gistfile1.rb

#model/article.rb
class Article
  include DataMapper::Resource
    property :id, Integer, :serial => true
    property :title, String, :nullable => false
    property :body, Text
    property :created_at, DateTime
    property :updated_at, DateTime
    default_scope(:default).update(:order => [:created_at.desc])    
#  DataMapper.auto_upgrade!
end

DataMapper.auto_migrate!

#controller/article.rb
# CREATE
get '/admin/articles/new' do
  protected!
  if session[:error]=='' then
		@error=''
	else
		@error='Sorry.'
		session[:error]=''
	end	
	erb :'admin/articles/new', :layout => :'admin/layout'
end 

post '/admin/articles/new' do
  protected!
  @article = Article.new
  @article.attributes = {:title=>params['title'], :body=>params['body'], :created_at=>Time.now}
  
  if @article.save then
	  redirect '/admin/articles'
  else
    session[:error] = 'Something wrong'
  	redirect '/admin/article/new'
  end
end

# READ 
get '/admin/articles' do
  protected!
  @articles = Article.all
  erb :'/admin/articles', :layout => :'admin/layout' 
end

get '/articles' do
  @articles = Article.all
  erb :'/articles', :layout => :'layout' 
end

# UPDATE
get '/admin/articles/edit/:id' do
	protected!
	@article = Article.get(params[:id])
	erb :'admin/articles/edit', :layout => :'admin/layout'

end

post '/admin/articles/edit/:id' do
  @error=''
  protected!
  @article = Article.get(params[:id])
  if @article.update(:title=>params['title'], :body=>params['body'], :updated_at=>Time.now) then
    session[:success] = 'Oh yeah baby! IZMENENIA SOHRANENY'
	  redirect '/admin/articles'
  else
  	session[:error] = 'SORRY.'
  	redirect ('/admin/articles/edit/'+params[:id])
  end
end

# DELETE
get '/admin/articles/delete/:id' do
  protected!
  'deleeeeteeee #{params[:id]}'
  @article = Article.get(params[:id])
  @article.destroy
  session[:success] = 'Article deleted.'
  redirect '/admin/articles'
  
end