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Asked: 2026-05-10T20:06:51+00:00

I have a partial that renders a select box using the following method: <%=

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I have a partial that renders a select box using the following method:

<%= collection_select 'type', 'id', @types, 'id', 'name',    {:prompt => true},    {:onchange =>                remote_function(               :loading => 'Form.Element.disable('go_button')',               :url => '/sfc/criteria/services',                :with => ''type_id=' + encodeURIComponent(value) + '&use_wizard=#{use_wizard}''),     :class => 'hosp_select_buttons' } %>

This partial gets used 2 times on every page, but at one point I need to get the value of the first select box. Using:

$('type_id')

returns the second select box. Is there a way to find the first one easily? Should I fix this using javascript or by redoing my partial?

Note: the dropdowns do get rendered in separate forms.

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1 Answer

  1. Yes, each element does need a unique ID, the page probably also fails HTML validation. Also, unless these are in 2 different forms you’ll have a conflict with the CGI parameter name.

    If they are in 2 different forms you can probably get away with just setting the :id as you posted, if they are the same form you need to abstract the parameter name too:

    collection_select ‘type’, ‘id_wizard_#{use_wizard}’…

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