LeftParen 1.2

LeftParen lets you make web apps quickly.

LeftParen is a PLT Scheme web app framework. LP is in its very early stages, and I need your help to improve it. Please contact Rob Hunter with any questions, suggestions, or ideas. The documentation is pretty limited at this point, so please don't hesitate to email me with even the silliest of questions.

• Documentation
• Tutorials
• Contact

News

April 16, 2008Version 1.2 is out. Cookie expirations are no longer hard-coded to a particular date and I use the new hash table functions (hash-ref, hash-set!, make-hash, etc). This means that LP now requires PLT Scheme v3.99.0.23 or greater.

April 2, 2008I released version 1.1 of LeftParen to PLaneT. This release fixed a problem with some hard-coded directories. (Thanks to Jens Soegaard for the catch!) I've also made it so that scripts always run relative to the project root. This allows for more portable projects. I've updated the documentation to reflect these changes.

Features

• Automatic creation of the basic directory structure of your project
• A "Hello, World" with zero lines of code
• Simple data persistance storage through "record" abstraction
• No databases or schemas
• Session and cookie support
• User account and authentication
• Simple URL mappings (like Rails' routes)

Acknowledgements

LeftParen was written by Rob Hunter but it builds heavily on (and, in fact, often directly incorporates) the work of Untyped (instaservlet and dispatch), Jens Axel Soegaard (web.plt), and, of course, PLT Scheme.