Rails - Dec 2011 - Form helper and select_tag

I can generage select-tag easily and it works fine:

<%= select_tag "category",
options_from_collection_for_select(@categories, "id",
"name"), :multiple
=> true, :include_blank => true %>

But how can I make "selected" some values?

@selected_categories = Array[1, 3]

So id 1 and 3 should be: <option selected="selected">

How can I do it?

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On Dec 15, 2:39 pm, Fresh Mix
<li...-fsXkhYbjdPsEEoCn2XhGlw@public.gmane.org>
wrote:
> I can generage select-tag easily and it works fine:
>
> <%= select_tag "category",
> options_from_collection_for_select(@categories, "id",
"name"), :multiple
> => true, :include_blank => true %>
>
> But how can I make "selected" some values?
>
> @selected_categories = Array[1, 3]
>
> So id 1 and 3 should be: <option selected="selected">
Start by reading the documentation for
options_from_collection_for_select

Fred

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