Is this OO Possible? (Method Chaining)

Aaron · 08-02-2008, 06:16 PM

PHP Code:


			
class MyClass

{

  public function instSql()

  {

    $sql = new Sql;

  }

}

class Sql

{

  private function Sql() // Constructor

  {

    // Connect to the database, blah blah blah

    return $this;

  }



  public function Query()

  {

    // Send a query

    return $result;

  }

}





// Later...



$cl = new MyClass;

$cl->instSql->Query();

Uhh... That kind of got confusing... Anyway, would something like this work?

Alex · 08-02-2008, 06:39 PM

PHP Code:


			
class MyClass 
{ 
  public function instSql() 
  { 
    return new Sql; 
  } 
} 
class Sql 
{ 
  private function Sql() // Constructor 
  { 
    // Connect to the database, blah blah blah 
    return $this; 
  } 

  public function Query() 
  { 
    // Send a query 
    return $result; 
  } 
} 


// Later... 

$cl = new MyClass; 
$cl->instSql()->Query();

The instSql() should return an instance of an object, then you can 'chain' the calls.

Aaron · 08-03-2008, 12:13 AM

Ahh, so it would work?

Thanks for your help.

Jim · 08-04-2008, 01:46 PM

Don't know if you've already read it, this article would be nice for you to read: Using the factory pattern (mad rantings of a mind without coffee)

The Factory pattern

edit: Wtf, why does ^ ^ together change into

? :(

Aaron · 08-05-2008, 07:01 AM

Jim, you always find the most dusty yet amazing articles. Thanks a lot man.

You can disable smily's though, can't you?