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Jul 07

Loading library/model classes from your views in CodeIgniter


When I was new to CodeIgniter, I need some data manipulation using a library function in my view classes, I simply loaded the library and called the library function, as I always do….



but when run this code, I surprised by the error:

Before this I had used library functions many times in the code, and it always works fine, and after checking the code thoroughly I didn’t find any mistake in the code.

So, what happened with that code?

then I realize that I always use the library functions in the Controllers, this is the first time I’m using it in the views.

then I found the problem! You can do almost everything in the view, even when you shouldn’t, but loading library, models etc. has to be done in the controller. After searching and reading many articles on the net I found a solution to use library functions anywhere in the application with the help of get_instance() method.

get_instance() method returns the CodeIgniter super object. this is used to access CodeIgniter native resources from within your custom classes. Normally, to call the codeigniter’s member function we use $this object i.e. $this->load->library(‘some_library_name’); or $this->load->helper(‘some_helper_name’);

but if you want to use your these functions from views, or any other custom class you have to use &get_instance() method to get the codeigniter’s object.

$ci_obj = & get_instance();

or you can use the given helper function to load library from anywhere in the code:

function load_library($library_name) {

$ci = & get_instance();
return $ci->$library_name;


it will return the library object and you can call any library function using that object in anywhere in the views or any other custom class.



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