HashToObject
HashToObject is a mixin for converting hashes into ruby objects. For instance, if you wanted to build Foo objects, you could define it as such:
class Foo
include HashToObject
def initialize(options = {})
objectify(options)
end
end
You can now build new Foo objects with arbitrary key value pairs and have access to them.
foo = Foo.new('bar' => 'baz', 'qux' => [1,2,3])
foo.bar
=> "baz"
foo.bar = "garply"
=> "garply"
quux = Foo.new('corge' => 'grault')
quux.bar
=> NoMethodError: undefined method 'bar'
quux.corge
=> "grault"
Recursion and Nesting
HashToObject also supports nesting of object creation. Note that you will need classes that correspond to the hash structure.
class Foo::Item
include HashToObject
def initialize(options = {})
objectify(options)
end
end
class Foo::Lolipop
include HashToObject
def initialize(options = {})
objectify(options)
end
def waldo
"Where in the world is #{@id}?"
end
end
foo = Foo.new('item' => {'name' => 'foo'}, 'lolipops' => [{'id'=> 'bar'}, {'id'=> 'baz'}])
foo.item
=> #<Foo::Item:0x007fbf40ee1e78 @name="foo">
foo.lolipops
=> [#<Foo::Lolipop:0x007fbf429d4780 @id="bar">, #<Foo::Lolipop:0x007fbf42bc1a48 @id="baz">]
foo.lolipops.first.waldo
=> "Where in the world is bar?"