1. Feb 27th, 2007

    Validating XML documents with Ruby code

    A simple DSL to keep it short and simple, declarations to define the structure, and imperative code to handle that which can’t easily be declared. Just a rough sketch, but wouldn’t this be easier than half functional XML Schema?

    validate do
  email.optional
  phone.optional
  im_handle.optional
  raise "Must specify at least one means of contact" unless
   email || phone || im_handle

  address.required do
    street.required
    city.required
    state.optional
    country.optional :default=>"US"
    raise "State required for all addresses in the US" if
      country == "US" && !state
    raise "Zipcode does not match the rest of the address" if
      valid_zipcode?(street, city, state, country, zipcode)
  end

end

    Posted by Assaf Filed in ruby

    1. Feb 27th, 2007

      http://realfiction.net/

      Hi there,
      I will try out this OpenID feature of yours. Looks good!
      Anyway, your example looks a lot like RelaxNG, so have a look at http://relaxng.org. I don’t think support is great out there and the syntax is also XML (so no lovely rubycode), but there’s quite a bit of beef behind it.
      Cheers

    2. Feb 27th, 2007

      Dr Nic

      *sniff* That’s beautiful.

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