dm-ambition
DataMapper::Ambition is a plugin that provides an Ambition-like API for accessing DataMapper models.
Installation
With Rubygems:
$ gem install dm-ambition
$ irb -rubygems
>> require 'dm-ambition'
=> trueWith git and local working copy:
$ git clone git://github.com/dkubb/dm-ambition.git
$ cd dm-ambition
$ rake install
$ irb -rubygems
>> require 'dm-ambition'
=> trueTesting
The simplest way to test is with Bundler since it handles all dependencies:
$ rake local_gemfile
$ BUNDLE_GEMFILE="Gemfile.local" sh -c "bundle && bundle exec rake spec"Examples
The standard Enumerable methods #select, #detect, #reject, #find_all, and
#find may be used with dm-ambition. These methods may be called on Model
and Collection objects.
# with == operator
model_or_collection.select { |u| u.name == 'Dan Kubb' }
# with =~ operator
model_or_collection.select { |u| u.name =~ /Dan Kubb/ }
# with > operator
model_or_collection.select { |u| u.id > 1 }
# with >= operator
model_or_collection.select { |u| u.id >= 1 }
# with < operator
model_or_collection.select { |u| u.id < 1 }
# with <= operator
model_or_collection.select { |u| u.id <= 1 }
# with < operator
model_or_collection.select { |u| u.id < 1 }
# with receiver.attribute.nil?
model_or_collection.select { |u| u.id.nil? }
# with nil bind value
model_or_collection.select { |u| u.id == nil }
# with true bind value
model_or_collection.select { |u| u.admin == true }
# with false bind value
model_or_collection.select { |u| u.admin == false }
# with AND conditions
model_or_collection.select { |u| u.id == 1 && u.name == 'Dan Kubb' }
# with negated conditions
model_or_collection.select { |u| !(u.id == 1) }
# with double-negated conditions
model_or_collection.select { |u| !(!(u.id == 1)) }
# with matching from receiver
model_or_collection.select { |u| u == user }
# with matching to receiver
model_or_collection.select { |u| user == u }
# using send on receiver
model_or_collection.select { |u| u.send(:name) == 'Dan Kubb' }
# with Array#include?
model_or_collection.select { |u| user_ids.include?(u.id) }
# with Range#include?
model_or_collection.select { |u| (1..10).include?(u.id) }
# with Hash#key?
model_or_collection.select { |u| { 1 => 'Dan Kubb' }.key?(u.id) }
# with Hash#value?
model_or_collection.select { |u| { 'Dan Kubb' => 1 }.value?(u.id) }
# with receiver and Array#include?
model_or_collection.select { |u| users.include?(u) }
# with receiver and Hash#key?
model_or_collection.select { |u| { user => 'Dan Kubb' }.key?(u) }
# with receiver and Hash#value?
model_or_collection.select { |u| { 'Dan Kubb' => user }.value?(u) }Copyright
Copyright © 2009-2011 Dan Kubb. See LICENSE for details.