From: Florian Gross <flgr@...>
Date: 2004-09-29T05:24:21+09:00
Subject: Re: metaprogramming question, alternatives to "class ..."

Kevin McConnell wrote:

> In other words, say I have something like this:
> 
> class AddressDataSource < DataSourceBase
>   field :name, "customer_name"
>   field :address, "cust_addr"
> end
> 
> ...is there any cunning trickery that would allow me to do this:
> 
> datasource AddressDataSource
>   field :name, "customer_name"
>   field :address, "cust_addr"
> end

You can have this:

datasource(:AddressDataSource) do
   field :name, "customer_name"
   field :address, "cust_addr"
end

With this:

def datasource(name, &block)
   Object.const_set(name, Class.new(DataSourceBase, &block))
end

> Cheers,
>   Kevin

Regards,
Florian Gross