查詢執行在N + 1次

Question

在我的申請我使用

phy = Physician.find(:all, :include => {:clinician_affiliations => :provider_organization}, :with_disabled => true).select{|physician| not physician.provider_organizations.blank? }.collect{|enum| [enum.display_name_schedule, enum.id]} 

代碼。當我運行代碼時，它執行N + 1次。我確信這是在rails中N + 1查詢的問題。我需要用N + 1來簡化這個代碼。

注意：clinicalician_affiliation屬於provider_organization。 （我正在使用Rails 2.3）

class Clinician 
..... 
has_many :provider_organizations, :through => :clinician_affiliations 
... 
end 

來自DB Physician和Provider_organizations是派對錶類型。

類醫師<臨牀醫生

Answer 1

我認爲這應該工作

Physician.find(:all, :include => :provider_organizations)