I have this code that is using svn externals with rails EDGE working
fine for the past couple of months. A couple of days ago, this code
died. Even after deleting vendor/rails, this code doesnt work:
class Tag < ActiveRecord::Base
has_many :taggings
has_many :events, :through => :taggings
has_many :users, :through => :taggings
end
class User < ActiveRecord::Base
# Virtual attribute for the unencrypted password
attr_accessor :password
has_many :events
has_many :posts
has_many :taggings
has_many :tags, :through => :taggings
end
class Event < ActiveRecord::Base
acts_as_versioned do
def self.included(base)
base.belongs_to :user
base.belongs_to :region
end
end
has_many :taggings
has_many :tags, :through => :taggings
has_many :posts
end
>> Tag.find(10).users
NoMethodError: undefined method `users'' for #<Tag:0x26f4d08
@attributes={"name"=>"rails",
"id"=>"10"}>
from
/opt/local/lib/ruby/gems/1.8/gems/activerecord-1.14.3/lib/active_record/base.rb:1792:in
`method_missing''
from (irb):1>> Tag.find(10).events
NoMethodError: undefined method `events'' for #<Tag:0x26f16e4
@attributes={"name"=>"rails",
"id"=>"10"}>
from
/opt/local/lib/ruby/gems/1.8/gems/activerecord-1.14.3/lib/active_record/base.rb:1792:in
`method_missing''
from (irb):2>> reload!
Reloading...
=> [ApplicationController, Tagging, Tag]>> Tag.find(10).events
#works fine now>> Tag.find(10).users
#works fine now
WTF!??!?!?!
Why can''t Tag use the associations?
--
Posted via http://www.ruby-forum.com/.
Jason Toy wrote:> I have this code that is using svn externals with rails EDGE working > fine for the past couple of months. A couple of days ago, this code > died. Even after deleting vendor/rails, this code doesnt work: > > class Tag < ActiveRecord::Base > has_many :taggings > has_many :events, :through => :taggings > has_many :users, :through => :taggings > end > > class User < ActiveRecord::Base > # Virtual attribute for the unencrypted password > attr_accessor :password > has_many :events > has_many :posts > has_many :taggings > has_many :tags, :through => :taggings > end > > class Event < ActiveRecord::Base > > acts_as_versioned do > def self.included(base) > base.belongs_to :user > base.belongs_to :region > end > end > has_many :taggings > has_many :tags, :through => :taggings > has_many :posts > end > >>> Tag.find(10).users > NoMethodError: undefined method `users'' for #<Tag:0x26f4d08 > @attributes={"name"=>"rails", "id"=>"10"}> > from > /opt/local/lib/ruby/gems/1.8/gems/activerecord-1.14.3/lib/active_record/base.rb:1792:in > `method_missing'' > from (irb):1 >>> Tag.find(10).events > NoMethodError: undefined method `events'' for #<Tag:0x26f16e4 > @attributes={"name"=>"rails", "id"=>"10"}> > from > /opt/local/lib/ruby/gems/1.8/gems/activerecord-1.14.3/lib/active_record/base.rb:1792:in > `method_missing'' > from (irb):2 >>> reload! > Reloading... > => [ApplicationController, Tagging, Tag] >>> Tag.find(10).events > #works fine now >>> Tag.find(10).users > #works fine now > > WTF!??!?!?! > > Why can''t Tag use the associations?You don''t have any belongs_to associations anywhere. Do you have foreign keys in your taggings table? It looks like you put together your models (and I suspect your schema as well) without really understanding how associations are supposed to work. Take a look at some of the examples on my blog, and read up on how this stuff works. These articles in particular should be helpful: http://blog.hasmanythrough.com/articles/2006/04/20/many-to-many-dance-off http://blog.hasmanythrough.com/articles/2006/02/28/association-goodness http://blog.hasmanythrough.com/articles/2006/03/01/association-goodness-2 http://blog.hasmanythrough.com/articles/2006/04/03/polymorphic-through Good luck! -- Josh Susser http://blog.hasmanythrough.com -- Posted via http://www.ruby-forum.com/.
Hi Josh, thanks for replying. I forgot to post the taggable table, so it seems like I have the correct relation. I had double checked your articles before, and I checked them again, they se accurate, I am sitll not sure what is wrong, do you have an idea? Thanks. I have foreign keys on the Taggings table: class Tagging < ActiveRecord::Base belongs_to :user belongs_to :tag belongs_to :event end Josh Susser wrote:> Jason Toy wrote: >> I have this code that is using svn externals with rails EDGE working >> fine for the past couple of months. A couple of days ago, this code >> died. Even after deleting vendor/rails, this code doesnt work: >> >> class Tag < ActiveRecord::Base >> has_many :taggings >> has_many :events, :through => :taggings >> has_many :users, :through => :taggings >> end >> >> class User < ActiveRecord::Base >> # Virtual attribute for the unencrypted password >> attr_accessor :password >> has_many :events >> has_many :posts >> has_many :taggings >> has_many :tags, :through => :taggings >> end >> >> class Event < ActiveRecord::Base >> >> acts_as_versioned do >> def self.included(base) >> base.belongs_to :user >> base.belongs_to :region >> end >> end >> has_many :taggings >> has_many :tags, :through => :taggings >> has_many :posts >> end >> >>>> Tag.find(10).users >> NoMethodError: undefined method `users'' for #<Tag:0x26f4d08 >> @attributes={"name"=>"rails", "id"=>"10"}> >> from >> /opt/local/lib/ruby/gems/1.8/gems/activerecord-1.14.3/lib/active_record/base.rb:1792:in >> `method_missing'' >> from (irb):1 >>>> Tag.find(10).events >> NoMethodError: undefined method `events'' for #<Tag:0x26f16e4 >> @attributes={"name"=>"rails", "id"=>"10"}> >> from >> /opt/local/lib/ruby/gems/1.8/gems/activerecord-1.14.3/lib/active_record/base.rb:1792:in >> `method_missing'' >> from (irb):2 >>>> reload! >> Reloading... >> => [ApplicationController, Tagging, Tag] >>>> Tag.find(10).events >> #works fine now >>>> Tag.find(10).users >> #works fine now >> >> WTF!??!?!?! >> >> Why can''t Tag use the associations? > > You don''t have any belongs_to associations anywhere. Do you have foreign > keys in your taggings table? It looks like you put together your models > (and I suspect your schema as well) without really understanding how > associations are supposed to work. Take a look at some of the examples > on my blog, and read up on how this stuff works. These articles in > particular should be helpful: > > http://blog.hasmanythrough.com/articles/2006/04/20/many-to-many-dance-off > http://blog.hasmanythrough.com/articles/2006/02/28/association-goodness > http://blog.hasmanythrough.com/articles/2006/03/01/association-goodness-2 > http://blog.hasmanythrough.com/articles/2006/04/03/polymorphic-through > > Good luck! > > -- > Josh Susser > http://blog.hasmanythrough.com-- Posted via http://www.ruby-forum.com/.