On Oct 19, 2011, at 4:14 PM, Angelo Cordova wrote:
>
> Hello everyone.
>
> I have a form in my ruby 1.9.2 rails 3.0.9 app, and one of the fields
> is a "collection select" like this
>
> <div class="field">
> <%= f.label :provider_id, "Provider" %>
> <%= collection_select( :purchase_document, :provider_id,
> Provider.all, :id, :name) %>
> </div>
>
> The idea, is to be able to add a "link_to" using the selected value
> from the "collection select" i.e.:
>
> <div class="field">
> <%= f.label :provider_id, "Provider" %>
> <%= collection_select( :purchase_document, :provider_id,
> Provider.all, :id, :name) %> <%= link_to "Show",
> provider_path(***selected option from collection select***)%>
>
> But, I don't know how to get the selected value. Is there a rails way
> to do that?
>
> Hope you can help me, thanks
There's two ways to do this, which one you choose depends on what stage you
want the choice to be made in. If you want to submit a form to the controller,
and then have the controller redirect based on the value of that select, you
could do something like this (post to a "redirect" method):
def redirect
@provider = Provider.find(:whatever_your_model_is[:provider_id]])
redirect_to @provider
end
If you want this redirect to happen in the browser, without touching the
server, then you would just observe the change event on the picker, and
redirect based on that.
document.observe('dom:loaded', function(){
$('whatever_your_model_is_provider_id').observe('change', function(evt){
if(!!$F(this)){
window.location.href = '/providers/' + $F(this);
}
});
});
Walter
>
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