Tag: Tutorial

Build a complete Create-Read-Update-Delete flow with routes, controller, model, and views.

Handle AJAX requests in CodeIgniter and return JSON for dynamic UI updates.

Build JSON REST endpoints with resource-style routes and clean response formats.

Protect API routes with tokens or API keys before controllers run.

Implement stateless JWT login for mobile/SPA clients consuming your CI4 API.

Add keyword search and filters using query parameters and Query Builder where clauses.

Upload files with CodeIgniter’s IncomingFile handling and move them to writable/uploads.

Restrict uploads to images and validate mime type, extension, and size.

Build SQL queries safely with CodeIgniter’s Query Builder instead of raw strings.

Perform core SQL operations with Query Builder: select, insert, update, and delete.