sinatra_mongomapper_crud.rb

require "rubygems"
require "mongomapper"
require "sinatra"

MongoMapper.database = "dbname"

class Example
  
  include MongoMapper::Document
  
  key :name,  String
  timestamps!
  
  has_many :join
  has_many :another_class, :through => :join
  
end



get '/' do
  erb :index
end

get '/new' do
  erb :new
end

post '/create' do
  @example = example.new(params[:example])
  if @example.save
    redirect  "/show/#{@example.id}"
  else
    redirect('/list')
  end
end

get '/show/:id' do
  @example = example.find(params[:id])
  if @example
    erb :show
  else
    redirect('/list')
  end
end

get '/list' do
  @examples = example.all(:order => "name")
  erb :list
end

get '/edit/:id' do
  @example = example.find(params[:id])
  erb :edit
end

post '/update/:id' do
  @example = example.find(params[:id])
  if @example.update_attributes(params[:example])
    redirect  "/show/#{@example.id}"
  else
    redirect('/list')
  end
end

get '/delete/:id' do
  example = example.find(params[:id])
  example.destroy unless example.nil?
  redirect('/list')
end