在Rails 5中使用：date数据类型时，如何在下拉菜单中扩展可用年份的范围？

I am writing a personal genealogy app with Ruby on Rails 5, and am using the :date datatype for entering birth/death dates. This results in a dropdown menu for each element (year/month/day) of a date. For the year, the menu defaults to a range of five years in the past to five years in the future (so for 2017, the range is from 2012 to 2022). But I need to have a much larger range to cover years going back multiple centuries. How can I define a specific range of years I want to be available in the dropdown menu?

我正在使用Ruby on Rails 5编写一个个人族谱应用程序，并使用：date数据类型输入出生/死亡日期。这导致日期的每个元素（年/月/日）的下拉菜单。对于这一年，菜单默认为过去五年至未来五年（因此2017年的范围是2012年至2022年）。但我需要有更大的范围来覆盖多个世纪以来的岁月。如何在下拉菜单中定义我想要的特定年份范围？

Here's an excerpt from my schema.rb file (other fields deleted for brevity):

这是我的schema.rb文件的摘录（为简洁起见，删除了其他字段）：

create_table "people", force: :cascade do |t|
  t.date "birth_date"
  t.date "death_date"
end

And here's and excerpt from my view file (again, other fields deleted for brevity):

这里和我的视图文件摘录（再次，为简洁起见删除了其他字段）：

<div class="booyah-box col-10 offset-1">

  <h1>Edit Your Person Details</h1>
  <%= simple_form_for @person do |f| %>

    <%= f.input :birth_date %>
    <%= f.input :death_date %>

    <%= f.submit 'Update', class: 'btn btn-primary' %>
  <% end %>

</div>

I should also add I need a way to have a "no choice"-type option, such as for those still living, since they wouldn't have a death date

我还应该补充一点，我需要一种方法来获得“无选择”类型的选项，例如对于那些仍然生活的人，因为他们没有死亡日期

I've searched on * and haven't found an applicable answer, but if there's already one here, please point me to it. Thanks in advance for your help.

我在*上搜索过但没有找到合适的答案，但是如果已经有一个答案，请指点我。在此先感谢您的帮助。

1 个解决方案

#1

You can specify the start_year and end_year in the date input within your view; for example:

您可以在视图中的日期输入中指定start_year和end_year;例如：

<div class="booyah-box col-10 offset-1">

  <h1>Edit Your Person Details</h1>
  <%= simple_form_for @person do |f| %>

    <%= f.input :birth_date, start_year: Time.now.year - 10, end_year: Time.now.year + 10 %>
    <%= f.input :death_date, start_year: Time.now.year - 10, end_year: Time.now.year + 10, prompt: "-" %>

    <%= f.submit 'Update', class: 'btn btn-primary' %>
  <% end %>

</div>

In the example I added 10 years from current date and 10 years after current date, but you can use any range you need.

在示例中，我从当前日期和当前日期后10年添加了10年，但您可以使用您需要的任何范围。

#1