Is there a handy way to run validation on a single attribute? I have a form with potentially many objects. The user will enter a single number for each of these objects and I''d like to perform validation on that entry. But I don''t want to fully validate the object because of the associations involved in running a full validation. -- 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 -~----------~----~----~----~------~----~------~--~---
Jake Janovetz wrote:> Is there a handy way to run validation on a single attribute? > > I have a form with potentially many objects. The user will enter a > single number for each of these objects and I''d like to perform > validation on that entry. But I don''t want to fully validate the object > because of the associations involved in running a full validation.Jake, As written, your question begs a simple answer...which in this case is ''Yes''. It''s been my experience that I always get more/better help if I include some code in my questions. In this case, we don''t have any names with which to provide you with an example of how it would be written. If you send along the schema for your object and explain a bit more about how this object appears in your form, then we can probably provide better help. thanks, jp -- 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 -~----------~----~----~----~------~----~------~--~---
Jeff Pritchard wrote:> Jake Janovetz wrote: >> Is there a handy way to run validation on a single attribute? >> >> I have a form with potentially many objects. The user will enter a >> single number for each of these objects and I''d like to perform >> validation on that entry. But I don''t want to fully validate the object >> because of the associations involved in running a full validation. > > Jake, > As written, your question begs a simple answer...which in this case is > ''Yes''. > > It''s been my experience that I always get more/better help if I include > some code in my questions. > > In this case, we don''t have any names with which to provide you with an > example of how it would be written. If you send along the schema for > your object and explain a bit more about how this object appears in your > form, then we can probably provide better help. > > thanks, > jpWell, without adding too much detail, say I have: validates_numericality_of :x validates_associated :a validates_associated :b validates_associated :c The a, b, c will be setup in advance so can be considered reliable. The user will enter ''x'' and that piece needs to be validated. I don''t want to run validation on a, b, c because those make additional database hits and have even more database hits when the associations'' associations are validated in turn. Ideally, I''d like something like: obj.valid?(:only => :x) What I''ve done for the time being is just write a method that sets a variable, then I''ve modified my validations as such: validates_associated :a, :if => !@validate_only_x validates_associated :b, :if => !@validate_only_x validates_associated :c, :if => !@validate_only_x It''s not very pretty. -- 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 -~----------~----~----~----~------~----~------~--~---