Date_field_tag，我如何设置默认日期?[Ruby on rails]

Question

我想设置一个默认日期，例如实际日期，我如何设置它?

<%= date_field_tag(:datetime_ida, value = nil, options = {})%>

还有，我如何在组合框中设置默认值

<%= select_tag :children_quantity, options_for_select([['0 Children', 0], ['1 Children', 1], ['2 Children', 2], ['3 Children', 3], ['4 Children', 4], ['5 Children', 5]], 1) %>

顺便说一下，date_field_tag和date_field之间的区别是什么?

Answer 1

试一试:

  <%= date_field_tag(:datetime_ida, Date.today)%>

传递默认日期作为第二个参数。

   you correctly set the default value of combo box as shown in your question.

Answer 2

你应该使用date_select:default