Rails - Apr 2008 - Can't get form results from a mutiple select box...

Hey everyone,
 This seems really elementary and I have no clue what is wrong... I have
a form that has two multiple select boxes (using some javascript to
shift items from the left select box to the right box and vice versa)
and I want to grab what is in the second box after the user clicks
submit. It seems that each time I try to get that info in my controller,
it is returning nil. My form is as follows:

<%= form_tag :controller => ''push'', :action =>
''index'', :type => ''test''
-%>
Choose users to sync (<%= @address_num %> total users)
<select name="sel1" style="width:200px"
size="10" multiple="multiple">
  <% @address_array.each do |item| %>
  <option value="<%= item %>"><%= item
%></option>
  <% end %>
</select>
<input type="button" value="--&gt;"
onclick="moveOptions(this.form.sel1,
this.form.sel2);" />
<input type="button" value="&lt;--"
onclick="moveOptions(this.form.sel2,
this.form.sel1);" />

<select name="sel2" style="width:200px"
size="10" multiple="multiple">
  <option value="1">All Users (default)</option>
</select>

<%= submit_tag ''submit'' %>
<%= end_form_tag -%>

In my controller, I have:

@results = params[:sel2]

but it turns out that @results is nil every time!

Does anybody know what is going wrong??

Thanks!!
 - Jeff Miller
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I just figured out something... If I actually select something in the 
second box, it works... but if there are multiple ones, it doesn''t. If 
multiple items are selected, it only passes the first in the box... I 
realize now that this is an HTML problem and I will have to just do a 
bunch of googling, but if anyone knows how to overcome this, any help 
would be appreciated.

Thanks,
 - Jeff Miller
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Hi, I''m just starting a project and want to implement the same 
functionality.  I would be very interested in knowing if/how you 
resolved this issue.  How are you handling loading both lists on page 
load?  That is, when you are editing an item, I would assume that you 
would only load the "available" list with non-selected items and the 
"selected" list with only those items previously selected.

TIA,
Henry

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Jeff Miller wrote:
> Hey everyone,
>  This seems really elementary and I have no clue what is wrong... I have
> a form that has two multiple select boxes (using some javascript to
> shift items from the left select box to the right box and vice versa)
> and I want to grab what is in the second box after the user clicks
> submit. It seems that each time I try to get that info in my controller,
> it is returning nil. My form is as follows:
> 
> <%= form_tag :controller => ''push'', :action =>
''index'', :type => ''test''
> -%>
> Choose users to sync (<%= @address_num %> total users)
> <select name="sel1" style="width:200px"
size="10" multiple="multiple">
>   <% @address_array.each do |item| %>
>   <option value="<%= item %>"><%= item
%></option>
>   <% end %>
> </select>
> <input type="button" value="--&gt;"
onclick="moveOptions(this.form.sel1,
> this.form.sel2);" />
> <input type="button" value="&lt;--"
onclick="moveOptions(this.form.sel2,
> this.form.sel1);" />
> 
> <select name="sel2" style="width:200px"
size="10" multiple="multiple">
>   <option value="1">All Users (default)</option>
> </select>
> 
> <%= submit_tag ''submit'' %>
> <%= end_form_tag -%>
pls try to name <select name="sel2[]"> like this (rest is same)
  <option value="1">All Users (default)</option>
</select>
In the controller pls try params[:sel2]||[]. I think this will give u
the all the values of all the selected options in the select drop down.
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