62 lines
1.9 KiB
Markdown
62 lines
1.9 KiB
Markdown
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# Yesod Web Framework
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An advanced web framework using the Haskell programming language. Featuring:
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* safety & security guaranteed at compile time
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* developer productivity: tools for all your basic web development needs
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* raw performance
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* fast, compiled code
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* techniques for constant-space memory consumption
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* asynchronous IO
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* this is built in to the Haskell programming language (like Erlang)
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## Getting Started
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Learn more about Yesod on [its main website](http://www.yesodweb.com/). If you
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want to get started using Yesod, we strongly recommend the [quick start
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guide](http://www.yesodweb.com/page/quickstart), based on [the Haskell build
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tool stack](https://github.com/commercialhaskell/stack#readme).
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Here's a minimal example!
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```haskell
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{-# LANGUAGE OverloadedStrings, QuasiQuotes, TemplateHaskell, TypeFamilies #-}
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import Yesod
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data App = App -- Put your config, database connection pool, etc. in here.
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-- Derive routes and instances for App.
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mkYesod "App" [parseRoutes|
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/ HomeR GET
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|]
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instance Yesod App -- Methods in here can be overridden as needed.
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-- The handler for the GET request at /, corresponds to HomeR.
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getHomeR :: Handler Html
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getHomeR = defaultLayout [whamlet|Hello World!|]
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main :: IO ()
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main = warp 3000 App
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```
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To read about each of the concepts in use above (routing, handlers,
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linking, JSON), in detail, visit
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[Basics in the Yesod book](https://www.yesodweb.com/book/basics#basics_routing).
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## Hacking on Yesod
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Yesod consists mostly of four repositories:
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```bash
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git clone --recurse-submodules http://github.com/yesodweb/shakespeare
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git clone --recurse-submodules http://github.com/yesodweb/persistent
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git clone --recurse-submodules http://github.com/yesodweb/wai
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git clone --recurse-submodules http://github.com/yesodweb/yesod
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```
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Each repository can be built with `stack build`.
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