Leonel *.* wrote in post #1018324:
I have an edit form and I need to get the SELECTED VALUE from a
collection_select in a variable.
So if I have this...
<%= f.collection_select :part_id, @parts, :id, :cost_and_name, :prompt
=> "Select" %>
How can I peek inside and get, for example, the part_id?
Okay, look at this:
> > >
browser> 2) | server |
> <--- response -- | |
+--------+ (html page) ------------
3) User makes 1) ruby code
a selection executes
What you are asking is: "In step 1 can I obtain the user's selection?"
The answer, obviously, is no. The ruby code executes before the user
makes a selection.
However, if your select is inside a form, then when the user submits the
form, the selection will be in params, and it can be accessed like
params[:name_of_select]. If you don't know what the value of the
select's name attribute is, do a 'View Source' when the select appears
in your browser, and look at the name attribute.
guessing you don't know either one.