yes, I know how to do actual chainings with the regular classes, it's just the little problem that this isn't a regular class :-(

Quote:

Originally Posted by Salathe (Post 19572)

As far as I'm aware, that's not possible at the moment.

Doh! Okey, thanks!

jlodell

02-22-2009 07:37 AM

I'm interested in why you would try to call the same method over and over like that or was that just kind of for show? Do all the methods have to be static, or could you just implement the static factory method(s) and then normal methods for any others:
ClassName::factory()->meth()->again()\
static chaining wont work because it doesn't use a class instance for reference, it uses a class name

Tanax

02-27-2009 11:21 PM

I don't wanna call the same method over and over xD I just wanted to get my point out, if it was possible to chain static methods

jlodell

02-28-2009 06:57 AM

@tanax: I understand, and I'm definitely not flaming. Just new to the forum and wanted to post a couple things. Just threw the explanation in for those that might not understand the method chaining process or why static methods cannot be chained. Cheers.

Tanax

02-28-2009 12:46 PM

Sure np ! I didn't think you were flaming though, I just wanted to make my point more clear if someone didn't understand ^^

frome

01-18-2013 07:43 AM

thought this was a interesting topic so i made a experiment.

I make a class with static functions and used singleton pattern.

like so

PHP Code:


		
			
<?php
class helloWorld{

    private static $instance = false;

    static private function thisInstance(){
        if(self::$instance === false){
            self::$instance = new helloWorld;
        }
        return self::$instance;
    }

    static public function talk($arg){
        echo $arg;
        return self::thisInstance();
    }

}

then i used

PHP Code:


		
			
helloWorld::talk('Yo yo world.')->talk(' sup y\'all');

and i worked like a charm :)

output: Yo yo world sup y'all

hope it helps 6 years later XD

wangna

01-26-2013 07:59 AM

I know I used $this in a situation similar to your first example.

__________________________
Abercrombie Sverige
Lancel Soldes
Nike Free Günstig

All times are GMT. The time now is 03:28 PM.