snusnu

class MyModel
  
  include DataMapper::Resource
  
  # adds self.validate_constraint
  # validation will be performed in specified before callbacks
  include DataMapper::Validations::Constraints
  
  # validate an existing constraint (expects class MyConstraint to be loaded)
  validate_constraint :my_constraint,

snusnu

class Object

  def full_const_defined?(name)
    !!full_const_get(name) rescue false
  end
  
end

snusnu

# Trip obviously being a DataMapper::Resource here ...

irb(main):001:0> Trip.all :conditions => {}
ArgumentError: +options[:conditions]+ cannot be empty
        from /Users/snusnu/projects/surf/gems/gems/dm-core-0.9.7/lib/dm-core/query.rb:226:in `assert_valid_options'
        from /Users/snusnu/projects/surf/gems/gems/dm-core-0.9.7/lib/dm-core/query.rb:163:in `initialize'
        from /Users/snusnu/projects/surf/gems/gems/dm-core-0.9.7/lib/dm-core/model.rb:394:in `new'
        from /Users/snusnu/projects/surf/gems/gems/dm-core-0.9.7/lib/dm-core/model.rb:394:in `scoped_query'
        from /Users/snusnu/projects/surf/gems/gems/dm-core-0.9.7/lib/dm-core/model.rb:252:in `all'
        from (irb):1

snusnu

mungo:~/projects/trippings snusnu$ irb
irb(main):001:0> require "rubygems"; require "randexp"
=> true
irb(main):002:0> /\w{10}/.gen
=> "flattering"
irb(main):003:0> /\w{20}/.gen
=> "hypsidolichocephalic"
irb(main):004:0> /\w{30}/.gen
NoMethodError: undefined method `pick' for nil:NilClass
        from /usr/local/lib/ruby/gems/1.8/gems/randexp-0.1.4/lib/randexp/randgen.rb:35:in `word'

snusnu

module Foo
  def foo
    :foo
  end
end

class Session
  def user
    @user ||= real_user_object 
    class << @user

snusnu

# config/router.rb
Merb::Router.prepare do
  
  resources :articles do
    resources :comments do
      resources :ratings, :controller => "Community::Ratings"
    end
    resource :editor
  end
  

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class Articles < Application

  controlling :articles do |a|

    a.action :new,  :only_provides => :html
    a.action :edit, :only_provides => :html

    a.action :create, :provides => [ :xml, :json, :yml ] do
      a.on_success { display member, :status => 201, :location => resource(member) }
      a.on_failure { display member.errors, :status => 422 }

snusnu

require 'rexml/document'

begin
  gem('fastercsv')
  require 'faster_csv'
rescue LoadError
  nil
end

begin

snusnu

#!/usr/bin/env ruby  
  
require 'rubygems'  
  
gem 'dm-core', '=0.9.10'  
require 'dm-core'  
 
# uncomment for logging output
 
#DataMapper::Logger.new(STDOUT, :debug)

snusnu

#!/usr/bin/env ruby  
  
require 'rubygems'  
  
gem 'dm-core', '=0.9.10'
require 'dm-core'

DataMapper::Logger.new(STDOUT, :debug)
DataMapper.setup(:default, 'sqlite3:memory:')