Code Igniter - how would you structure this site? - php

I'm going to do my first site in code ignitor, a fairly basic site like this:
home
login / register
members area
protected page 1
protected page 2
protected page 3
general info section
page 1
page 2
page 3 (dynamic table of reports)
about section
page 1
page 2
blog section
listing
article page
I've gone through a couple of basic tuts and have read some of the documentation but still feel unsure on what would be the best way to structure this. Could anyone that is experienced with CI show me an example of how they' do it?
some specific Qs are:
header with nav panel will be the same on all pages. normally i'd code that as an include with if/else to show highlighted current section. I guess I'd just keep this as an include (view) and either load it first via the controller or include it in every view?
I'd envisage having a model called 'user' which will handle the login and registration, a model called 'blog' and a model called 'reports'. Does that sound right?
for static sections like about, I guess there'd be no model and i'd just have a controller with a function for each static page? i.e. about.php with page1(), page2() and all they do is load static views?

1 -> To fix this problem, I decided to use my own controller like this
Using CI 2.x, create a file under app/core called MY_Controller.php like so :
<?php
class MY_Controller extends CI_Controller {
function __construct() {
parent::__construct();
}
public function loadView($view) {
$this->load->view('header');
$this->load->view($view);
$this->load->view('footer');
}
}
And then I extend this controller instead of the CI one. Be sure that your $config['subclass_prefix'] = 'MY_'; in the config.php file.
2-> yes
3-> thats about it :D

I'm a newbie here (codeigniter) but:
For headers/footers I adopted the template strategy from here (first alternative). Worked nice.
Before models, I'd plan the controllers -roughly one per each section. I made all them inherit from a MY_controller here I place common funcionalilty. And yours models seems about right to me. I think them rathar as DAOs, or "service objects" that provide access to the database and not much more. GEneral intelligence of the site (if needed) should be in a custom library, or inside the controllers.
Yes.

You should use an CI library to handle your user registration and per page authorisation.
Here's a very simple example on how you could do it. Keep in mind that CI uses the MVC pattern
class Reports extends CI_Controller {
public function __construct() {
parent::__construct();
// load database if needed
// load a model if needed
}
public function page() {
//get the page requested
$page_id = $this->uri->segments(2);
// based on the page_id do something.
$data['somedata'] = 'About us data here';
// this is an actual file loaded from the template view
$data['maincontent'] = 'my_page';
$this->load->view('template',$data);
}
}
class About extends CI_Controller {
public function __construct() {
parent::__construct();
// load database if needed for this page
}
public function page() {
// same here
//get the page requested
$page_id = $this->uri->segments(2);
// based on the page_id do something.
$data['somedata'] = 'About us data here';
// this is an actual file loaded from the template view
$data['main_content'] = 'my_about_page';
$this->load->view('template',$data);
}
}
in the template file
$this->load->view('template/header');
$this->load->view('template/nav');
$this->load->view($main_content);
$this->load->view('template/footer');

Related

how to retrieve data in view Independent of controller in codeigniter

I have a sidebar in my site that receive some information from db and I can't use controller for retrieve data because I have different controller and same sidebar. How can I print this data in view page.
when I wrote in P.h.P code in the view it shows an error that it cant define variables.
How could I do this?
When you find that you need the same code in many different controllers a "custom library" (class) is the perfect choice. Documentation for creating your own libraries is found HERE.
Controllers should be using models to get data from the database. Custom libraries can also use models just like controllers. Here is a very basic custom library called Sidebar. It depends on a model (sidebar_model) that will not be shown. The purpose of the Sidebar library is to return the variables need by the sidebar_view file.
File: application/libraries/Sidebar.php
<?php
defined('BASEPATH') OR exit('No direct script access allowed');
class Sidebar
{
protected $CI; // Read the documentation link to see why this is needed.
public function __construct()
{
$this->CI = & get_instance();
$this->CI->load->database(); //only needed if not already done
$this->CI->load->model('sidebar_model');
}
public function get_sidebar_data()
{
return $this->CI->sidebar_model->get_sidebar();
}
}
The library method get_sidebar_data() returns the variables for the view.
Here is a controller that uses the custom library. It will use the custom library and a view file (not shown) containing HTML for the sidebar.
File: application/controllers/Main.php
class Main extends CI_Controller
{
function __construct()
{
parent::__construct();
$this->load->library('sidebar'); //can also be autoloaded
}
public function index()
{
$data['sidebar'] = $this->sidebar->get_sidebar();
$this->load
->view('banner')
->view('sidebar_view', $data)
->view('main_view')
->view('footer_view');
}
}
Any other controller that needs to show the sidebar would use this same pattern.
This controller loads four different view files and is using "method chaining" which is encouraged. Method chaining executes a tiny bit faster. But the best reason for using it? Less typing.
The method chaning could also be type like this:
$this->load->view('banner')->view('sidebar_view', $data)->view('main_view')->view('footer_view');
But, IMO, putting each ->view() on a separate line makes it easier to read.
You can create a helper for your common tasks. Then create a function for your sidebar and call it where you need it. Check this link for more details about creating helper
You can also create a library for it. Although it will not a very good choice.
create sidebar (view page) and Call model directly inside that sidebar (view page).
secondly call sidebar (view page) directly inside all other view pages.

Load a single module of page in views codeigniter framework

I am developing a web app using codeigniter framework. My application has a fixed header and footer.I want to middle section (ie the body) of my application to load when the user goes to various pages which are available to him and make the header and footer constant.
(hackerrank.com ... I was talking about a website similar to this one ... after login into this website ... the header and the sidebar of this remains constant and they load the remaining page ... how can we implement it using CI framework)
Is there any way through which I can achieve this?
I am performing the following actions which is making me to load the complete website(Its like reloading the entire page :/)
As You can see the following code is present in my template.php
<?php
$this->load->view("templates/header.php");
$this->load->view($main_body);
$this->load->view("templates/footer.php");
?>
and I Controller I write the following piece of code usually
public function load_page(){
$data['main_body'] = 'dashboard_pages/dashboard_view';
$this->load->view('template.php',$data);
}
You were pretty close to the solution: Load the header and the footer as they are, variables:
<?php
$this->load->view($header);
$this->load->view($main_body);
$this->load->view($footer);
?>
The tricky thing, is that you're always writing the method function load_page() in every controller you write, and it would be better having a MY_controller, a class previous to your controller class in which you'll write which footer you're referring:
Check for writing a MY_Controller here: http://ellislab.com/codeigniter/user-guide/general/core_classes.html
Then, write your MY_Controller:
class MY_Controller extends CI_Controller {
function __construct()
{
parent::__construct();
}
public function load_page( $page )
{
$data['main_body'] = $page;
// Logic for your header or footer deppending on logging or whatever...
if ( 1 ==1 ) {
$data['header'] = "templates/header.php";
$data['footer'] = "templates/footer.php";
}
$this->load->view('template.php',$data);
}
}
and you'll have to make sure your controllers extends MY_Controller class, and add a load_page method to whom you'll pass the argument:
class Custom_page extends MY_Controller {
function __construct()
{
parent::__construct();
}
function index()
{
$this->load_page( 'dashboard_pages/dashboard_view' );
}
}
I think with that you'll have exactly what you look for, that way you only have to write in one place the logic for the header and footer: In MY_Controller, and just use it in any part.

How to define a global variable(value) in codeIgniter

I simply do not mean how to define a global variable/constant in CodeIgniter.
Let me explain:
I have made a theme engine which is select-able from the current logged in user's control panel. This engine is not very complicated, but a simple folder. anyway, what I do across the application, is that I write one line of code to get the current theme selected by the user. I use a one line of code to get the name, and then store it in a variable:
$theme_name = $this->theme->get_theme_with_slash(false);
And then, I user $theme_name like this to get the proper view:
$this->load->view($theme_name.'result', $data);
And in all of my controllers that loads view I should repeat this process. What I need, is to call the function which gets the theme_name and store in the variable and then use the variable/session/function across the application. My approach currently is the helper's function which is a little less convenient compared to session/variable.
I got this from the manual and this what I have at the top of my config/config.php file: (i have a custom config set to paypal testing)
// HOW TO USE - For example if there's $config['foo'] = 'bar';
// in the config
// using $this- >config->item('foo') will be 'bar'.
// example for my paypal testing:
$config['paypaltest']=0;
http://ellislab.com/codeigniter%20/user-guide/libraries/config.html
and how to access in a controller:
$paypaltest = $this->config->item('paypaltest');
Create A core controller, since your process requires logical operations then you need a method for that.
application/core/MY_Controller.php
class MY_Controller Extends CI_Controller
{
protected $default_theme = 'theme';
public function __construct()
{
parent::__construct();
}
public function get_theme()
{
//your code for selecting the current theme selected from
//the database
$theme_from_db = '';
return $theme_from_db == NULL ? $this->default_theme : $theme_from_db;
}
}
Your Controller must extend MY_Controller
application/controller/view.php
class view extends MY_Controller
{
public function index()
{
$this->load->view($this->get_theme().'result', $data);
}
}
in code igniter global constants can be defined in
config->constants.php
even you no need to load it,it automatically autoloaded by CI automatically.
In Codeigniter all constant is defined inside application/config/constant.php.
like: define("CONSTANTNAME","value");
Constant degined here is accessible throughout all pages, ie; controllers, models and views

Best structure Codeigniter, constant top menu

Maybe a HMVC structure would have been best when I look back.
I load the following views in every controller.
$this->load->view('header');
$this->load->view('DEPENDING');
$this->load->view('header');
In my header-view I have a menu which I show Home | Inbox | Contact us and so on. Now I want to load how many new messages you have like this Home | Inbox (4) | Contact. If Im not wrong the 4 most be loaded thorugh a query every time. Which I then need to include a call to a model in EVERY controller. Like e.g.
$inbox['new_messages'] = $this->Call_the_model->get_new_messages(); // user id go through session
$this->load->view('header', $inbox);
$this->load->view('DEPENDING');
$this->load->view('header');
Am I right? Is there simple solution for me to use - even if Im not using HMVC?
One of the ideas is -
http://ellislab.com/codeigniter/user-guide/general/core_classes.html
class MY_Controller extends CI_Controller {
function __construct()
{
parent::__construct();
//load your model
$inbox_new_messages = $this->Call_the_model->get_new_messages();
//save in session
$this->session->set_userdata('sess_inbox_new_messages', $inbox_new_messages);
}
}
then just extend your controllers with new MY_Controllers and
class Welcome extends MY_Controller {
function __construct()
{
parent::__construct();
}
}
in your view files - check if that session variable is set and display the number.
Hope that helps.

CI Hacking the routes

So, i have some problem.
I just want to create some website where visitor can interact with my site if they're registered.
Let say they've provided their username,email,password, blah..blah..blah...
And then after they provided their blah..blah..blah.. it will autologin (if their data is passed) to my site.
After they logged in my site, they must provided more data again, like they uploaded their profile picture, how they control their privacy in my site, like step by step registration.
I don't want they interact with my site, until they complete their registration.
How do i make every page in my site looks like registration page until they finished their registration.
It's not like i will give this kind of function right.
if(is_login()){
if(is_registration_complete()){
//you're free to go
} else {
// complete your registration first
}
} else {
//you're not logged in
}
In my every controller, if you know what I mean :)
How do I create this function globaly?
If their registration isn't complete, they will go to registration controller, in every routes.
If they complete their registration, they will go to the, yeah you know the default routes.
I'm so sorry if my English is bad, English isn't my native language, sorry for grammar mistakes :)
The easiest is probably to create a library with your checking function and then to include it in the Constructor of the impacted ControllerS :
class Blog extends CI_Controller {
public function __construct()
{
parent::__construct();
// Load the lib here or Autoload
$this->load->library('mylogincheckhelper');
$this->mylogincheckhelper->is_complete();
}
}
And then you do all the ckecks and routing in the Lib.
create a view with your post-registering stuff and make them conditionally visible. and include the view in your templates.
One way you can do it is to create a custom controller by extend the core CI_Controller. Then you can have your page controllers extend from your custom controllers. By extending, you inherit the functions of the parent, as well as run the parent constructor (or run it if you override it), making them "globally available" to whoever extends it.
//extend the core controller
class MY_Controller extends CI_Controller {
//override to provide additional functionality
public function __construct(){
//run the core controller
parent::__construct();
//then do your login and registration checks here
//you can put code here, call another function or load a helper class
//or better, redirect them to your registration page
}
}
//your page's controller extending from your custom controller
class Page extends MY_Controller {
//not overriding the constructor will execute the parent constructor
//every page that extends your extended controller will inherit it's functions
//and execute it's constructor
}

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