添加自类模型轨道3

Question

我有3种型号：

Class Model1 

end 

Class Model2 

end 

Class Model3 

end 

我有这样的代码：

scope :created_between, lambda { |start_time, end_time| where(:created_at => (start_time...end_time)) } 

class << self 
## Class methods for calculating searches 
def created_today 
    today = Time.zone.now 
    created_between(today.beginning_of_day, today.end_of_day) 
end 

def created_yesterday 
    yesterday = Time.zone.now - 1.day 
    created_between(yesterday.beginning_of_day, yesterday.end_of_day) 
end 

def created_last_week 
    start_time = (Time.zone.now - 1.week).beginning_of_day 
    end_time = Time.zone.now 
    created_between(start_time, end_time) 
end 

def created_last_month 
    start_time = (Time.zone.now - 1.month).beginning_of_day 
    end_time = Time.zone.now 
    created_between(start_time, end_time) 
end 

def created_last_year 
    start_time = (Time.zone.now - 1.year).beginning_of_day 
    end_time = Time.zone.now 
    created_between(start_time, end_time) 
end 

末

我需要这个代码添加到3款，但我不不想在每个模型中重复代码。

我该怎么办？

非常感谢！

Answer 1

试试这个：

module CommonClassFunctions 

def self.included(base) 
    base.send :extend, ClassMethods 
end 

module ClassMethods 
    ## Class methods for calculating searches 
    def created_today 
    today = Time.zone.now 
    created_between(today.beginning_of_day, today.end_of_day) 
    end 

    def created_yesterday 
    yesterday = Time.zone.now - 1.day 
    created_between(yesterday.beginning_of_day, yesterday.end_of_day) 
    end 

    def created_last_week 
    start_time = (Time.zone.now - 1.week).beginning_of_day 
    end_time = Time.zone.now 
    created_between(start_time, end_time) 
    end 

    def created_last_month 
    start_time = (Time.zone.now - 1.month).beginning_of_day 
    end_time = Time.zone.now 
    created_between(start_time, end_time) 
    end 

    def created_last_year 
    start_time = (Time.zone.now - 1.year).beginning_of_day 
    end_time = Time.zone.now 
    created_between(start_time, end_time) 
    end 
    end 
end 

Class Model1 
    include CommonClassFunctions 
end 

Class Model2 
    include CommonClassFunctions 
end 

Class Model3 
    include CommonClassFunctions 
end 

Answer 2

您可以使用此方法定义模块，然后将其包含在3个模型中。

像：

module Searcheable 
    def created_today 
    . 
    . 
    . 
    . 
    . 
    end 
end 

然后在类：

class Model1 
    extend Searcheable 
end 

class Model2 
    extend Searcheable 
end 

class Model3 
    extend Searcheable 
end 

Answer 3

你可以继承做到这一点

class Model 
    class << self 
    def created_today 
     puts "created today from Model" 
    end 
    end 
end 

class Model1 < Model 

end 

class Model2 < Model 

end 

class Model3 < Model 

end 

Model1.created_today 
# output: created today from Model