I'm trying to attach Datamapper to a middleman object of mine that
wont be persisting anything, but would be useful to hook into a web
form that does validations. Upon it's custom save, it would would
build a bunch of other objects. Running into all kinds of problems
however.
What's the best way to create a datamapper model without a persistance
layer?
Here's what I've tried so far:
-----
Using abstract:
DataMapper.setup(:abstract, "abstract::")
class Employer
include DataMapper::Resource
property :name, String
validates_present :name
def self.default_repository_name
:abstract
end
end
FAILS with error:
DataMapper::IncompleteModelError: Employer must have at least one
property or many to one relationship to be valid
-----
Using sqlite3 inmemory:
DataMapper.setup(:memory, "sqlite3::memory:")
class Employer
include DataMapper::Resource
property :name, String, :key => true
validates_present :name
def self.default_repository_name
:memory
end
end
FAILS with error:
DataMapper::IncompleteModelError: Employer must have at least one
property or many to one relationship to be valid
-----
Using just validate (works, kindof):
class Employer
include DataMapper::Validate
attr_accessor :name
attr_accessor :company
validates_present :name
end
This is what I ended up using, however it sucks since I don't have
access to the Datamapper builder methods (attributes= etc). So I have
to assign each accessory manually. We should think about making these
datamapper accessors methods a module so people can include them ala
cart
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