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== Camping, a Microframework Camping is a web framework which consistently stays at less than 4kb of code. You can probably view the complete source code on a single page. But, you know, it's so small that, if you think about it, what can it really do? The idea here is to store a complete fledgling web application in a single file like many small CGIs. But to organize it as a Model-View-Controller application like Rails does. You can then easily move it to Rails once you've got it going. == A Camping Skeleton A skeletal Camping blog could look like this: require 'camping' Camping.goes :Blog module Blog::Models class Post < Base; belongs_to :user; end class Comment < Base; belongs_to :user; end class User < Base; end end module Blog::Controllers class Index < R '/' def get @posts = Post.find :all render :index end end end module Blog::Views def layout html do body do self << yield end end end def index for post in @posts h1 post.title end end end Some things you might have noticed: * Camping::Models uses ActiveRecord to do its work. We love ActiveRecord! * Camping::Controllers can be assigned URLs in the class definition. Neat? * Camping::Views describes HTML using pure Ruby. Markup as Ruby, which we call Markaby. * You use Camping::goes to make a copy of the Camping framework under your own module name (in this case: <tt>Blog</tt>.) <b>NOTE:</b> Camping auto-prefixes table names. If your class is named <tt>Blog::Models::Post</tt>, your table will be called <b>blog_posts</b>. Since many Camping apps can be attached to a database at once, this helps prevent name clash. (If you want to see the full blog example, check out <tt>examples/blog/blog.rb</tt> for the complete code.) If you want to write larger applications with Camping, you are encouraged to split the application into distinct parts which can be mounted at URLs on your web server. You might have a blog at /blog and a wiki at /wiki. Each self-contained. But you can certainly share layouts and models by storing them in plain Ruby scripts. Interested yet? Okay, okay, one step at a time. == Installation * <tt>gem install camping</tt> Or for the bleeding edge: * <tt>gem install camping --source http://code.whytheluckystiff.net</tt> You are encourage to install Camping and SQLite3, since it is a small database which fits perfectly with our compact bylaws, works well with the examples. * See http://code.whytheluckystiff.net/camping/wiki/BeAlertWhenOnSqlite3 for instructions. == Running Camping Apps The blog example above and most Camping applications look a lot like CGI scripts. If you run them from the commandline, you'll probably just see a pile of HTML. Camping comes with an tool for launching apps from the commandline: * Run: <tt>camping blog.rb</tt> * Visit http://localhost:3301/ to use the app. == How the Camping Tool Works If your application isn't working with the <tt>camping</tt> tool, keep in mind that the tool expects the following conventions to be used: 1. You must have SQLite3 and SQLite3-ruby installed. (Once again, please see http://code.whytheluckystiff.net/camping/wiki/BeAlertWhenOnSqlite3 for instructions.) 2. If your script is called <tt>test.rb</tt>, Camping expects your application to be stored in a module called <tt>Test</tt>. Case is not imporant, though. The module can be called <tt>TeSt</tt> or any other permutation. 3. Your script's postamble (anything enclosed in <tt>if __FILE__ == $0</tt>) will be ignored by the tool, since the tool will create an SQLite3 database at <tt>~/.camping.db</tt>. Or, on Windows, <tt>$USER/Application Data/Camping.db</tt>. 4. If your application's module has a <tt>create</tt> method, it will be executed before the web server starts up. == The Rules of Thumb Once you've started writing your own Camping app, I'd highly recommend that you become familiar with the Camping Rules of Thumb which are listed on the wiki: http://code.whytheluckystiff.net/camping/wiki/CampingRulesOfThumb