Need Help Integrating Bootstrap Frontend with CodeIgniter Backend

Hi everyone,

I need some help with a project I’m working on.

I have been given a complete frontend built using Bootstrap (HTML, CSS, JS). Now, I need to integrate it with a CodeIgniter backend (either CI 3 or CI 4, whichever works best).

Here’s my current situation:
The frontend is fully designed and working as static files.

My task is to build the backend using CodeIgniter.

I need to make the frontend dynamic – connect forms, display data from the database, handle form submissions, etc.

What I’m confused about:
How do I move the static HTML frontend into CodeIgniter’s views properly?

How do I connect frontend forms with CodeIgniter controllers and models?

Are there any beginner-friendly examples or guides that show how to integrate a ready-made frontend into a CodeIgniter project?

If anyone has worked on a similar integration before, I’d really appreciate your guidance or a step-by-step overview.

Thanks in advance!