Hi, In Ruby is there a way to create variable names that are dynamic? An example would be I have a loop and I want to name the variables "foo_0", "foo_1", etc. Obviously in this case I don''t want to use an Array. Thanks, Frank _______________________________________________ Rails mailing list Rails-1W37MKcQCpIf0INCOvqR/iCwEArCW2h5@public.gmane.org http://lists.rubyonrails.org/mailman/listinfo/rails
I take it there''s a very good reason why you can''t have an array called ''foo'', and store your values in foo[0], foo[1] and so on? - james On 11/27/05, Frank Kim <railsonly-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org> wrote:> Hi, > In Ruby is there a way to create variable names that are dynamic? An > example would be I have a loop and I want to name the variables "foo_0", > "foo_1", etc. Obviously in this case I don''t want to use an Array. > Thanks, > Frank > _______________________________________________ > Rails mailing list > Rails-1W37MKcQCpIf0INCOvqR/iCwEArCW2h5@public.gmane.org > http://lists.rubyonrails.org/mailman/listinfo/rails > > >
On 27 Nov 2005, at 20:04, Frank Kim wrote:> In Ruby is there a way to create variable names that are dynamic? > An example would be I have a loop and I want to name the variables > "foo_0", "foo_1", etc. Obviously in this case I don''t want to use > an Array.It sounds /exactly/ like you want to use an array here... why wouldn''t you use an array? Yours, Craig -- Craig Webster | t: +44 (0)131 516 8595 | e: craig-07VhxHapISisTnJN9+BGXg@public.gmane.org Xeriom.NET | f: +44 (0)709 287 1902 | w: http://xeriom.net
Hi Frank,
You could do:
eval("#{variable_name} = #[value}")
or, for instance variables:
self.instance_variable_set(:@var_name, value)
Cheers!
-DF
On 11/28/05, Frank Kim <railsonly-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
wrote:> Hi,
> In Ruby is there a way to create variable names that are dynamic? An
> example would be I have a loop and I want to name the variables
"foo_0",
> "foo_1", etc. Obviously in this case I don''t want to
use an Array.
> Thanks,
> Frank
> _______________________________________________
> Rails mailing list
> Rails-1W37MKcQCpIf0INCOvqR/iCwEArCW2h5@public.gmane.org
> http://lists.rubyonrails.org/mailman/listinfo/rails
>
>
>
I''m not using an array because text_field does not understand arrays, to be more specific you can''t do a send of a [n] accessor. I am creating a page where you can create multiple records and the only way to do this and have values still be present on the page if there is an error is to use variables like foo_0, foo_1, foo_2, etc. On 11/27/05, James Adam <james.adam-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org> wrote:> > I take it there''s a very good reason why you can''t have an array > called ''foo'', and store your values in foo[0], foo[1] and so on? > > - james > > On 11/27/05, Frank Kim <railsonly-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org> wrote: > > Hi, > > In Ruby is there a way to create variable names that are dynamic? An > > example would be I have a loop and I want to name the variables "foo_0", > > "foo_1", etc. Obviously in this case I don''t want to use an Array. > > Thanks, > > Frank > > _______________________________________________ > > Rails mailing list > > Rails-1W37MKcQCpIf0INCOvqR/iCwEArCW2h5@public.gmane.org > > http://lists.rubyonrails.org/mailman/listinfo/rails > > > > > > > _______________________________________________ > Rails mailing list > Rails-1W37MKcQCpIf0INCOvqR/iCwEArCW2h5@public.gmane.org > http://lists.rubyonrails.org/mailman/listinfo/rails >-- Frank Kim http://betweengo.com/ _______________________________________________ Rails mailing list Rails-1W37MKcQCpIf0INCOvqR/iCwEArCW2h5@public.gmane.org http://lists.rubyonrails.org/mailman/listinfo/rails
Hi David, Thanks, I''ll try that out. -Frank On 11/27/05, David Felstead <david.felstead-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org> wrote:> > Hi Frank, > > You could do: > > eval("#{variable_name} = #[value}") > > or, for instance variables: > > self.instance_variable_set(:@var_name, value) > > Cheers! > > -DF > > On 11/28/05, Frank Kim <railsonly-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org> wrote: > > Hi, > > In Ruby is there a way to create variable names that are dynamic? An > > example would be I have a loop and I want to name the variables "foo_0", > > "foo_1", etc. Obviously in this case I don''t want to use an Array. > > Thanks, > > Frank > > _______________________________________________ > > Rails mailing list > > Rails-1W37MKcQCpIf0INCOvqR/iCwEArCW2h5@public.gmane.org > > http://lists.rubyonrails.org/mailman/listinfo/rails > > > > > > > _______________________________________________ > Rails mailing list > Rails-1W37MKcQCpIf0INCOvqR/iCwEArCW2h5@public.gmane.org > http://lists.rubyonrails.org/mailman/listinfo/rails >-- Frank Kim http://betweengo.com/ _______________________________________________ Rails mailing list Rails-1W37MKcQCpIf0INCOvqR/iCwEArCW2h5@public.gmane.org http://lists.rubyonrails.org/mailman/listinfo/rails