In an app I'm working on, I want to have a filter in which you can
specify certain attributes and click "filter" to activate an AJAX
request and return a list of, say, machines that match with those
attributes.
No I'm not sure how to build the controller.
If I would specify all the attributes, I would simply do:
def filter
@machines = Machine.find(:all, :conditions => { :attr_1 => params
[:attr_1], :attr_2 ... }
end
But how would I do this if only some of the attributes are specified
and the others are nil? Would I have to create @machines including all
machines and have Rails do the rest of the work or is there a way to
get find to do what I want?
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