CODEWITHSUNDEEP
phpjavascriptajaxcodeigniter
user1537360
user1537360

Reputation: 4811

Some questions about CodeIgniter with Javascript and AJAX

Just getting into Codeigniter and I'm planning out a large application. I'm a bit confused about how CI handles JS files and AJAX requests.

I am using mod_rewrite with my project.

  1. In a regular webpage, I'd reference separate JS scripts at the header of my doc to keep my code segregated and clean. Since I'm using mod_rewrite, I need functions from the url helper to find my files. This is a problem in separate js docs because they don't execute php. So when it comes to AJAX calls, how am I supposed to reference a PHP controller function from my JS file when I don't have use of the site_url() function?

  2. How would I go about writing functions that can be accessed through AJAX but not through the address bar? So, let's say I have a User Controller. You can go to user/pictures and you can see their pictures. You go to user/friends and you can see their friends. But I don't want you to be able to go to User/getData and see all the printed out raw data.

tl;dr What is standard JS and AJAX practice when using separate docs and mod_rewrite?

Cheers guys.

Upvotes: 0

Views: 75

Answers (2)

Pattle
Pattle

Reputation: 6016

I also declare a js variable in the <head> like

var baseUrl = '<?php print(base_url()); ?>';

Then when you do your AJAX call you can call the controller like

baseUrl + 'controller/method'

In terms of making sure that methods can only be called from AJAX calls and not through the address bar one option is to send a post value and check for this before you do anything like 

if($this->input->post('ajax_call'))
{
     //Do something
}

If you put all your ajax methods into the same controller you'd only have to have this check once in the __construct()

Upvotes: 1

Nil&#39;z
Nil&#39;z

Reputation: 7475

What I personally do is declare a js variable in the header section of my template before any js declaration like this:

var base_url = <?=base_url()?>

This base_url will then be accessible by any js file you integrate. About the second point you can always redirect the user from your controller like this:

public function some_function(){
    if($this->input->post(null)){
        //your ajax code here
    }else{
        redirect(base_url(), 'refresh')
    }
}

Upvotes: 1

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