ruby-on-rails – 复杂范围,Rails 3
发布时间:2020-12-17 03:35:07 所属栏目:百科 来源:网络整理
导读:所以我正在构建一个匹配用户的应用程序.用户模型有3个属性(无论如何都与我的问题相关:性别:字符串,looking_for_men:布尔值,looking_for_women:布尔值. 目前我的模型中有一个方法如下: def browse if self.looking_for_men == true self.looking_for_wom
所以我正在构建一个匹配用户的应用程序.用户模型有3个属性(无论如何都与我的问题相关:性别:字符串,looking_for_men:布尔值,looking_for_women:布尔值.
目前我的模型中有一个方法如下: def browse if self.looking_for_men == true && self.looking_for_women == true if self.sex == "Male" User.where("looking_for_men = ?",true) elsif self.sex == "Female" User.where("looking_for_women = ?",true) end elsif self.sex == "Male" && self.looking_for_men == true User.where("looking_for_men = ? AND sex = ?",true,"Male") elsif self.sex == "Female" && self.looking_for_women == true User.where("looking_for_women = ? AND sex = ?","Female") else if self.sex == "Male" User.where("looking_for_men = ? AND sex = ?","Female") elsif self.sex == "Female" User.where("looking_for_women = ? AND sex = ?","Male") end end end 你可以说,这非常混乱.无论如何要清理它并将它变成一个范围,所以例如我说我是一个男性用户,我正在寻找女性,它只返回正在寻找男性的女性,当我这样做一个查询时: @users = User.all.browse 解决方法
我只是做下面的代码,使其更具可读性.但不知何故,我对这个解决方案并不完全满意.还是很多代码:
class User < ActiveRecord::Base scope :male,where(:gender => "Male") scope :female,where(:gender => "Female") scope :looking_for_men,where(:looking_for_men => true) scope :looking_for_women,where(:looking_for_women => true) def browse @women = @men = [] @women = self.interested_females if self.looking_for_women @men = self.interested_males if self.looking_for_men @result = @women.concat(@men) @result.delete(self) #removes the user itself from the result-set return @result end def interested_females return User.female.looking_for_men if self.male? return User.female.looking_for_women if self.female? end def interested_males return User.male.looking_for_men if self.male? return User.male.looking_for_women if self.female? end def male? return (self.gender == "Male") end def female? return (self.gender == "Female") end end (编辑:李大同) 【声明】本站内容均来自网络,其相关言论仅代表作者个人观点,不代表本站立场。若无意侵犯到您的权利,请及时与联系站长删除相关内容! |