On Tuesday 14 Feb 2012 11:13:14 Michael Gliwinski wrote:
> On Monday 13 Feb 2012 16:47:04 Jeremy Evans wrote:
> > just override the accessor:
> > class Foo < Sequel::Model
> >
> > def col
> >
> > s = super
> > Integer(s) if s
> >
> > end
> >
> > end
>
> Yeah, there aren't that many of these ones in particular (char -> int), but
> in general this 3rd party app likes to use char for everything so I'm
> trying to find a fairly generic way to apply such transformations.
>
> This would work OK though, so I'll try to find a way to maybe write a
> method that defines an accessors for a specified type and a list of
> columns, but I suppose this is more a ruby question so I won't bother you
> about that.
I've managed to come up with something, just sending it here in case it would
be useful for somebody else in the future.
module Sequel
class Model
def self.def_transforming_readers(*names, &block)
if not block_given?
cls = names.shift
block = lambda {|v| cls.new(v)}
end
for name in names
overridable_methods_module.module_eval {
define_method(name) {block.call(super)}
}
end
end
end
end
then in the model I do:
class Foo < Sequel::Model
def_transforming_readers(:bar, :baz) {|v| Integer(v)}
end
thanks for your help Jeremy!
--
Michael Gliwinski
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Phone: 028 9034 3319
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