Question

我试图访问＆＃34;客户＆＃34;今天创建的记录。有点像：

@customersToday = User.where("created_at >= ?", Date.today,  user_type: 'Customer').count

如何在单个查询中执行此操作（可行）？

Answer 1

@customersToday = User.where("created_at >= ? and user_type = ?", Date.today, 'Customer').count

Answer 2

您应该在单个查询中运行，但您可以通过创建几个范围来简化它

class User < ActiveRecord::Base
  scope :today, -> { where ["created_at >= ?", Date.today] }
  scope :customers, -> { where user_type: 'Customer' }
end

现在你可以运行

了

User.customers.today.count

Rails：访问满足两个条件的记录

2 个答案: