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module Disposable
class Twin
# Read all properties at twin initialization time from model.
# Simply pass through all properties from the model to the respective twin writer method.
# This will result in all twin properties/collection items being twinned, and collections
# being Collection to expose the desired public API.
module Setup
def initialize(model, options={})
@fields = {}
@model = model
@mapper = mapper_for(model) # mapper for model.
setup_properties!(options)
end
private
def mapper_for(model)
model
end
def setup_properties!(options)
schema.each { |dfn| setup_property!(dfn, options) }
end
def setup_property!(dfn, options)
value =
if options.has_key?(name = dfn.name.to_sym)
options[dfn.name.to_sym]
else
setup_value_for(dfn, options)
end
setup_write!(dfn, value) # note: even readable: false will be written to twin as nil.
end
def setup_value_for(dfn, options) # overridden by Default.
return if dfn[:readable] == false
read_value_for(dfn, options)
end
def read_value_for(dfn, options)
mapper.send(dfn.name) # model.title.
end
def setup_write!(dfn, value)
send(dfn.setter, value)
end
# Including this will _not_ use the property's setter in Setup and allow you to override it.
module SkipSetter
def setup_write!(dfn, value)
write_property(dfn.name, value, dfn)
end
end
end # Setup
end
end
Version data entries
8 entries across 8 versions & 1 rubygems