i am trying to use $admin->function() instead $this->admin_model->function()
when i tried to declare a variable $admin=new Admin_model; in constructor and use it in other functions it gives error..
my code is given below, i don't know much about OOP concept, somebody please help.
class Admin extends CI_Controller {
var $admin;
function __construct() {
parent::__construct();
$this->load->model('admin_model');
$admin=new Admin_model;
}
public function index($value='')
{
if(!$admin->is_admin_logged_in()){
redirect('admin/login?r='.urlencode(current_url()));
}
$data['loggedin']=TRUE;
$data['account']=$this->session->all_userdata();
$this->load->view('pages/admin-home',isset($data)?$data:NULL);
}
}
presently i am using this method
public function login()// this function belongs to the same controller mentioned above
{
$r=isset($_GET['r'])?urldecode($_GET['r']):'admin';
$admin=new Admin_model;
if($admin->is_admin_logged_in()) redirect($r);
}
i don't want declare $admin=new Admin_model; in every single function and want to make the code look good and clean, so don't like to use $this->admin or $this->admin_model either.
You are trying to give an alias to a model (as what I can see)
All you have to do is:
class Admin extends CI_Controller {
function __construct() {
parent::__construct();
$this->load->model('admin_model', 'admin');
}
public function index($value='')
{
if(!$this->admin->is_admin_logged_in()){
redirect('admin/login?r='.urlencode(current_url()));
}
$data['loggedin']=TRUE;
$data['account']=$this->session->all_userdata();
$this->load->view('pages/admin-home',isset($data)?$data:NULL);
}
}
Notice where the alias of the model is given
$this->load->model('admin_model', 'admin');
And how it is used
if(!$this->admin->is_admin_logged_in()){
Related
contrller:News.php
This is my controller News
<?php class News extends CI_Controller {
public function __construct()
{
}
public function getShowIN_News()
{
return $result;
} } ?>
contrller:Category.php
This is my controller Category
<?php class Category extends CI_Controller {
public function __construct()
{
}
public function category()
{
require('news.php');
$test = new News();
$data["headlines"] = $test->getShowIN_News();
} }?>
By using an empty constructor, you're making it so that CI_Controller::__construct() isn't called, and that's where everything in the framework is initialized.
I know you've put it there to hack it so you can call one controller from another, but it is very intentionally made that way, exactly so you don't do this.
First off, I am relatively new to OOP as well as using an MVC, so I apologize if I do not use the right terminology or if I seem confused (because I am, haha)
I will start this off as basic as possible and if you need more information please let me know.
I am using Panique's MVC (Version HUGE)
https://github.com/panique/huge
So here goes nothing!
I have a base controller class that is setup like this...
Controller
<?php
class Controller {
public $View;
function __construct() {
$this->View = new View();
}
}
?>
With some extended controller classes like this (I will show two here)
IndexController
class IndexController extends Controller {
public function __construct() {
parent::__construct();
}
public function index() {
$this->View->render('index');
}
}
?>
ProfileController
class ProfileController extends Controller {
public function __construct() {
parent::__construct();
}
public function profile() {
$this->View->render('profile');
}
}
?>
My Question is, what does it take (if at all possible) to use an extended class method within another extended class method when both have the same parent class. Something Like...
<?php
class ProfileController extends Controller {
public function __construct() {
parent::__construct();
}
public function profile() {
$this->IndexController->index(); //Here I would like to use the method from the IndexController
}
}
?>
I have tried many of attempts to make this work but I think my lack of knowledge using OOP is hindering me. It seems that most everything I try except for a few cases, throws an error of...
Fatal error: Class 'IndexController' not found in blah/blah/ProfileController.php
I think if I could learn to target the extended class the right way I could manage the rest...hopefully ;)
There's no easy or elegant way to do that. You would need to instantiate the other class inside the class that needs to borrow the code, and that would probably cause many side effects in your app.
There may be other ways to do that, and that also depends on the possibilities / limitations of the framework, but thinking from the perspective of OOP in PHP, ignoring other factors, the best approach would be to implement the shared code in a method on Controller class:
<?php
class Controller {
public $View;
function __construct() {
$this->View = new View();
}
protected function myCustomCode() {
...
}
}
?>
And then call it normally on descendents:
<?php
class IndexController extends Controller {
public function __construct() {
parent::__construct();
}
public static function index() {
$this->myCustomCode();
$this->View->render('index');
}
}
?>
<?php
class ProfileController extends Controller {
public function __construct() {
parent::__construct();
}
public function profile() {
$this->myCustomCode();
...whatever...
}
}
?>
I don't see a better way of doing that. Besides, this is the natural way of OOP, where common stuff is up on class hierarchy (ancestors), never sideways or down (descendents). That helps keeping your code logical and easier to maintain.
Include the file of the class IndexController:
require_once('IndexController.php');
$this->controller = new IndexController();
Then invoke the method
$this->IndexController->index();
I'm new on Laravel 4 and I am trying to understand it.
is searched on google and on stackoverflow. Maybe i am not searching for the right syntax but i hope someone can help me, with it.
In CodeIgniter i understand it (probably). There I use in an Controller:
function __construct()
{ $this->load->model('example_m'); }
But how about in Laravel 4?
I figured out the following:
i make a static function in de model so i can access it everywhere. Example:
class Example extends Eloquent // this is the model
{
public static function TestExample(){
// do some stuff here
}
}
Or i could do it like this:
class ExampleController extends BaseController
{
public $test = null;
public function __construct()
{
$this->test = new Example();
}
public function index()
{
$this->test->TestExample();
}
}
My question is: Is there an other way and/or what is the correct way?
http://four.laravel.com/docs/ioc
App::bind('ExampleModelInterface', 'Example');
class ExampleController extends BaseController {
public function __construct(ExampleModelInterface $model)
{
$this->model = $model;
}
}
Do you mean simply accessing the method of a model?
Since they are static you use: Modell::method()
You might have to do a composer dump-autoload though so L4 autoloads it correctly.
I am having problems with my code. When I try to debug my web application I get the following error message....Call to a member function find() on a non-object.....here is my code
class TeamsController extends AppController {
var $name = 'Teams';
function index() {
$this->set('teams', $this->team->find('all'));
}
function Welcome() {
}
}
I am trying to display records from my MySQL database. Now with that said, I did this tutorial and I followed the instructions down to the tee.....but somehow my code has bugs. The only difference between my code and the code of the tutorial I did is the variable names...and the controller names....and the I dont have the hello world function... Here is a sample of the code from the tutorial I did....
class PostsController extends AppController {
var $name = 'Posts';
function index() {
$this->set('posts', $this->Post->find('all'));
}
function hello_world() {
}
}
With that said, am I suppose to declare an instance of an object to get this to work?
It's likely a case sensitivity issue:
function index() {
$this->set('teams', $this->Team->find('all'));
}
If not, ensure your controller has access to the Teams model (e.g. $uses).
It seems that it is impossible to pass a variable to a Model's Constructor in Code Igniter. Maybe I'm missing something in MVC or Code Igniter, but I don't understand what.
In my case, should I use librairies instead of Model ? (librairies actually accept parameters)
Actually my code is looking like this, and I think it's a bit strange :
Controller :
class User extends CI_Controller {
public function user($user_id) {
$this->load->model('user');
$this->user->setId($user_id);
$data['username'] = $this->user->getName();
// Isn't it a bit strange ? I can load the class User even if the User doesn't mean anything ?
}
}
Model :
class User extends CI_Model {
private $id;
private $name;
public function setId($id) {
$this->id = $id;
// Retrieve data from DB...
$this->name = $retrieved_data['name'];
}
public function getName() {
return $this->name;
}
}
Try this:
Controller:
class User extends CI_Controller {
public function user($user_id) {
$this->load->model('user_model');
$data['username'] = $this->user_model->getName($user_id);
}
}
Model:
class User_model extends CI_Model {
public function getName($user_id) {
//Retrieve data from DB using the $user_id variable...
return $retrieved_data['name'];
}
}
Seems like a more logical and faster way to do it. Not sure if it complies with the rest of your code, but it might help you track down the errors.