多个范围轨

Question

class Anketum < ActiveRecord::Base 
    has_one :user 

    class << self 
    def search(params) 
     self.scope :h, :conditions => {:height => params[:height]} 
     #scope :w, :conditions => {:width => params[:width]} 
     self.h if params[:height] 
    end 

    end 
end 

我需要创建多个范围取决于PARAMS [：XXX]目前

Answer 1

通过您的代码示例来看，你一路过来工程这样的：

# app/models/anketum.rb 
class Anketum < ActiveRecord::Base 
end 

# app/controller/some_controller.rb 
def search 
    @results = Anketum.scoped 
    [:width, :height, :any, :other, :searchable, :attribute].each do |key| 
    @results.where(key => params[key]) if params[key].present? 
    end 
end 

你顺便说一下，模型不应该访问params散列。