Hi, I''m currently working with ActiveResource and I have some troubles
with it.
I have two models on the server side, Artist and Song
Songs: belong_to :artist and Artist: has_many :songs
I also have two controllers methods :
A method songs in the ArtistsController that return his songs
and a list_by_artist in the SongsController that return all the songs
for an artist.
All of this is Restful.
map.resources :artists, :member => {:songs => :get}
map.resources :songs, :collection => {:list_by_artist => :get}
I know that these two methods does the same thing and I will keep only
one of them at the end but :
I wan''t to be able to retrieve all the songs of an artist in the
client side (with ActiveResource) as Songs objects
I can do :
Artist.find(1).get(:songs) to retrieve an Array
but
Artist.find(1).find(:songs) gives me a NoMethodError for the find
method
I can also do
Song.get(:list_by_artist, :id => 1) #again an Array...
but
Song.find(:list_by_artist, :id => 1) gives me :
ArgumentError: expected an attributes Hash, got []
from /var/lib/gems/1.8/gems/activeresource-2.1.0/lib/
active_resource/base.rb:883:in `load''
from /var/lib/gems/1.8/gems/activeresource-2.1.0/lib/
active_resource/base.rb:639:in `initialize''
...
Looks like Rails try to instanciate a record where it should
instantiate a collection.
Is there any way to solve this ?
Is my method buggy, or is it Rails ?
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> Artist.find(1).get(:songs) to retrieve an Array > but > Artist.find(1).find(:songs) gives me a NoMethodError for the find > methoderr.. you could do @artist = Artist.find(1) @songs = @artist.songs you get a NoMethodError because you are trying to call find on a Artist object> Song.find(:list_by_artist, :id => 1) gives me : > > ArgumentError: expected an attributes Hash, got [] > from /var/lib/gems/1.8/gems/activeresource-2.1.0/lib/ > active_resource/base.rb:883:in `load'' > from /var/lib/gems/1.8/gems/activeresource-2.1.0/lib/ > active_resource/base.rb:639:in `initialize'' > ...if you want to get the songs from a artist you can do like i said before or: @songs = Song.find_by_artist_id(1) # guess you have a artist_id on songs if I''m not mistaken this is the right way... -- 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 -~----------~----~----~----~------~----~------~--~---
> if you want to get the songs from a artist you can do like i said before > or: > > @songs = Song.find_by_artist_id(1) # guess you have a artist_id on songs > > > if I''m not mistaken this is the right way...Sorry, to retrieve all the songs from an artist you call @songs = Song.find_all_by_artist_id(1) # guess you have a artist_id on songs if you use the find_by_artist_id, you would get just one song instead of all of them -- 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 -~----------~----~----~----~------~----~------~--~---
Will this work even though the two models are ActiveResource based? I didn''t think it provided you with the finder methods on ActiveResource models. On 21/07/2008, at 7:06 AM, Andreh Luis wrote:> > >> if you want to get the songs from a artist you can do like i said >> before >> or: >> >> @songs = Song.find_by_artist_id(1) # guess you have a artist_id on >> songs >> >> >> if I''m not mistaken this is the right way... > > Sorry, to retrieve all the songs from an artist you call > > @songs = Song.find_all_by_artist_id(1) # guess you have a artist_id on > songs > > if you use the find_by_artist_id, you would get just one song > instead of > all of them > -- > 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 -~----------~----~----~----~------~----~------~--~---
Yes all this find_by_*** stuff and even @artist = Artist.find(1) @songs = @artist.songs doesn''t work just cause it should not wok, I don''t want to be able to do anything on my "server" models, just the stuff that the RESTFUL webservice "describe" (that means that I have to call URL, not server models methods). The right way to do this is the Artist.find(1).get(:songs) or Song.get(:list_by_artist, :id => 1) but as I say previously, this return an Array. I''m not sure that Artist.find(1).find(:songs) should work (find is not defined for an ActiveResource object) but Song.find(:list_by_artist, :id => 1) should work according to the doc, but it just doesn''t work according to my test :) Any other idea ? On Jul 20, 11:49 pm, Ryan Bigg <radarliste...-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org> wrote:> Will this work even though the two models are ActiveResource based? I > didn''t think it provided you with the finder methods on ActiveResource > models. > > On 21/07/2008, at 7:06 AM, Andreh Luis wrote: > > > > >> if you want to get the songs from a artist you can do like i said > >> before > >> or: > > >> @songs = Song.find_by_artist_id(1) # guess you have a artist_id on > >> songs > > >> if I''m not mistaken this is the right way... > > > Sorry, to retrieve all the songs from an artist you call > > > @songs = Song.find_all_by_artist_id(1) # guess you have a artist_id on > > songs > > > if you use the find_by_artist_id, you would get just one song > > instead of > > all of them > > -- > > Posted viahttp://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@googlegroups.com For more options, visit this group at http://groups.google.com/group/rubyonrails-talk?hl=en -~----------~----~----~----~------~----~------~--~---
Ryan Bigg wrote:> Will this work even though the two models are ActiveResource based? I > didn''t think it provided you with the finder methods on ActiveResource > models.Ops.. that''s right it won''t work... my mistake... -- 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''m a bit confused. Why not just say: artist.songs (that''ll return all the songs for a given artist object) or Song.find_by_artist_id(1) which will return all the songs where artist ID is one If you''re not able to do that in script/console then your models are not defined correctly. Artist < ActiveRecord::Base should have "has_many :songs" and Song < ActiveRecord::Base should have "belongs_to :artist" I think ActiveRecord is pretty tight - I haven''t experienced any bugs (well just one but it was some really far out funky thing). The stuff you are doing is run-of-the-mill every day AcitveRecord. If you''re wanting to do it REST style then you need to define some nested routes. That''ll give you something like /artists/1/songs/4 for song with ID of 4, which belongs to artist 1. That has more to do with ActiveResource than ActiveRecord. Nicholas On Jul 20, 5:07 pm, jblanche <jonathan.blanc...-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org> wrote:> Yes all this find_by_*** stuff and even > @artist = Artist.find(1) > @songs = @artist.songs > doesn''t work just cause it should not wok, I don''t want to be able to > do anything on my "server" models, just the stuff that the RESTFUL > webservice "describe" (that means that I have to call URL, not server > models methods). > > The right way to do this is the > > Artist.find(1).get(:songs) > or > Song.get(:list_by_artist, :id => 1) > > but as I say previously, this return an Array. > > I''m not sure that > Artist.find(1).find(:songs) > should work (find is not defined for an ActiveResource object) > but > Song.find(:list_by_artist, :id => 1) > should work according to the doc, but it just doesn''t work according > to my test :) > > Any other idea ? > > On Jul 20, 11:49 pm, Ryan Bigg <radarliste...-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org> wrote: > > > Will this work even though the two models are ActiveResource based? I > > didn''t think it provided you with the finder methods on ActiveResource > > models. > > > On 21/07/2008, at 7:06 AM, Andreh Luis wrote: > > > >> if you want to get the songs from a artist you can do like i said > > >> before > > >> or: > > > >> @songs = Song.find_by_artist_id(1) # guess you have a artist_id on > > >> songs > > > >> if I''m not mistaken this is the right way... > > > > Sorry, to retrieve all the songs from an artist you call > > > > @songs = Song.find_all_by_artist_id(1) # guess you have a artist_id on > > > songs > > > > if you use the find_by_artist_id, you would get just one song > > > instead of > > > all of them > > > -- > > > Posted viahttp://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@googlegroups.com For more options, visit this group at http://groups.google.com/group/rubyonrails-talk?hl=en -~----------~----~----~----~------~----~------~--~---
You obviously didn''t quite read the first email, or the title of this thread. He''s using Active*Resource* models, not ActiveRecord. The dynamic finders you so trumpet are not available to him! Please read thoroughly next time! On 21/07/2008, at 2:51 PM, ncancelliere wrote:> > I''m a bit confused. Why not just say: > > artist.songs (that''ll return all the songs for a given artist > object) or > Song.find_by_artist_id(1) which will return all the songs where > artist ID is one > > If you''re not able to do that in script/console then your models are > not defined correctly. > > Artist < ActiveRecord::Base should have "has_many :songs" and > Song < ActiveRecord::Base should have "belongs_to :artist" > > I think ActiveRecord is pretty tight - I haven''t experienced any bugs > (well just one but it was some really far out funky thing). The stuff > you are doing is run-of-the-mill every day AcitveRecord. > > If you''re wanting to do it REST style then you need to define some > nested routes. That''ll give you something like /artists/1/songs/4 > for song with ID of 4, which belongs to artist 1. That has more to do > with ActiveResource than ActiveRecord. > > Nicholas > > > > On Jul 20, 5:07 pm, jblanche <jonathan.blanc...-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org> wrote: >> Yes all this find_by_*** stuff and even >> @artist = Artist.find(1) >> @songs = @artist.songs >> doesn''t work just cause it should not wok, I don''t want to be able to >> do anything on my "server" models, just the stuff that the RESTFUL >> webservice "describe" (that means that I have to call URL, not server >> models methods). >> >> The right way to do this is the >> >> Artist.find(1).get(:songs) >> or >> Song.get(:list_by_artist, :id => 1) >> >> but as I say previously, this return an Array. >> >> I''m not sure that >> Artist.find(1).find(:songs) >> should work (find is not defined for an ActiveResource object) >> but >> Song.find(:list_by_artist, :id => 1) >> should work according to the doc, but it just doesn''t work according >> to my test :) >> >> Any other idea ? >> >> On Jul 20, 11:49 pm, Ryan Bigg <radarliste...-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org> wrote: >> >>> Will this work even though the two models are ActiveResource >>> based? I >>> didn''t think it provided you with the finder methods on >>> ActiveResource >>> models. >> >>> On 21/07/2008, at 7:06 AM, Andreh Luis wrote: >> >>>>> if you want to get the songs from a artist you can do like i said >>>>> before >>>>> or: >> >>>>> @songs = Song.find_by_artist_id(1) # guess you have a artist_id on >>>>> songs >> >>>>> if I''m not mistaken this is the right way... >> >>>> Sorry, to retrieve all the songs from an artist you call >> >>>> @songs = Song.find_all_by_artist_id(1) # guess you have a >>>> artist_id on >>>> songs >> >>>> if you use the find_by_artist_id, you would get just one song >>>> instead of >>>> all of them >>>> -- >>>> Posted viahttp://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 -~----------~----~----~----~------~----~------~--~---
So nobody has any idea ? Should I submit a bug in Lighthouse ? On Mon, Jul 21, 2008 at 7:36 AM, Ryan Bigg <radarlistener-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org> wrote:> > You obviously didn''t quite read the first email, or the title of this > thread. > > He''s using Active*Resource* models, not ActiveRecord. The dynamic > finders you so trumpet are not available to him! > > Please read thoroughly next time! > On 21/07/2008, at 2:51 PM, ncancelliere wrote: > > > > > I''m a bit confused. Why not just say: > > > > artist.songs (that''ll return all the songs for a given artist > > object) or > > Song.find_by_artist_id(1) which will return all the songs where > > artist ID is one > > > > If you''re not able to do that in script/console then your models are > > not defined correctly. > > > > Artist < ActiveRecord::Base should have "has_many :songs" and > > Song < ActiveRecord::Base should have "belongs_to :artist" > > > > I think ActiveRecord is pretty tight - I haven''t experienced any bugs > > (well just one but it was some really far out funky thing). The stuff > > you are doing is run-of-the-mill every day AcitveRecord. > > > > If you''re wanting to do it REST style then you need to define some > > nested routes. That''ll give you something like /artists/1/songs/4 > > for song with ID of 4, which belongs to artist 1. That has more to do > > with ActiveResource than ActiveRecord. > > > > Nicholas > > > > > > > > On Jul 20, 5:07 pm, jblanche <jonathan.blanc...-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org> wrote: > >> Yes all this find_by_*** stuff and even > >> @artist = Artist.find(1) > >> @songs = @artist.songs > >> doesn''t work just cause it should not wok, I don''t want to be able to > >> do anything on my "server" models, just the stuff that the RESTFUL > >> webservice "describe" (that means that I have to call URL, not server > >> models methods). > >> > >> The right way to do this is the > >> > >> Artist.find(1).get(:songs) > >> or > >> Song.get(:list_by_artist, :id => 1) > >> > >> but as I say previously, this return an Array. > >> > >> I''m not sure that > >> Artist.find(1).find(:songs) > >> should work (find is not defined for an ActiveResource object) > >> but > >> Song.find(:list_by_artist, :id => 1) > >> should work according to the doc, but it just doesn''t work according > >> to my test :) > >> > >> Any other idea ? > >> > >> On Jul 20, 11:49 pm, Ryan Bigg <radarliste...-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org> wrote: > >> > >>> Will this work even though the two models are ActiveResource > >>> based? I > >>> didn''t think it provided you with the finder methods on > >>> ActiveResource > >>> models. > >> > >>> On 21/07/2008, at 7:06 AM, Andreh Luis wrote: > >> > >>>>> if you want to get the songs from a artist you can do like i said > >>>>> before > >>>>> or: > >> > >>>>> @songs = Song.find_by_artist_id(1) # guess you have a artist_id on > >>>>> songs > >> > >>>>> if I''m not mistaken this is the right way... > >> > >>>> Sorry, to retrieve all the songs from an artist you call > >> > >>>> @songs = Song.find_all_by_artist_id(1) # guess you have a > >>>> artist_id on > >>>> songs > >> > >>>> if you use the find_by_artist_id, you would get just one song > >>>> instead of > >>>> all of them > >>>> -- > >>>> Posted viahttp://www.ruby-forum.com/. > > > > > > > >-- Jonathan Blanchet http://blogbangbang.com/ C.V. : http://cv.blogbangbang.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 -~----------~----~----~----~------~----~------~--~---