LeftParen

LeftParen lets you make web apps quickly.

LeftParen 0.61 is a PLT Scheme web app framework. LP is in its early stages, and I need your help to improve it. Please contact support@leftparen.com 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.

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News

Dec 1st 2008

LeftParen 0.4 is now available

Update: This release appears not to be compatible with PLT Scheme 4.1.3. In the meantime, try 4.1.2. See this PLT listserv post for more info.

This release adds RSS/Atom support (thanks zitterbewegung), and has improved image upload functionality (thanks hager). We’ve also expanded the documentation, including adding writeups on these two new features. Of course, this release also fixes a number of bugs.

Features

Automatic creation of the basic directory structure of your project
A "Hello, World" with zero lines of code
Simple data persistance storage through the "record" abstraction
No databases or schemas
Session and cookie support
User accounts and authentication out-of-the-box
Easy form creation
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.