ruby-on-rails - Ruby 将时间转换为整数，然后再返回。不断增加一个小时

问题描述

在我的 rails 应用程序中，我试图将时间转换为整数，然后将其转换回来。但是，当我这样做时，它会切换时区，把我搞砸了。

这是我的开始和停止时间表：

[8] pry(#<Campaign>)> random_schedule[0]
=> 2018-10-05 21:10:00 -0600
[9] pry(#<Campaign>)> random_schedule[1]
=> 2018-10-05 21:20:00 -0600

现在我要做的是在这些时间之间选择一个随机时间。我这样做是为了：

start = random_schedule[0].to_i
stop = random_schedule[1].to_i

selected_time = rand(start..stop)
selected_schedule = Time.at(selected_time)

然而，这会变成这样：

[1] pry(#<Campaign>)> selected_schedule
=> 2018-10-05 22:16:17 -0500

所以现在它会提前一个小时排队，尽管它应该在几分钟内发生。

我在这里做错了什么？的.zone, selected_schedule,random_schedule[0]和random_schedule[1]都显示为，CDT但一个是 -0500，另一个是 0600，所以显然有些不对劲。

编辑

所以这是我看到的一个更深层次的问题。如果我查看模型，我可以看到创建/更新时间使用 CDT，但其他字段使用 CST。这怎么可能？

=> #<campaign_schedule:0x00007fa8de3ea4e8
 id: 8,
 campaign_id: 8,
 start_date: Fri, 05 Oct 2018,
 start_time: Sat, 01 Jan 2000 22:05:00 CST -06:00,
 stop_date: Fri, 05 Oct 2018,
 stop_time: Sat, 01 Jan 2000 22:10:00 CST -06:00,
 created_at: Fri, 05 Oct 2018 21:49:46 CDT -05:00,
 updated_at: Fri, 05 Oct 2018 21:49:46 CDT -05:00>

我的表格如下所示：

<%= campaign_schedule.date_field :start_date, as: :date, value: campaign_schedule.object.try(:strftime,"%m/%d/%Y"), class: 'form-control' %>

当它保存时，它会保存为 CST，这对我来说是一个小时的事情。

所以在一个新表单上，我在控制器中有这个，它构建了活动：

  # app/controllers/campaigns_controller.rb
  # GET /campaigns/new
  def new
    @campaign = Campaign.new
    @campaign.build_campaign_schedule.campaign_schedule_hours.build
  end

在活动表格上，它是这样的：

<%= form_with(model: @campaign, local: true, html: {role: "form", id: "campaign_form"}) do |form| %>
<div class="modal-body">
    <div class="tabs-container">
        <ul class="nav nav-tabs">
            <li class="active"><a data-toggle="tab" href="#basics"><i class="fas fa-cogs"></i> Basics</a></li>
            <li class=""><a data-toggle="tab" href="#schedule"><i class="fas fa-calendar-alt"></i> Schedule</a></li>
        </ul>
        <div class="tab-content">
            <div id="basics" class="tab-pane active">
                <div class="panel-body">
                    <%= form.fields_for :campaign_schedule do |campaign_schedule| %>
                    <div class="form-group row">
                        <div class="col-sm-5">
                            <%= label_tag "What day and time should the campaign start?" %>
                        </div>
                        <div class="col-sm-3">
                            <%= campaign_schedule.date_field :start_date, as: :date, value: Time.now.strftime("%m/%d/%Y"), class: 'form-control' %>
                        </div>
                        <div class="col-sm-3">
                            <%= campaign_schedule.time_field :start_time, as: :time, value: Time.now.strftime( "%I:%M %p"), class: "form-control" %>
                        </div>
                    </div>
                </div>
            </div>
        </div>
    </div>
</div>
<% end %>

当它保存时，这是控制器中的保存操作：

  # POST /campaigns
  # POST /campaigns.json
  def create
    @campaign = Campaign.new(campaign_params)

    respond_to do |format|
      if @campaign.save
        review_campaign_schedule
        format.html { redirect_back fallback_location: campaigns_path, notice: 'Campaign was successfully created.' }
        format.json { render :show, status: :created, location: @campaign }
      else
        format.html { render :new }
        format.json { render json: @campaign.errors, status: :unprocessable_entity }
      end
    end
  end

但是，当我返回并调用该 Campaign.start_date 时，它是 CST 而不是 CDT。即使我直接从 Rails 控制台执行此操作，它也使用 CST 而不是 CDT。是建筑商的事吗？看一下这个：

[8] pry(#<CampaignsController>)> @campaign = Campaign.new
=> #<Campaign:0x00007fa8ef5bbab8 id: nil, name: nil, completed_date: nil, status: "Scheduled", created_at: nil, updated_at: nil>
[9] pry(#<CampaignsController>)> @campaign.build_campaign_schedule.campaign_schedule_hours.build    
=> #<CampaignscheduleHour:0x00007fa8e6377be8 id: nil, campaign_schedule_id: nil, day: nil, start_hours: nil, stop_hours: nil, created_at: nil, updated_at: nil>
[11] pry(#<CampaignsController>)> @campaign.campaign_schedule
=> #<Campaignschedule:0x00007fa8ef5b07d0 id: nil, campaign_id: nil, start_date: nil, start_time: nil, stop_date: nil, stop_time: nil, created_at: nil, updated_at: nil>
[12] pry(#<CampaignsController>)> @campaign.campaign_schedule.start_time = "22:30"
=> "22:30"
[13] pry(#<CampaignsController>)> @campaign.campaign_schedule.start_time
=> Sat, 01 Jan 2000 22:30:00 CST -06:00

标签： ruby-on-railsdatetime

ruby-on-rails - Ruby 将时间转换为整数，然后再返回。不断增加一个小时

问题描述

解决方案

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