Hashie
Hashie is a growing collection of tools that extend Hashes and make them more useful.
Installation
Hashie is available as a RubyGem:
gem install hashie
Mash
Mash is an extended Hash that gives simple pseudo-object functionality that can be built from hashes and easily extended. It is designed to be used in RESTful API libraries to provide easy object-like access to JSON and XML parsed hashes.
Example:
mash = Hashie::Mash.new
mash.name? # => false
mash.name # => nil
mash.name = "My Mash"
mash.name # => "My Mash"
mash.name? # => true
mash.inspect # => <Hashie::Mash name="My Mash">
mash = Mash.new
# use bang methods for multi-level assignment
mash..name = "Michael Bleigh"
mash. # => <Hashie::Mash name="Michael Bleigh">
Dash
Dash is an extended Hash that has a discrete set of defined properties and only those properties may be set on the hash. Additionally, you can set defaults for each property.
Example:
class Person < Hashie::Dash
property :name
property :email
property :occupation, :default => 'Rubyist'
end
p = Person.new
p.name # => nil
p.email = '[email protected]'
p.occupation # => 'Rubyist'
p.email # => '[email protected]'
p[:awesome] # => NoMethodError
p[:occupation] # => 'Rubyist'
p = Person.new(:name => "Bob")
p.name # => 'Bob'
p.occupation # => 'Rubyist'
Clash
Clash is a Chainable Lazy Hash that allows you to easily construct complex hashes using method notation chaining. This will allow you to use a more action-oriented approach to building options hashes.
Essentially, a Clash is a generalized way to provide much of the same kind of “chainability” that libraries like Arel or Rails 2.x’s named_scopes provide.
Example
c = Hashie::Clash.new
c.where(:abc => 'def').order(:created_at)
c # => {:where => {:abc => 'def}, :order => :created_at}
# You can also use bang notation to chain into sub-hashes,
# jumping back up the chain with _end!
c = Hashie::Clash.new
c.where!.abc('def').ghi(123)._end!.order(:created_at)
c # => {:where => {:abc => 'def', :ghi => 123}, :order => :created_at}
# Multiple hashes are merged automatically
c = Hashie::Clash.new
c.where(:abc => 'def').where(:hgi => 123)
c # => {:where => {:abc => 'def', :hgi => 123}}
Note on Patches/Pull Requests
-
Fork the project.
-
Make your feature addition or bug fix.
-
Add tests for it. This is important so I don’t break it in a future version unintentionally.
-
Commit, do not mess with rakefile, version, or history. (if you want to have your own version, that is fine but bump version in a commit by itself I can ignore when I pull)
-
Send me a pull request. Bonus points for topic branches.
Authors
-
Michael Bleigh
Copyright
Copyright © 2009 Intridea, Inc (intridea.com/). See LICENSE for details.