I may be overlooking something, but it seems to me that it is a
problem if with this code...
Class Blog < ActiveRecord::Base
named_scope :unseen, :conditions => "displayed IS NULL"
end
this test fails...
it "should give a list of unseen entries" do
Blog.expects :unseen
b = Blog.new
b.unseen
end
given that the docs say about named_scope:
"Adds a class method for retrieving and querying objects. A scope
represents a narrowing of a database query, such as :conditions =>
{:color => :red}, :select => ‘shirts.*’, :include
=> :washing_instructions.
class Shirt < ActiveRecord::Base
named_scope :red, :conditions => {:color => ''red''}
named_scope :dry_clean_only, :joins
=> :washing_instructions, :conditions =>
[''washing_instructions.dry_clean_only = ?'', true]
end
The above calls to named_scope define class methods Shirt.red and
Shirt.dry_clean_only. Shirt.red, in effect, represents the query
Shirt.find(:all, :conditions => {:color => ‘red’})."
Am I missing something?
Thanks,
Tom
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On Thu, Jan 15, 2009 at 11:21 AM, Tom M <thomas.macklin-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org> wrote:> > I may be overlooking something, but it seems to me that it is a > problem if with this code... > > Class Blog < ActiveRecord::Base > named_scope :unseen, :conditions => "displayed IS NULL" > end > > this test fails... > > it "should give a list of unseen entries" do > Blog.expects :unseen > b = Blog.new > b.unseen > end > > I don''t know if this will help or not, but the little I''ve used namedscopes, I''ve used them as class methods, not as instance methods, i.e. Blog.unseen not b.unseen. --wpd --~--~---------~--~----~------------~-------~--~----~ 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 -~----------~----~----~----~------~----~------~--~---
Patrick,
Thanks... I checked again and the example I posted was a bit off of my
real example, which uses associations and scopes. According to the
docs:
All \scopes are available as class methods on the ActiveRecord::Base
descendent upon which the \scopes were defined. But they are also
available to has_many associations. If,
class Person < ActiveRecord::Base
has_many :shirts
end
then elton.shirts.red.dry_clean_only will return all of Elton’s red,
dry clean only shirts.
So a better example would be:
b = Blog.first
b.entries.unseen
I guess in this case, the method :unseen is bound to the set returned
via the association, and not the class itself?
Tom
On Jan 15, 11:52 am, Patrick Doyle
<wpds...-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
wrote:> On Thu, Jan 15, 2009 at 11:21 AM, Tom M
<thomas.mack...-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org> wrote:
>
> > I may be overlooking something, but it seems to me that it is a
> > problem if with this code...
>
> > Class Blog < ActiveRecord::Base
> > named_scope :unseen, :conditions => "displayed IS NULL"
> > end
>
> > this test fails...
>
> > it "should give a list of unseen entries" do
> > Blog.expects :unseen
> > b = Blog.new
> > b.unseen
> > end
>
> > I don''t know if this will help or not, but the little
I''ve used named
>
> scopes, I''ve used them as class methods, not as instance methods,
i.e.
> Blog.unseen not b.unseen.
>
> --wpd
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On Thu, Jan 15, 2009 at 1:29 PM, Tom M <thomas.macklin-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org> wrote:> > Patrick, > > Thanks... I checked again and the example I posted was a bit off of my > real example, which uses associations and scopes. According to the > docs: > > All \scopes are available as class methods on the ActiveRecord::Base > descendent upon which the \scopes were defined. But they are also > available to has_many associations. If, > class Person < ActiveRecord::Base > has_many :shirts > end > then elton.shirts.red.dry_clean_only will return all of Elton''s red, > dry clean only shirts. > > > So a better example would be: > b = Blog.first > b.entries.unseen > > I guess in this case, the method :unseen is bound to the set returned > via the association, and not the class itself? > > I''m not too sure what you mean by that. As I''ve used named scopes, I havebeen confused by thinking that entries.unseen was an array such as is returned by #find, when, it seems, it is a piece of RoR magic that looks more like the model. I wonder if b.entries.unseen.all or b.entries.unseen.first might do what you need it to. (Between you and me, I''m hoping that somebody who knows what (s)he is talking about chimes in here pretty soon, as this is already out of my depth. :-)) --wpd --~--~---------~--~----~------------~-------~--~----~ 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 -~----------~----~----~----~------~----~------~--~---
Well, I guess I/we are on our own. I''ll try to dig a bit deeper and see if I can find out just what''s going on w/ those associations. On Jan 15, 1:48 pm, Patrick Doyle <wpds...-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org> wrote:> On Thu, Jan 15, 2009 at 1:29 PM, Tom M <thomas.mack...-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org> wrote: > > > Patrick, > > > Thanks... I checked again and the example I posted was a bit off of my > > real example, which uses associations and scopes. According to the > > docs: > > > All \scopes are available as class methods on the ActiveRecord::Base > > descendent upon which the \scopes were defined. But they are also > > available to has_many associations. If, > > class Person < ActiveRecord::Base > > has_many :shirts > > end > > then elton.shirts.red.dry_clean_only will return all of Elton''s red, > > dry clean only shirts. > > > So a better example would be: > > b = Blog.first > > b.entries.unseen > > > I guess in this case, the method :unseen is bound to the set returned > > via the association, and not the class itself? > > > I''m not too sure what you mean by that. As I''ve used named scopes, I have > > been confused by thinking that entries.unseen was an array such as is > returned by #find, when, it seems, it is a piece of RoR magic that looks > more like the model. I wonder if b.entries.unseen.all or > b.entries.unseen.first might do what you need it to. > > (Between you and me, I''m hoping that somebody who knows what (s)he is > talking about chimes in here pretty soon, as this is already out of my > depth. :-)) > > --wpd--~--~---------~--~----~------------~-------~--~----~ 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 -~----------~----~----~----~------~----~------~--~---