Rails - May 2009 - how to get the multiple selected data from select_tag.

Im trying to get the multiple selected data from select_tag., but its
gives single data

I hv written.
 <%=select_tag( :cons_attribute_id,options_from_collection_for_select
(Attribute.find_all_by_attributetype("cons"),
                "id", "name", 3),:multiple=>true) %>

I hv also written as:

 <%=select_tag( :cons_attribute_id[],options_from_collection_for_select
(Attribute.find_all_by_attributetype("cons"),
                "id", "name", 3),:multiple=>true) %>

  but it gives error.. such as method not defined

On May 11, 12:18 pm, nishi
<n.mridut...-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
wrote:
>
>  <%=select_tag( :cons_attribute_id[],options_from_collection_for_select
> (Attribute.find_all_by_attributetype("cons"),
>                 "id", "name", 3),:multiple=>true)
%>
>
>   but it gives error.. such as method not defined
when you write :foo[] ruby thinks that you want to call the [] method
on the symbol :foo. You can be explicit that you want the symbol with
content foo[] by doing :''foo[]''
In this case you could also just pass a string to select_tag

Fred

Hi Nishi,

Follow the
blog<http://railsbuilder.blogspot.com/2009/05/multiple-select-option-in-rails.html>it
may help you
http://railsbuilder.blogspot.com/2009/05/multiple-select-option-in-rails.html

Thanks

On Mon, May 11, 2009 at 4:48 PM, nishi
<n.mriduta07-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org> wrote:
>
> Im trying to get the multiple selected data from select_tag., but its
> gives single data
>
> I hv written.
>  <%=select_tag( :cons_attribute_id,options_from_collection_for_select
> (Attribute.find_all_by_attributetype("cons"),
>                "id", "name", 3),:multiple=>true)
%>
>
> I hv also written as:
>
>  <%=select_tag( :cons_attribute_id[],options_from_collection_for_select
> (Attribute.find_all_by_attributetype("cons"),
>                "id", "name", 3),:multiple=>true)
%>
>
>  but it gives error.. such as method not defined
>
> >
>
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Thx Fred and Arun.

I got the solution,

<%=select_tag("attribute_id[]",options_from_collection_for_select
(Attribute.find_all_by_attributetype("cons"), "id",
"name",
3),:multiple=>true) %>

Hi Fred,
thx for ur resp.

but i hv one more ques.
here we r using the

       options_from_collection_for_select
(Attribute.find_all_by_attributetype("cons")

I need a solution where  we will get the data from model not directly
by "collection_select"
please give me sm idea, i need it as soon as possible.