Question

我将ScheduleDay模型作为;

 => #<ActiveRecord::Relation [#<ScheduleDay id: 1, from: "2017-01-21 00:00:00", to: "2017-01-30 00:00:00", weekday: 100, weekend: 200, weekly: 90, available: true, check_in: "09:00", check_out: "18:00", min_stay: 2, sevendays: false, check_in_day: nil, created_at: "2017-01-14 11:25:18", updated_at: "2017-01-14 11:27:00">, #<ScheduleDay id: 2, from: "2017-02-05 00:00:00", to: "2017-02-15 00:00:00", weekday: 150, weekend: 200, weekly: 140, available: nil, check_in: "09:00", check_out: "18:00", min_stay: 3, sevendays: false, check_in_day: nil,  created_at: "2017-01-14 15:53:21", updated_at: "2017-01-14 15:54:43">, #<ScheduleDay id: 3, from: "2017-03-15 00:00:00", to: "2017-06-15 00:00:00", weekday: nil, weekend: nil, weekly: nil, available: false, check_in: nil, check_out: nil, min_stay: 1, sevendays: false, check_in_day: nil, created_at: "2017-01-14 15:56:01", updated_at: "2017-01-14 15:56:57">, #<ScheduleDay id: 4, from: "2017-08-05 00:00:00", to: "2017-09-30 00:00:00", weekday: 500, weekend: 500, weekly: 500, available: true, check_in: "09:00", check_out: "18:00", min_stay: 7, sevendays: true, check_in_day: "Saturday", boat_id: nil, created_at: "2017-01-14 16:01:00", updated_at: "2017-01-14 16:02:10">]>

我有另一个日期范围，我想在ScheduleDay表中循环我的日期范围，如果找到记录，则获取一些数据。如果没有找到，那么也获取数据。我尝试了不同的方式，但我正在寻找红宝石中最有效的方法。

    first = Date.parse("05.2.2017")
    last = (Date.parse("16.2.2017"))

    schedules = ScheduleDay.where(from: Date.today..(last+1.day))

    dates = []


    (first..last).each do |date|
        flag = 0    
        catch :date_found do
            schedules.each do |s|   
                (s.from.to_date..s.to.to_date).each do |d|
                    puts date
                    puts d

                    if date == d
                        flag += 1
                        puts 'found'
                        throw :date_found
                    end

                end

            end
            if flag == 0
                puts 'date not found'
            end 
        end

    end

这是我到目前为止所尝试的。但问题是，如果找不到，我无法访问记录。如果我采取;

if flag == 0
   puts 'date not found'
end

在schedules.each...循环内，然后为ScheduleDay中的每条记录打印未找到。我想循环遍历所有ScheduleDay记录，如果没有找到，则获取一些数据。

修改

我有用户保存的数据库记录。用户可以通过选择日期范围和定价来自定义一年中的任何日期。我也问用户群定价。

所以，假设用户输入了15.01.2017＆amp; 21.01.2017自定义价格：100和基本价格200（如果在数据库日期范围内找不到日期，将使用基本价格）。

我想返回二月份的json数组。所以我需要;

01.01.2017 -> custom price exists? if not get base price
02.01.2017 -> custom price exists? if not get base price
...
15.01.2017 -> yes! custom price exists get custom price
16.01.2017 -> yes! custom price exists get custom price
17.01.2017 -> yes! custom price exists get custom price
18.01.2017 -> yes! custom price exists get custom price
...
21.01.2017 -> yes! custom price exists get custom price
...
31.01.2017 -> custom price exists? if not get base price

然后创建json

EDIT2

如果我使用该怎么办;

first = Date.parse("05.2.2017")
last =  Date.parse("16.2.2017")

(first..last).each do |date|
            schedules.each do |s|   
                d2 = (s.from.to_date..s.to.to_date)
                puts d2 === date
                puts d2
                puts date                       
            end
        end

===检查日期是否在范围内。

Rails循环遍历日期范围的有效方法

0 个答案: