Hey, goodevening to all. I have something that I wonder if I can do better. I have a list or records, employee records Marco from Amsterdam Silvia from Amsterdam Enola from Rotterdam Elisa From Utrecht These are now shown as Amsterdam Marco Amsterdam Silvia Rotterdam Enola Utrecht Elisa What I would really want is Amsterdam Marco Silvia Rotterdam Enola Utrecht Elisa So to have them grouped by the City from which they come from Is there an elegant solution to this? I know a couple, but all seem like nasty hacks (like putting all the cities up and query each and every city) Hope someone can help Thank you Kind regards, Marco -- Posted via http://www.ruby-forum.com/. --~--~---------~--~----~------------~-------~--~----~ 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 rubyonrails-talk-/JYPxA39Uh5TLH3MbocFFw@public.gmane.org To unsubscribe from this group, send email to rubyonrails-talk-unsubscribe-/JYPxA39Uh5TLH3MbocFFw@public.gmane.org For more options, visit this group at http://groups.google.com/group/rubyonrails-talk?hl=en -~----------~----~----~----~------~----~------~--~---
> I have something that I wonder if I can do better. > I have a list or records, employee records > > Marco from Amsterdam > Silvia from Amsterdam > Enola from Rotterdam > Elisa From Utrecht > > These are now shown as > > Amsterdam > Marco > Amsterdam > Silvia > Rotterdam > Enola > Utrecht > Elisa > > What I would really want is > > Amsterdam > Marco > Silvia > > Rotterdam > Enola > > Utrecht > Elisa > > So to have them grouped by the City from which they come from > Is there an elegant solution to this? I know a couple, but all seem like > nasty hacks (like putting all the cities up and query each and every > city)Assuming that each record has name and city as attributes you could do something like: last_city = nil @results.each do |r| if last_city != r.city then puts "\n" unless r == @results.first puts r.city last_city = r.city end puts r.name end My memory is there''s a nifty way to do it in Ruby, but I can''t recall what it is right now... --~--~---------~--~----~------------~-------~--~----~ 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 rubyonrails-talk-/JYPxA39Uh5TLH3MbocFFw@public.gmane.org To unsubscribe from this group, send email to rubyonrails-talk-unsubscribe-/JYPxA39Uh5TLH3MbocFFw@public.gmane.org For more options, visit this group at http://groups.google.com/group/rubyonrails-talk?hl=en -~----------~----~----~----~------~----~------~--~---
bcparanj-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org
2007-Mar-01 06:28 UTC
Re: Grouping of related records
class MyLister
def initialize(city, names)
@city = city
@names = names
end
def to_s
puts "#{@city}"
@names.each { |name| puts name }
end
end
m = MyLister.new("Kansas", ["Andy", "Brady",
"Cuddy"])
m.to_s
This prints:
Kansas
Andy
Brady
Cuddy
Any other elegant solution?
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That''s nifty, but any idea what the Activerecord aquivalent would be? Thanks! Marco bcparanj-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org wrote:> class MyLister > > def initialize(city, names) > @city = city > @names = names > end > > def to_s > puts "#{@city}" > @names.each { |name| puts name } > end > end > > > m = MyLister.new("Kansas", ["Andy", "Brady", "Cuddy"]) > m.to_s > > This prints: > > Kansas > Andy > Brady > Cuddy > > Any other elegant solution?-- Posted via http://www.ruby-forum.com/. --~--~---------~--~----~------------~-------~--~----~ 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 rubyonrails-talk-/JYPxA39Uh5TLH3MbocFFw@public.gmane.org To unsubscribe from this group, send email to rubyonrails-talk-unsubscribe-/JYPxA39Uh5TLH3MbocFFw@public.gmane.org For more options, visit this group at http://groups.google.com/group/rubyonrails-talk?hl=en -~----------~----~----~----~------~----~------~--~---