*Model.last* http://guides.rails.info/active_record_querying.html
On Fri, Jul 30, 2010 at 10:48 AM, crashbangboom <[email protected]>wrote: > I'm new to rails and am trying to get an understanding on some of the > language usage...I have a mysql database with a table of data...I want > to retrieve the last record in that table without sending it an 'id' > or anything...I've tried the following: > > def get_last_net_vol > @prevticket = Tankticket.find(:last) > last_net_vol = @prevticket.net_vol > return last_net_vol > end > > This fails with: > > Couldn't find Tankticket with ID=last > > Extracted source (around line #54): > > 51: <p>VCF = <%= ctl -%></p> > 52: <p>Net Vol = <%= round((grs_vol * ctl + roof_cor), 2) -%></p> > 53: > 54: <p>Last Net Vol = <%= get_last_net_vol -%></p> > > Everything I've read tells me this should have worked so I'm > suspicious that it might be the version of rails I'm running...! > > I'm running an old dual proc mac G4 with os x 10.5.8...ruby version > 1.8.6...gem version 1.0.1...rails version 1.2.6 > > I know I should update to the later version of rails and gem...I have > tried but the standard methods to do so fail with > (Gem:RemoteSourceException) HTTP Response 301 fetching > http://gems.rubyforge.org/yaml)...I guess I could install it the hard > way but I don't want to chance compromising my current running > install...! > > Any light shed will be greatly appreciated...! > > -- > 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]<rubyonrails-talk%[email protected]> > . > For more options, visit this group at > http://groups.google.com/group/rubyonrails-talk?hl=en. > > -- 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.
