CodeIgniter Load controller within controller

Question

I have a home controller with an index action that displays a set of featured products  However  the products are managed through a product controller including a proprietary model and views   How do I access product information from within the index action in the home controller  Instancing product won t work as the class isn t loaded at runtime and CodeIgniter doesn t provide a way to dynamically load controllers  Putting the product class into a library file doesn t really work  either   To be precise  I need the product views  filled with data processed by the product controller  inserted in the index view  I m running CodeIgniter 2 0 2

User · Answer

According to this blog post you can load controller within another controller in codeigniter.

http://www.techsirius.com/2013/01/load-controller-within-another.html

First of all you need to extend CI_Loader

<?php

class MY_Loader extends CI_Loader {

    public function __construct() {
        parent::__construct();
    }

    public function controller($file_name) {
        $CI = & get_instance();
        $file_path = APPPATH.'controllers/' . $file_name . '.php';
        $object_name = $file_name;
        $class_name = ucfirst($file_name);

        if (file_exists($file_path)) {
            require $file_path;

            $CI->$object_name = new $class_name();
        }
        else {
            show_error('Unable to load the requested controller class: ' . $class_name);
        }
    }
}

then load controller within another controller.

User · Answer

If you re interested  there s a well-established package out there that you can add to your Codeigniter project that will handle this   https   bitbucket org wiredesignz codeigniter-modular-extensions-hmvc      Modular Extensions makes the CodeIgniter PHP framework modular  Modules are groups of independent components  typically model  controller and view  arranged in an application modules sub-directory  that can be dropped into other CodeIgniter applications    OK  so the big change is that now you d be using a modular structure - but to me this is desirable  I have used CI for about 3 years now  and can t imagine life without Modular Extensions   Now  here s the part that deals with directly calling controllers for rendering view partials      Using a Module as a view partial from within a view is as easy as writing   lt  php echo modules  run  module controller method    param1   params2     gt    That s all there is to it  I typically use this for loading little  widgets  like    Event calendars List of latest news articles Newsletter signup forms Polls   Typically I build a  widget  controller for each module and use it only for this purpose   Your question was also one of my first questions when I started with Codeigniter  I hope this helps you out  even though it may be a bit more than you were looking for  I ve been using MX ever since and haven t looked back   Make sure to read the docs and check out the multitude of information regarding this package on the Codeigniter forums  Enjoy

User · Answer

Just to add more information to what Zain Abbas said   Load the controller that way  and use it like he said    this- gt load- gt library     controllers instructor      this- gt instructor- gt functioname      Or you can create an object and use it this way    this- gt load- gt library     controllers your controller      obj   new  this- gt your controller      obj- gt your function      Hope this can help

User · Answer

Load it like this   this- gt load- gt library     controllers instructor      and call the following method    this- gt instructor- gt functioname     This works for CodeIgniter 2 x

User · Answer

Based on  Joaquin Astelarra response  I have managed to write this little helper named load controller helper php    lt  php  if     defined  BASEPATH    exit  No direct script access allowed     if   function exists  load controller          function load controller  controller   method    index                 require once FCPATH   APPPATH    controllers      controller     php              controller   new  controller             return  controller- gt  method              You can use call it like this    this- gt load- gt helper  load controller    load controller  homepage    not found      Note  The second argument is not mandatory  as it will run the method named index  like CodeIgniter would   Now you will be able to load a controller inside another controller without using HMVC   Later Edit  Be aware that this method might have unexpected results  Always test it

User · Answer

In this cases you can try some old school php      insert at the beggining of home php controller require once dirname   FILE      product php       the controller route   Then  you ll have something like   Class Home extends CI Controller    public function   construct        parent    construct       this- gt product   new Product                       usage example  public function addProduct  data        this- gt product- gt add  data          And then just use the controller s methods as you like

User · Answer

I know this is old  but should anyone find it more recently  I would suggest creating a separate class file in the controllers folder  Pass in the existing controller object into the class constructor and then you can access the functions from anywhere and it doesn t conflict with CI s setup and handling

User · Answer

There are plenty of good answers given here for loading controllers within controllers  but for me  this contradicts the mvc pattern   The sentence that worries me is       filled with data processed by the product controller     The models are there for processing and returning data  If you put this logic into your product model then you can call it from any controller you like without having to try to pervert the framework   Once of the most helpful quotes I read was that the controller was like the  traffic cop   there to route requests and responses between models and views

User · Answer

Just use                  self  index

User · Answer

With the following code you can load the controller classes and execute the methods   This code was written for codeigniter 2 1  First add a new file MY Loader php in your application core directory  Add the following code to your newly created MY Loader php file    lt  php  if     defined  BASEPATH    exit  No direct script access allowed        written by AJ  sirderno yahoo com  class MY Loader extends CI Loader        protected   my controller paths       array           protected   my controllers            array          public function   construct                 parent    construct              this- gt  my controller paths   array APPPATH              public function controller  controller   name        db conn   FALSE                if  is array  controller                         foreach   controller as  babe                                 this- gt controller  babe                             return                     if   controller                              return                      path                   Is the controller in a sub-folder  If so  parse out the filename and path          if    last slash   strrpos  controller            FALSE                           The path is in front of the last slash              path   substr  controller  0   last slash   1                   And the controller name behind it              controller   substr  controller   last slash   1                      if   name                               name    controller                     if  in array  name   this- gt  my controllers  TRUE                         return                      CI   amp  get instance            if  isset  CI- gt  name                         show error  The controller name you are loading is the name of a resource that is already being used     name                       controller   strtolower  controller            foreach   this- gt  my controller paths as  mod path                        if     file exists  mod path  controllers    path  controller   php                                  continue                             if   db conn     FALSE AND   class exists  CI DB                                  if   db conn     TRUE                                         db conn                                           CI- gt load- gt database  db conn  FALSE  TRUE                              if     class exists  CI Controller                                  load class  Controller    core                               require once  mod path  controllers    path  controller   php                  controller   ucfirst  controller                 CI- gt  name   new  controller                  this- gt  my controllers      name              return                        couldn t find the controller         show error  Unable to locate the controller you have specified     controller              Now you can load all the controllers in your application controllers directory  for example   load the controller class Invoice and execute the function test     this- gt load- gt controller  invoice   invoice controller      this- gt invoice controller- gt test      or when the class is within a dir   this- gt load- gt controller   dir invoice   invoice controller      this- gt invoice controller- gt test      It just works the same like loading a model

[php] CodeIgniter: Load controller within controller

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