Hello First of all, if there are 2 models ... then i think you got it wrong ... assuming you have
class Book < ActiveRecord::Base
has_many :likes
has_one :book_expire
end
class BookExpire < ActiveRecord::Base
belongs_to :book
end
class Like < ActiveRecord::Base
belongs_to :book
end
Then you could add " , :counter_cache => true " to the belongs_to association
(if needed add a likes_count field in the Book table)
if you do that .., then you could do a very easy query like
@books = Book.joins(:book_expire).all.order(' likes_count ASC,
book_expires.end_at DESC') # and i would add a limit ()
have a look here : http://railscasts.com/episodes/23-counter-cache-column
(even the move uses rails 2.x ... the concept and syntax is still valid )
Alecslupu
On Feb 3, 2012, at 9:44 PM, Abhishek shukla wrote:
> Hello Friends,
>
> I have a rails application where requirement is that, I want to display books
> based on likes and expiry date..
>
> I am using the following query
>
> "select books.*, (select count(*) from likes where likes.book_id = books.id)
> as ct
> from books, book_expires where book_expires.book_id = books.id order by ct
> ASC, book_expires.end_at DESC"
>
> And the output I am getting is on the bases of count not end_date..
>
> Please let me know where I am getting wrong thanks...
>
>
> Thanks
> abhis
>
>
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