在一周的特定日期显示WOD

Im creating an application where an user can see what workout of the day a trainer will tell him to do. This workout is going to be in the homepage of the app.

我正在创建一个应用程序，用户可以看到培训师告诉他要做的当天锻炼。这项训练将在应用程序的主页上进行。

The trainer is going to upload the wods weekly, i want to show just one wod per day.

培训师每周上传一次，我想每天只展示一次。

I thought that if i gave the WOD model an integer attribute called wday, so i can do the logic if Wod.wday == Date.today.cwday i would achieve this. This is not working at all, im getting an error at my static_pages controller.

我认为，如果我给WOD模型一个名为wday的整数属性，那么我可以做逻辑，如果Wod.wday == Date.today.cwday我会实现这一点。这根本不起作用，我的static_pages控制器出错了。

Heres the code:

继承人代码：

Wod model:

Wod型号：

class Wod < ApplicationRecord
belongs_to :user

  def this_day
    Date.today.cwday == self.wday
  end

end

User model:

用户模型：

class User < ApplicationRecord
has_many :wods   

 def feed
  Wod.this_day
 end

Static pages controller:

静态页面控制器：

class StaticPagesController < ApplicationController
  def home
      if logged_in?
        @wod = current_user.wods.build
        @feed_items = current_user.feed
    end
  end

  def contact
  end

  def about
  end
end

Im getting the following error:

我得到以下错误：

NoMethodError in StaticPagesController#home undefined method `this_day' for #<Class:0x007f5870c1e7b8> Did you mean? third

StaticPagesController中的NoMethodError #home undefined方法`this_day'for＃你的意思是？第三：0x007f5870c1e7b8>

I would like to know how to get this done, any help would be appreciated!

我想知道如何完成这项工作，任何帮助将不胜感激！

BTW: It works perfectly if i do in the user model Wod.all, but i dont want this

顺便说一句：如果我在用户模型Wod.all中工作，它的工作完美，但我不想要这个

2 个解决方案

#1

NoMethodError in StaticPagesController#home undefined method `this_day' for #<Class:0x007f5870c1e7b8>

StaticPagesController中的NoMethodError #home undefined方法`this_day'for＃：0x007f5870c1e7b8>

The problem lies here Wod.this_day. If you want to call this_day on WOD then you need to add it as a class method.

问题在于Wod.this_day。如果你想在WOD上调用this_day，那么你需要将它添加为类方法。

Change

更改

def this_day
  Date.today.cwday == self.wday
end

至

def self.this_day
  Date.today.cwday == wday
end

Alternate solution is to use scopes.

替代解决方案是使用范围。

class Wod < ApplicationRecord
  belongs_to :user
  scope :this_day, -> { where(wday: Date.today.cwday) }
end

#2

I fixed it by changing the method this_day to:

我通过将this_day方法更改为：

def self.this_day
  where("wday = ?", Date.today.cwday)
end

#1