Codeigniter 3 - how to remove the function name from URL - php

Question

My URL is:
example.com/controller/function/parameter
=> example.com/category/index/category_name
I need:
example.com/category/category_name
I have tried several solutions provided by Stackoverflow questions asked on this, but it´s not working. Either it redirects to home or a 404 page not found.
The options I have tried are:
$route['category'] = "category/index"; //1
$route['category/(:any)'] = "category/index"; //2
$route['category/(:any)'] = "category/index/$1"; //3
Another route is:
$route['default_controller'] = 'home';
The htaccess file:
RewriteEngine On
RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d
RewriteCond $1 !^(index\.php|images|robots\.txt|css)
RewriteRule ^(.*)$ index.php/$1 [L]
In config file I have:
$config['url_suffix'] = '';

Answer 1

I am not sure why you couldn't get it to work.
Here is some test code I created to check this out...
This is using CI 3.1.5.
.htaccess - same as what you have...
Controller - Category.php
<?php
defined('BASEPATH') OR exit('No direct script access allowed');
class Category extends CI_Controller {
public function __construct() {
parent::__construct();
}
public function index($category_name = 'None Selected') {
echo "The Category name is " . $category_name;
}
}
routes.php
$route['category/(:any)'] = "category/index/$1"; //3 - this works
$route['default_controller'] = 'welcome';
$route['404_override'] = '';
$route['translate_uri_dashes'] = FALSE;
Test URLS
/category/ output: The Category name is None Selected
/category/fluffy-bunnies output: The Category name is fluffy-bunnies
Have a play with that and see if you can find the issue.

Answer 2

I think you have error in your .htaccess file. Please find below code for .htaccess file.
You can use RewriteBase to provide a base for your rewrites.
RewriteEngine On
RewriteBase /campnew/
RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d
RewriteCond $1 !^(index\.php|images|robots\.txt|css)
RewriteRule ^(.*)$ index.php/$1 [L]
In Controller your method.
public function index($category_name = null) {
$this->load->model('category_model');
$data = array();
if ($query = $this->category_model->get_records_view($category_name)) {
$data['recordss'] = $query;
}
if ($query2 = $this->category_model->get_records_view2($category_name))
{
$data['recordsc2'] = $query2;
}
$data['main_content'] = 'category';
$this->load->view('includes/template', $data);
}
In Model File
public function get_records_view($category){
$this->db->where('a.linkname', $category);
}
Let me know if it not works.