出现“ :: prompt”问题在select_year中，以start / end_year为单位 [英] Issue with ":prompt" in select_year with start/end_year

问题描述

使用此答案作为指导，我着手创建一个 select_year ，该日期从今天的年份开始，到100年前结束。但是我想添加一个：prompt ，以便下拉列表以 Year（年份）而不是当前年份开始。因此，我使用了以下内容：

Using this answer as a guide, I set out to create a select_year that started with today's year and ends 100 years ago. But I wanted to add a :prompt so that the drop down starts with "Year" instead of the current year. So I used the following:

<%= select_year(Date.today, {:prompt => "Year", :start_year => DateTime.now.year, :end_year => DateTime.now.year - 115}, {:field_name => 'Year', :id => 'Date.year'}) %>

这会导致年份下降，但提示显示的是当前年份而不是年份。但是，如果我单击下拉列表，它将显示年份作为选择当前年份的第一个选项。我怎样才能解决这个问题？我做错了什么？

This renders a drop down for year, but the prompt shows current year instead of "Year". If I click the drop down though, it shows "Year" as the first option with current year selected. How can I fix this? What did I do wrong?

更新：这是上面代码的HTML输出：

UPDATE: Here is the HTML output of the above code:

<select field_name="Year" id="Date.year" name="date[year]">
<option value="">Year</option>
<option selected="selected" value="2011">2011</option>

如何做到这一点，所以2011年不会自动 selected ？

How can I make it so 2011 isn't automatically "selected"?

推荐答案

解决方案很简单

    <%= select_year(0, {:prompt => "Year", 
                        :start_year => DateTime.now.year, 
                        :end_year => DateTime.now.year - 115}, 
                       {:field_name => 'Year', :id => 'Date.year'}) %>

如果默认值超出范围，我建议您先选择提示提示符的列表

I suppopse if default value is out of range you have first of the list selected which is prompt

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