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98 lines
1.9 KiB
Markdown
98 lines
1.9 KiB
Markdown
<img src="https://avatars3.githubusercontent.com/u/15321198?v=3&s=200" width="100" height="100" />
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# Kemal
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Lightning Fast, Super Simple web framework for [Crystal](http://www.crystal-lang.org).
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Inspired by [Sinatra](http://www.sinatrarb.com/)
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Kemal is under heavy development and currently supports Crystal 0.9.0.
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# Super Simple <3
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```ruby
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require "kemal"
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get "/" do
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"Hello World!"
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end
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```
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Build and run!
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```
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crystal build --release src/kemal_sample.cr
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./kemal_sample
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```
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Go to *http://localhost:3000*
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Check [samples](https://github.com/kemalcr/kemal/tree/master/samples) for more.
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# Installation
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Add it to your ```shard.yml```
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```yml
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dependencies:
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kemal:
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github: kemalcr/kemal
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branch: master
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```
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## Routes
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In Kemal, a route is an HTTP method paired with a URL-matching pattern. Each route is associated with a block:
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```ruby
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get '/' do
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.. show something ..
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end
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post '/' do
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.. create something ..
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end
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put '/' do
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.. replace something ..
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end
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patch '/' do
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.. modify something ..
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end
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delete '/' do
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.. annihilate something ..
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end
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```
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## Context
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Accessing the request context (query params, body, headers e.g) is super easy. You can use the context returned from the block:
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```ruby
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# Matches /hello/kemal
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get '/hello/:name' do |ctx|
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name = ctx.params["name"]
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"Hello back to #{name}"
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end
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# Matches /resize?width=200&height=200
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get '/resize' do |ctx|
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width = ctx.params["width"]
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height = ctx.params["height"]
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end
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```
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## Content Type
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Kemal uses *text/html* as the default content type. You can change it via the context.
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```ruby
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# Set the content as application/json and return JSON
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get '/user.json' do |ctx|
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kemal = {name: 'Kemal', language: 'Crystal'}
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ctx.set_content_type "application/json"
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kemal.to_json
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end
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```
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## Thanks
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Thanks to Manas for their awesome work on [Frank](https://github.com/manastech/frank).
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