用户选择操作后如何获取当前日期和时间 [英] How to get the current date and time after a user select action

问题描述

我花了一些时间学习Rails，现在我正在做一个演示项目.

I spent time learning Rails and now I'm working on a demo project.

我希望用户选择是否需要对护理请求_form进行即时护理.如果用户选择否"，则将要求用户从接下来的两个隐藏代码行中选择时间和日期，并保存start_time和start_date.如果用户选择是"，则我想在用户单击表单上的提交"按钮后输入start_time和start_date字段的当前时间和日期.

I want the user to select whether or not they need immediate care on a care request _form.  If the user selects "No" then the user will be asked to select a time and date from the next two hidden lines of code, saving start_time and start_date. If the user selects "Yes", I want to pass in the current time and date for the start_time and start_date fields after the user clicks the submit button on my form.

我知道我将使用if/else语句，隐藏函数和Time.now/DateTime.now方法，但是我对如何实现它们感到困惑.

I know I will use an if/else statement, a hidden function, and the Time.now/DateTime.now methods but I'm confused how to implement them.

    <div class="row">
    <div class="form-group">
      <label class="control-label">Is immediate care needed?</label>
      <select class="form-control edit">
        <option>Yes</option>
        <option>No</option>
      </select>
    </div>
  </div>


<div class="row">
  <div class="form-group">
    <label>Choose your start date.</label>
    <%= f.text_field :start_day, placeholder: "MM/DD/YY", class: "form-control" %>
  </div>
</div>


<div class="row">
  <div class="form-group">
    <label>Choose your start time.</label>
    <%= f.text_field :start_time, placeholder: "08:00 AM", class: " form-control" %>
  </div>
</div>

我查看了Stack Overflow，但没有发现类似的东西.

I looked at Stack Overflow but found nothing similar to this.

推荐答案

首先，您需要命名立即护理"选择字段，并提供选项值:

First, you need to name your "immediate care" select field, and supply values for options:

<select class="form-control edit" name="immediate_care">    
  <option value="yes">Yes</option>
  <option value="no">No</option>
</select>

然后，您需要检查选定的值并设置当前日期&时间值(如果值为"yes")(可能是控制器内部的before_filter):

Then, you need to check the selected value and set current date & time values if the value is "yes" (maybe a before_filter inside a controller):

if params[:immediate_care] == 'yes'
  current_time = Time.now
  params[:start_time] = current_time.strftime '%l:%m %p'
  params[:start_day] = current_time.strftime '%d/%m/%y'
end

请记住，这是一个简化的示例，因为您没有提供有关代码的更多详细信息.

Please keep in mind, that's a simplified example, since you did not provide more details about your code.

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