Im trying to inherit a constant var which are in another file/class. But I tried almost everything and I can't do it for some reason, can anyone tell me what is wrong or just are happening in my code please?
this is my main class that i called BasePage.
class BasePage extends CI_Controller {
const $TITLE = "My Own DB";
}
and this is the other class/file which is trying to inherit to other class by giving the constant var TITLE into an array.
<?php
defined('BASEPATH') OR exit('No direct script access allowed');
require 'BasePage.php';
class Home extends BasePage {
public function index()
{
$data = array('title' => $TITLE);
$this->load->helper('url');
$this->load->view('page_login', $data);
}
}
The constant should not have a $ at the beginning.
And you don't access it like $TITLE, or just TITLE, but with self::TITLE. In this case it would be most correct to use parent::TITLE, since it belongs to a parent class.
This should work:
class BasePage extends CI_Controller {
const TITLE = "My Own DB";
}
<?php
defined('BASEPATH') OR exit('No direct script access allowed');
require 'BasePage.php';
class Home extends BasePage {
public function index()
{
$data = array('title' => parent::TITLE);
$this->load->helper('url');
$this->load->view('page_login', $data);
}
}
Related
I have a base controller which has base methods
<?php
defined('BASEPATH') OR exit('No direct script access allowed');
class MY_Championship extends CI_Controller {
protected $championship_id;
public function __construct($_championship_id)
{
parent::__construct();
$championship_id = $_championship_id;
}
public function results($page)
{
//Some code here
}
}
And when I try to implement My_Championship class in another controller the output is empty even when I pass parameter '1' in the constructor
<?php
defined('BASEPATH') OR exit('No direct script access allowed');
require_once("application/core/MY_Championship.php");
class Eurobasket2017 extends MY_Championship {
public function __construct()
{
parent::__construct(1);
file_put_contents("test.txt", $this->championship_id);
}
}
The main problem is that depending on which parameter I give the constructor it changes records from the database: for example if I give parameter 1 it loads eurobasket games and if I give parameter 2 it loads nba games and so on..
Class MY_Championship constructor does not update its own instances championship_id property
change
$championship_id = $_championship_id;
into
$this->championship_id = $_championship_id;
If you don't do this the
$championship_id var will be lost as soon as the parent constructor is finished.
I'm using Codeigniter 3 and I need some data available to all methods. I will query the data from the database and then I need to display it on every page.
I have created a MY_Controller extending CI_Controller and saved it in /application/core/
But I am getting this error:
Fatal error: Call to undefined method Area_model::get_user_locations()
MY_Controller:
<?php defined('BASEPATH') OR exit('No direct script access allowed');
class MY_Controller extends CI_Controller {
public $location_data;
function __construct()
{
parent::__construct();
$this->load->database();
$this->load->model('area_model');
$org_id = $this->session->userdata('org_id');
$this->location_data = $this->area_model->get_user_locations($org_id);
}
}
Can i access models and the database from within MY_controller?
Area_model.php
// get all areas for an organisation
public function get_user_locations($org_id) {
$areas = $this->db->get_where('areas', array('org_id' => $org_id));
$area_array = $areas->result_array();
return $area_array;
}
MY_Controller
not used to direct any function to __construct()
__construct to only load to any model
write other function to MY_Controller look like this
<?php defined('BASEPATH') OR exit('No direct script access allowed');
class MY_Controller extends CI_Controller
{
public $location_data;
function __construct()
{
parent::__construct();
$this->load->database();
$this->load->model('area_model');
$org_id = $this->session->userdata('org_id');
}
}
function functionname()
{
$this->location_data = $this->area_model->get_user_locations($org_id);
}
Area_model.php
public function get_user_locations($org_id)
{
$areas = $this->db->get_where('areas', array('org_id' => $org_id));
$area_array = $areas->result_array();
return $area_array;
}
I am fairly new to Codeigniter and am trying to call in a function from my model but I cannot get it to work. Can anyone see what I am doing wrong here?
Controller (farm.php):
<?php defined('BASEPATH') OR exit('No direct script access allowed');
class Farm extends CI_Controller {
function __construct()
{
parent::__construct();
$this->load->model('harvest_first');
}
function harvest()
{
echo $this->harvest_first->harvest();
}
}
Model (harvest_first.php):
<?php if ( ! defined('BASEPATH')) exit('No direct script access allowed');
class Harvest_first extends CI_Model
{
public function __construct()
{
parent::__construct();
}
public function harvest(){
return "THE FUNCTION";
}
}
?>
I am trying to echo "THE FUNCTION", but no matter what I do I cannot get it to work as expected.
Thanks,
Simon
Try this
class Harvest_first extends CI_Model
change to :
class Harvest_first_model extends CI_Model
and in controller call like this:
$this->load->model('harvest_first_model');
and
$this->harvest_first_model->harvest();
Check here
There is no need to add "_model" to model that depends on you
just Load the Model and that its use autoload.php and add model there it is a good pratices
I have been working on a session validation for my login to make sure that a user is logged in to view pages. I keep getting this error:
Fatal error: Class 'MY_Staffcontroller' not found in /usr/local/var/www/CodeTest
/ci/application/controllers/staff_c.php on line 3
My staff_c page looks like so :
<?php if ( ! defined('BASEPATH')) exit('No direct script access allowed');
class Staff_c extends MY_Staffcontroller {
function homepage()
{
$data['main_content'] = 'homepage_view';
$this->load->view('includes/template', $data);
}
}
I have been reading same questions all over the place and they say the same thing pretty much...
Is your controller located in application/core?
Well yes it is. I can't seem to get passed this hump!
This is the code within My_Staffcontroller.php:
<?php if ( ! defined('BASEPATH')) exit('No direct script access allowed');
class MY_staffcontroller extends CI_Controller {
function __construct()
{
parent::__construct();
$loggedin = $this->session->userdata('loggedin');
if(!isset($loggedin) || $loggedin != TRUE);
{
die($this->load->view('denied'));
}
}
}
I know this is user error as this is only my second day with CodeIgniter but I can't seem to find proper workaround for this?
I have tried this tutorial and still nothing and also this
Even following this video has me stuck on the session part.
And I just can not get this to work.
Remember Linux is case-sensative whereas Windows is case-insensative.
place you're MY_Staffcontroller inside application/core/MY_Controller.php file
Your MY_Controller.php file should look like this (minus all you're other functions, this is a minimal example)
<?php if ( ! defined('BASEPATH')) exit('No direct script access allowed');
class MY_Controller extends CI_Controller
{
public function __construct()
{
parent::__construct();
}
}
class MY_Staffcontroller extends MY_Controller
{
public function __construct()
{
parent::__construct();
}
public function sayHello()
{
echo "Hello, I am a function within MY_Staffcontroller.php";
}
}
Example
This will be located in /application/controllers directory
Basically any protected and public functions located in either MY_Controller OR MY_Staffcontroller will be accessible from derived controllers that extend the extended controller. In this case it would be MY_Staffcontroller
class Public_Staff_Controller extends MY_Staffcontroller
{
public function __construct()
{
parent::__construct();
}
public function index()
{
$this->sayHello();
}
}
/* end of file /application/core/MY_Controller.php */
Let's say we have module called core_crud with something like this in the controller:
if (!defined('BASEPATH'))
exit('No direct script access allowed');
class Core_crud extends MX_Controller
{
function __construct()
{
parent::__construct();
$this->load->model('mdl_core_crud');
}
public function index()
{
// code goes here
}
}
And now I want to extend this module with another module called shop_crud. How would the basic controller for this shop_crud module look like? I mean I want to inherit all the controller methods from core_crud and all the model stuff too.
Structure of the Modules
/modules
/core_crud
/controllers
/core_crud.php
/models
/views
/shop_curd
/controllers
/shop_crud.php
/models
/views
Code in core_crud.php
<?php
if (!defined('BASEPATH'))
exit('No direct script access allowed');
class Core_crud extends MX_Controller
{
function __construct()
{
parent::__construct();
$this->load->model('mdl_core_crud');
}
public function index()
{
// code goes here
}
public function mymethod($param1 = '', $param2 = '')
{
return 'Hello, I am called with paramaters' . $param1 . ' and ' . $param2;
}
}
Code in shop_crud.php
<?php
if (!defined('BASEPATH'))
exit('No direct script access allowed');
class Shop_crud extends MX_Controller
{
public function __construct()
{
parent::__construct();
//$this->load->model('mdl_shop_curd');
}
public function testmethod()
{
// output directly
$this->load->controller('core_crud/mymethod', array('hello', 'world'));
// capture the output in variables
$myvar = $this->load->controller('core_crud/mymethod', array('hello', 'world'), TRUE);
}
}
So instead of extending the whole module/controller I prefer just to call the method which is required. It is simple and easy too.
Note If module name and controller name are different then you have to pass the path
module_name/controller_name/mymethod
EDIT to support EXTENDS
File structure
The code in core_crud.php.
if (!defined('BASEPATH'))
exit('No direct script access allowed');
class Core_crud extends MX_Controller
{
public function __construct()
{
parent::__construct();
$this->load->model('core_crud/mdl_core_crud');
}
public function index()
{
return 'index';
}
public function check_method($param1 = '')
{
return 'I am from controller core_crud. ' . $this->mdl_core_crud->hello_model() . ' Param is ' . $param1;
}
}
The code in mdl_core_crud.php
if (!defined('BASEPATH'))
exit('No direct script access allowed');
class mdl_core_crud extends CI_Model
{
public function hello_model()
{
return 'I am from model mdl_core_crud.';
}
}
The code in shop_crud.php.
if (!defined('BASEPATH'))
exit('No direct script access allowed');
include_once APPPATH . '/modules/core_crud/controllers/core_crud.php';
class Shop_crud extends Core_crud
{
public function __construct()
{
parent::__construct();
}
public function index()
{
echo parent::check_method('Working.');
}
}
Output :- I am from controller core_crud. I am from model
mdl_core_crud. Param is Working.
Hope this helps. Thanks!!
If you are loading the models in the parent class or in the construct then it should be inherited in shop_crud. are you not looking to do class Shop_crud extends Core_crud {? is parent::__construct() not retaining the construct for you?
Is this something you can handle with routing to the same controller rather than extending a controller (wanting to inherit both the controller and the model seems strange to me or something you could handle with a route and a private function in the class to handle the logic)?
"Controllers" this name defines it's functionality. The controller is used to control a particular section. So in MVC framework I think it's better to create individual controller for individual module. But you can reuse the model i.e. you can call one model's function in another model. For this
First load your model like $this->load->model("modelName"); in your controller
Then call the function like $this->modelname->functionName();
From what I can gather, you have to require the parent controller that you are extending. This isn't exactly ideal, but I'll look into a better way to do this later on. For now, I've created a simple function to do the inclusion.
function extend_module($module) {
$path = realpath(APPPATH) . '/modules/'. $module.'/controllers/'.ucfirst($module).'.php';
require_once($path);
}
Usage:
extend_module('some_module');
class othe_ module extends some_module {
NOTE: The function needs to be available outside of the CI object, so put it somewhere like your main index.php file.
Also note: As these variables are used to reference the local file system, do not dynamically assign them directly from user generated input. Doing so would cause multiple file system vulnerabilities.
Platform: CI3 + Bonfire 8 HMVC