Web applications with Ryan and Reia

Ryan is a Reia/Erlang BEAM based web framework. It allows you to create web applications with clean and short code.

Ryan consists of: - router module - Retem (templating engine) - Behave (RSpec-like testing tool) - YAWS, Mochiweb and Inets HTTP server adapters - SQLite3, PostgreSQL, MySQL, CouchDB, Mnesia and Mongo database adapters

Prerequisites

Erlang/OTP R12B-3 or higher, Reia language, YAWS 1.77 or higher, Rake 0.8 or higher

Building

Run the following from Ryan source folder to build it: mkdir ebin && sudo rake install

That will install ryan libraries into Erlang lib folder and ryan executable file into /usr/local/bin

Running an example application

Run: cd application_example ryan

Surf to: http://localhost:8001/app

You can specify a port number to run on in command line: ryan -p 8080

Modify Fruits controller, implement or change actions Create your own controllers and see the results without the need to even reload web page. Enjoy!

Routing

Following REST idiom, Ryan provides the ability to parse any url and run the corresponding controller.

http://host:post/store/fruits/show/122 will be passed to 'store' application, 'fruits' controller, 'show' action (method), providing it with cookie data, http request method (~GET, ~PUT, ~POST, ~DELETE, ~UPDATE etc.), and parsed query data list.

Controllers

Controllers are Reia modules. They reside in application_name/controllers/ folder. By default each controller method is available to web application user unless otherwise defined in routing schema.

Views

Views can be Retem templates (retems) and are placed in application_name/views/ folder.

Models

Models are object definitions that can be stored, retrieved and queried from storage systems. SQLite3, PostgreSQL, MySQL, Mnesia and Mongo are to be supported.

Useful links

Behave@lighthouse Behave@github Ryan@lighthouse Ryan@github Reia language home Dev blog

Authors

• Philpipp Pirozhkov pirj@mail.ru