Disabled option tags in rails forms
Update: My patch has now been accepted into core, which means that as of Rails 2.3, this plugin should no longer be necessary. More details here.
Ever wanted to disable options in a form select in rails? I have; it feels more useable to me to disable out of stock product sizes:
The rails Form Option Helpers won’t let you do this as they currently stand. So until things change in core, I’ve put together the option_tags_will_disable plugin.
Simply specify the disabled values when calling options_for_select:
<%= options_for_select(
['Choose a size', 'small', 'medium', 'large'],
nil, # selected value
'medium' # disabled value
) %>
<!-- Gives you -->
<option value="Choose a size">Please choose a size</option>
<option value="s">small</option>
<option value="m" disabled="disabled">medium</option>
<option value="l">large</option>
You can do the same when working with collections, but more interestingly, you can also give a Proc to identify which elements should be disabled:
<%= options_from_collection_for_select(
@products,
:id,
:name,
nil,
lambda{|p| !p.in_stock? }
) %>
And as an added bonus, selected options can also be identified with a Proc!
