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Setting the Correct CodeIgniter Base URL for a Development and Production Environment
In CodeIgniter, setting the proper base URL is crucial for ensuring that URLs are generated correctly, especially when transitioning from a development to a production environment. This article addresses a common problem faced by developers where URLs generated in the production environment are truncated, leading to incorrect page redirects.
Problem Statement:
A developer encountered an issue where URLs generated in their CodeIgniter application were incorrect after migrating the application from a development environment to a production environment. Specifically, URLs that should have been in the format someurl.com/mysite/home/test were instead generated as someurl.com/home/test, missing the /mysite/ prefix.
Solution:
The key to resolving this problem lies in ensuring that the $config['base_url'] value in the CodeIgniter configuration file (application/config/config.php) is set correctly. In this case, the developer had set it as someurl.com/mysite. However, this value should be an absolute URL, including the protocol (e.g., HTTP or HTTPS), as follows:
$config['base_url'] = "http://somesite.com/somedir/";
By specifying an absolute URL, CodeIgniter can generate complete URLs that include the base URL and any additional segments. When using the URL helper to generate URLs, base_url() will output the specified absolute URL.
Additional Notes:
For example:
By following these guidelines, developers can ensure that their CodeIgniter applications generate correct URLs, regardless of the environment in which they are hosted.
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