How to access Wordpress admin panel after integration with Codeigniter? - wordpress

Question

In the company where I work we used to have Wordpress on its own subdomain, like blog.ourwebsite.com. We decided that it would've been better to have it in the main domain, like: ourwebsite.com/blog. Also, we want it perfectly integrate with our current design, so the blog should load inside the website showing just the posts, while the header and the footer will be the one of our website. Our website is built with Codeigniter.
I've read different articles and questions about how to integrate the two platforms and in the end we opted for putting Wordpress inside the root directory of the Codeigniter installation, so that it looks like this:
ourwebsite/
application/
system/
wordpress_blog/
In the Codeigniter index.php I am loading Wordpress with this instruction:
require_once './wpblog/wp-blog-header.php';
I put it on top, so before loading the codeigniter core. At this point the only problem was the site_url function conflict which I solved by renaming it in Codeigniter. So, everything seems to work fine except that I have no idea how to access the Wordpress administration panel.
I then created a blog controller and I can now call Wordpress functions inside the Codeigniter view. So at this point the Wordpress content is displayed correctly. The problem is that I have no idea how to access the Wordpress admin panel. If I try to access localhost/ourwebsite/en/blog/wp-admin I, of course, get an error, because it's trying to access a wp-admin function inside the controller, which doesn't exist. So I was thinking to access directly the directory with something like localhost/ourwebsite/wordpress_blog/wp-admin (wordpress_blog is the name of the directory on disk, which is different from the controller name), but I get a 404 error. I also added this directory to the Codeigniter .htaccess file that now looks like this:
RewriteEngine on
RewriteBase /ourwebsite/
RewriteCond $1 !^(index\.php|wordpress_blog|cache|captcha|fonts|forum|media|img|min|css|js|scripts|images|uploads|docs|robots.txt|sitemap.xml|sitemap|public|tools|assets|xd_receiver.htm)
RewriteRule ^(.*)$ index.php/$1 [L]
Any idea?
EDIT:
I tried accessing directly the wp-login.php file, at http://localhost/~carlo/ourwebsite/wordpress_blog/wp-login.php. This actually works. The thing is that when I try to login it redirects me to a wrong url, which is: http://localhost/~carlo/ourwebsite/wordpress_blog/wp-admin/localhost/~carlo/ourwebsite/wordpress_blog/wp-login.php?redirect_to=http%3A%2F%2Flocalhost%2F~carlo%2Fourwebsite%2Fwpblog%2Fwp-admin%2F&reauth=1.
The thing is that it logged me in anyway, so if I try to access the admin panel again, now, it kind of works. I can see it but it's like it has no css or javascript files loaded.

Answer 1

ok then try to change the wordpress siteurl in option table. it should be like localhost/ourwebsite/wordpress_blog/..
and check your
localhost/ourwebsite/wordpress_blog/wp-admin
edited 2/11/2014
define('WP_HOME','http://localhost/~carlo/ourwebsite/wordpress_blog/');
define('WP_SITEURL','http://localhost/~carlo/ourwebsite/wordpress_blog/');
you are missing "http://"