From: Robert Klemme <bob.news@...>
Date: 2004-01-19T17:40:00+09:00
Subject: Re: setting instance variable "dynamically"


"Bauduin Raphael" <rb@raphinou.com> schrieb im Newsbeitrag
news:400ad514$0$1128$6c56d894@feed0.news.be.easynet.net...
> Thanks for the answers!
>
> In my class I now use this :
>
> instance_eval("@#{row[1]}=Translation.new(row)")

I'd prefer using "instance_variable_set" because that doesn't require a
setter method to be defined.

irb(main):007:0> class Foo;end
=> nil
irb(main):008:0> f=Foo.new
=> #<Foo:0x10182008>
irb(main):009:0> f.instance_variable_set "@foo", "bar"
=> "bar"
irb(main):010:0> f
=> #<Foo:0x10182008 @foo="bar">
irb(main):011:0>

With your code:

class Term
attr :query, :fr, :nl, :en
     def initialize(dbh, id)
         @query = "select * from translations where id='#{id}'"
         dbh.select_all(query) do |row|
             instance_variable_set "@"+row[1], Translation.new(row)
         end
     end
     def get_french()
         @fr.value
     end
end

Regards

    robert