An innovative online learning platform designed to provide a seamless and engaging educational experience. It offers a wide range of courses and resources to help users acquire new skills and knowledge at their own pace.
LearnOsphere is a robust full-stack online course platform enabling instructors to create and manage courses, and students to enroll and learn. The platform features a comprehensive 'Add New Course' form that allows instructors to define course titles, descriptions, durations, thumbnails, and assign them to categories like Web Development, Data Science, Marketing, Graphic Design, or Business. Courses can be set as free or have a regular and discount price, supporting multiple currencies such as USD, EUR, GBP, and JPY. Users can enroll in courses, with a unique limit of three active enrollments at a time. The platform also includes a dedicated blog section where content can be created using a rich text editor. Security is handled via JWT for API calls, and users can manage their enrolled courses, including the option to un-enroll.
The problems this build had to solve, in the order they were tackled.
Entry 01
The challenge
Implementing a strict "three-enrollment limit" required precise backend validation and frontend state synchronization to ensure users couldn't bypass restrictions.
The solution
Developed custom backend middleware to verify JWTs and enforce business logic, such as checking enrollment counts before allowing a student to join a new course.
Entry 02
The challenge
Integrating JWT (JSON Web Tokens) for API security presented a challenge in managing token expiration, storage, and ensuring secure communication between the client and server.
The solution
Utilized strict database schemas to handle the "Add New Course" form, ensuring that titles, thumbnails, and multi-currency prices were validated before being injected into the database.
Entry 03
The challenge
Managing a multi-currency system (USD, EUR, GBP, JPY) and a rich text editor for the blog section added layers of complexity in how data was parsed, stored, and displayed consistently.
The solution
Researched and integrated a reliable rich text editor library, then sanitized the output to allow instructors to create professional blog content safely.
Learning outcomes
Advanced Authentication Protocols: Gained hands-on expertise in Stateless Authentication using JWTs, moving beyond basic login systems to industry-standard API security.
Business Logic Design: Learned how to translate real-world constraints (like enrollment limits) into scalable code through backend guard clauses and frontend validation.
CRUD for Educational Platforms: Mastered the creation of complex forms that handle mixed media (thumbnails) and varied data types (currencies/categories).
Content Management Systems (CMS): Developed a deeper understanding of content creation workflows by building a functional blog within a larger application ecosystem.