Re: Silly OOP question

[Daniel Schierbeck <dasch@xxxxxxxxxx>]

Brent Clements wrote:
> I've always wondered this about OOP and maybe you guys can answer this question.
>
> I'm writing a php application and I'm trying to figure out the correct way to right the oop part of this application.
>
> for instance.
>
> I have a "project.class" file that has functions for dealing with individual projects because you break down ideas into singular entities in OOP(as I understand it)
>
> But what if I wanted to deal with multiple projects such as getting a list of the projects in my database, should I create a function in the "project.class" to handle the now plural request, or should I create a "projects.class" file that has a function called "getProjects".
>
> Hopefully I'm explaining this question right. It makes sense in my own head. :-)
>
> Thanks,
> Brent
Well, if I get you right, you have a class named Project holds 
information about a project. Now you want a list of the current 
projects. I'd make a new class, named ProjectList or something similar, 
that can be used to administrate your projects.


class Project
{
	public $name;    // The project's name
	public $ownerID; // The user ID of the project's owner
	
	/* The constructor. Note: this only works in PHP5 */
	public function __construct ($id)
	{
		$db = mysql_connect();
		// Get project info...
		
		$this->name    = $result['name'];
		$this->ownerID = $result['owner'];
	}
}

class ProjectList
{
	public $projects = array();

	public function __construct ()
	{
		$db     = mysql_connect();
		$query  = mysql_query('SELECT id FROM projects');
		$result = mysql_fetch_array($query);

		foreach ($result as $project_id) {
			$this->projects[$project_id] = new Project($project_id);
		}
	}

	public function listProjects ()
	{
		return $this->projects;
	}

	public function addProject ($name, $owner)
	{
		// ...
	}

	public function deleteProject ($id)
	{
		// ...
	}
}
--
Daniel Schierbeck

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