That works, though it's definitely a good idea to sanitize which params can
be used in such a manner. Otherwise, someone could send params like {
:destroy_all => true } or something, and then there goes your database.
PatOn Sat, Jul 4, 2009 at 1:07 PM, Matt Jones <[email protected]> wrote: > > You could try building up a chain of scopes - see this post: > > > http://groups.google.com/group/rubyonrails-talk/browse_thread/thread/a7df6a8b9628bb4b/d6b738f83084ec91?lnk=gst&q=scoped#d6b738f83084ec91 > > As noted there, you can avoid cluttering up your model by using > 'scoped' to create anonymous scopes. > > So your example would look like: > > # in the controller action > proxy = Machine > [:attr1, :attr2, :attr3].each do { |k| > proxy = proxy.scoped(:conditions => Hash[k, params[k]]) unless params > [k].blank? > } > @machines = proxy.find(:all) > > That last find can also be a paginate, have limits, sorts, etc. > > --Matt Jones > > On Jul 2, 5:42 pm, jhaagmans <[email protected]> wrote: > > 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? > > > --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "Ruby on Rails: Talk" group. To post to this group, send email to [email protected] To unsubscribe from this group, send email to [email protected] For more options, visit this group at http://groups.google.com/group/rubyonrails-talk?hl=en -~----------~----~----~----~------~----~------~--~---
