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+--- Thread: New with Code Igniter - Application structure (/showthread.php?tid=16137)
New with Code Igniter - Application structure - El Forum - 03-03-2009
[eluser]bisol[/eluser]
I've beginning my website.
Tell me if I'm wrong.
Edit
I think I'm wrong because on each page, I load the column2.php and column3.php (view including view) but I need to write the SQL into each part of the main controller.
example.
function : Home
- Load top10 web site
- load home
function : Contact
- Load top10 web site
- load contact
....
End edit
Controller
Code:
class Accueil extends Controller {
//Fonction de construction
function __construct()
{
parent::Controller();
}
//Page affichée si aucun paramètre n'est envoyé
function index()
{
//Header
$data['header_title'] ='Annuaire généraliste gratuit beegoo';
$data['header_keyword'] = 'beegoo, annuaire, annuaire generaliste, internet';
$data['header_description'] = 'Annuaire beegoo, annuaire généraliste gratuit avec lien en dur et sans lien de retour';
$data['header_css'] = '/default.css';
//Loading data sql
$data['test'] = $this->db->version();
$this->load->view('accueil', $data);
}
function contact()
{
//Loading data sql
$data['test'] = $this->db->version(); /// THIS PART IS THE SAME THAT THE ONE IN "index"
$data['title'] = "test"
}
}View (accueil)
Code:
<?php if ( ! defined('BASEPATH')) exit('No direct script access allowed');
$this->load->view("header");
//$this->load->view("");
$this->load->view("footer");
?>View (header)
Code:
<?php if ( ! defined('BASEPATH')) exit('No direct script access allowed'); ?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html >
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<meta name="keywords" content="<?=$header_keyword?>" />
<meta name="description" content="<?=$header_description?>" />
<link rel="stylesheet" type="text/css" href="<?=$header_css?>" />
<title><?=$header_title?></title>
</head>
<body>New with Code Igniter - Application structure - El Forum - 03-03-2009
[eluser]Fero[/eluser]
$data['test'] = $this->db->version();
what the heck is this???
New with Code Igniter - Application structure - El Forum - 03-03-2009
[eluser]bisol[/eluser]
This is only an example to describe my problem. This code is a code needed in each part of the main page (top10, home, ....).
Now, I will create a model file and called it like this : $data[‘top_10’] = $this->MainModel->get_top_10();
New with Code Igniter - Application structure - El Forum - 03-05-2009
[eluser]ayukawaa[/eluser]
This is well documented in the forums and it has been answered many times I think.
For me, instead of creating many controllers that extend the 'Controller' (repeating code in all the controllers), I create one MY_Controller library which extends Controller and I put in there all the common code.
Then, all the controllers must extend My_Controller, NOT Controller
For example, create your controllers like
Code:
class ControllerExample extends MY_Controller {
function ControllerExample()
{
//this call the MY_CONTROLLER (parent) constructor
parent::MY_Controller();
}
function index()
{
//generate one $config array with all the parts that are UNIQUE in this controller
$data['var1'] = ...
$data['var2'] = ...
$data['var3'] = ...
$config['main_content'] = $this->load->view('main_content', $data, true);
$config['section1'] = $this->load->view('section1', $data, true);
$config['section2'] = $this->load->view('section2', $data, true);
$config['section3'] = $this->load->view('section3', $data, true);
(...)
//End, screen output
$this->output_screen( $config );
}
(...)
}Code:
class MY_Controller extends Controller{
function MY_Controller()
{
//this call the parent constructor
parent::Controller();
}
//ONLY ONE output point, pass all data through array
function output_screen($config){
//append to the $config array all the common data you need (menus, etc)
$data['var1'] = ...
$data['var2'] = ...
$data['var3'] = ...
$config['commonsection1'] = $this->load->view('commonsection1', $data, true);
$config['commonsection2'] = $this->load->view('commonsection2', $data, true);
$config['commonsection3'] = $this->load->view('commonsection3', $data, true);
(...)
//SCREEN OUTPUT (this should be the only one outputting to screen)
$this->load->view('template_of_sections', $config);
}
(...)
}And that's all.
^_^
New with Code Igniter - Application structure - El Forum - 04-03-2009
[eluser]taro uma[/eluser]
does anyone have an example of how you pass variables from MY_Controller to a controller that extends it?
In this last example, I kinda see how this is loading a view that has the variables in it, but what if you just want to pass the variables without having a view? I just want to pass the $data array along and access it in the controller that extends MY_Controller, and i don't exactly understand how this is done.
New with Code Igniter - Application structure - El Forum - 04-03-2009
[eluser]jedd[/eluser]
[quote author="taro uma" date="1238813037"]does anyone have an example of how you pass variables from MY_Controller to a controller that extends it?[/quote]
How about [url="http://ellislab.com/forums/viewreply/553141/"]this one[/url]?
New with Code Igniter - Application structure - El Forum - 04-03-2009
[eluser]taro uma[/eluser]
I've seen that and it helped some, I was able to create the MY_Controller based on that info. But I still can't see how to get the variables from MY_Controller to the controller that is extending it.
Here is what I have so far, I just can't get the $data from MY_Controller to pass along.
Code:
class MY_Controller extends Controller {
function MY_Controller()
{
// load controller parent
parent::Controller();
$this->data['sitewide']['mainNav'] = $this->getMainNav();
$this->data['sitewide']['sideBar'] = $this->getSideBar();
$this->data['sitewide']['footer'] = $this->getFooter();
}
private function getMainNav()
{
$mainNav = "asdfg1";
return $mainNav;
}
private function getSideBar()
{
$sideBar= "asdfg2";
return $sideBar;
}
private function getFooter()
{
$footer= "asdfg3";
return $footer;
}
}but it's not giving me those variables in a control that extends it:
Code:
class FrontPage extends MY_Controller {
function __construct(){
parent::MY_Controller();
}
function index()
{
$this->load->model('FrontPageModel','',TRUE);
$data['frontpagedata'] = $this->FrontPageModel->get_frontpage_content();
$this->load->view('frontpage',$data);
}
}This passes $data along to my view, which just echos out the $data variables (right now).
I am expecting $sitewide to be an array that exists with my site wide stuff in it. But it doesn't, so I know I'm doing it wrong. the load->view is passing $data along, because in the view I have the $frontpagedata, which is an array of that builds the content part of the page. But trying to use $sitewide , like echo $sitewide['mainNav') gives me as error "Message: Undefined variable: sitewide"
So I see where I'm doing it differently as far as not loading a view in MY_Controller, from the example you show. But I can't see why the variables aren't in the $data array.
In my view, I have this:
Code:
<?php echo $sitewide['mainNav']; ?>and it returns this error message:
A PHP Error was encountered
Severity: Notice
Message: Undefined variable: sitewide
Filename: views/frontpage.php
Line Number: 34
New with Code Igniter - Application structure - El Forum - 04-03-2009
[eluser]jedd[/eluser]
In your (normal) controller, change this line:
Code:
$this->load->view('frontpage',$data);to this:
Code:
$this->load->view('frontpage',$this->data);... and give it another try.
New with Code Igniter - Application structure - El Forum - 04-03-2009
[eluser]taro uma[/eluser]
Ah. That works. So I can see now that $this->data and $data are not the same.
But I don't understand why in MY_Controller, I can't just say
Code:
$data['sitewide']['mainNav'] = $this->getMainNav();instead of
Code:
$this->data['sitewide']['mainNav'] = $this->getMainNav();what is the $this-> part doing to make the variables available to the normal controller?
New with Code Igniter - Application structure - El Forum - 04-04-2009
[eluser]TheFuzzy0ne[/eluser]
It's a question of scope. $data is available within the confines of the function it's declared in, if you declare $data as a class variable, it's available to the whole class, and accessed via $this->data. $this->something means you want to access a variable that's in the global scope of the current object. $this won't work outside of an object.
Code:
class Example {
var $data = 'Class data';
function getData($from_class=FALSE)
{
$data = "Function data";
if ($from_class === TRUE)
{
return $this->data; # returns the class variable
}
else
{
return $data; # returns the function variable.
}
}
}
$example = new Example();
echo $example->getData() . "\n"; # Echoes "Function data"
echo $example->getData(TRUE) . "\n"; # Echoes "Class data"I hope this helps without causing more confusion.