For anyone else trying to do this, I couldn't find any docs on how to do
dynamic default values.
Objective: add an auto-generated UUID field to a Click model using Twitter's
simple_uuid gem.
Class Click
include Ripple::Document
include SimpleUUID
property :uuid, String, :default => foo
key on :uuid
def foo
UUID.new.to_guid
end
end
This just gave me "foo" every time:
Changing default to UUID.new.to_guid gave me a nice uuid value but the same one
each time.
I had to make the default property lambda { UUID.new.to_guid } for it to work.
Many other gems/plugins have a convention that if your value in these cases is
a symbol it treats it as a local function. This would mean changing the default
function in the Ripple gem to something like (untested and untried!):
def default
default = options[:default]
return nil if default.nil?
if default.is_a? :symbol
type_cast(self.respond_to?(:default) ? self.default : nil)
else
type_cast(default.respond_to?(:call) ? default.call : default)
end
end
M.
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