我有三个一组的单选按钮(对于测验的每一步)。如果选择的单选按钮是“视频”,我想显示“videoCreator”div。如果它是“excel”,“excelCreator”div等,这些div只是单选按钮下方的其他表单项,以允许用户输入更多信息。
我的问题是下面的coffeescript有效,除了它改变了所有的无线电形式。例如,假设第1步是视频,视频div显示。如果我将步骤2更改为excel单选按钮,excel div将显示所有步骤(无线电表单),包括第一个应该保留视频的步骤。我想我需要创建一个可变的,但我不确定。任何帮助将不胜感激。
Coffeescript
$(".excelCreator").hide()
$(".videoCreator").hide()
$(".mcCreator").hide()
$(".stepRadio").change ->
if @value is "video" and @checked
$(".videoCreator").show()
else if @value is "excel" and @checked
$(".excelCreator").show()
else if @value is "multiple_choice" and @checked
$(".mcCreator").show()
else
$(".excelCreator").hide()
$(".videoCreator").hide()
$(".mcCreator").hide()
这是带有单选按钮
的节目模板 <div>
<div>
<%= f.label :media_type, "Excel" %>
<%= f.radio_button :media_type, 'excel', :checked => true, class: 'icheck stepRadio' %>
</div>
<div>
<%= f.label :media_type, "Video" %>
<%= f.radio_button :media_type, 'video', class: 'icheck stepRadio' %>
</div>
<div>
<%= f.label :media_type, "Multiple Choice" %>
<%= f.radio_button :media_type, 'multiple_choice', class: 'icheck stepRadio' %>
</div>
</div>
以下是我想根据同一视图中的单选按钮显示的选项
<div class="excelCreator">
<%= f.label :link, "Excel Link" %>
<%= f.text_field :link, :style => "width: 98%;" %>
<%= f.label :answer, "Excel Answer (#)" %>
<%= f.text_field :answer, :style => "width: 98%;" %>
</div>
<div class="videoCreator">
<%= f.label :link, "Video Link" %>
<%= f.text_field :link, :style => "width: 98%;" %>
</div>
<div class="mcCreator">
<%= f.label :choice_one, "Choice One" %>
<%= f.text_field :choice_one, :style => "width: 98%;" %>
<%= f.label :choice_two, "Choice Two" %>
<%= f.text_field :choice_two, :style => "width: 98%;" %>
<%= f.label :choice_three, "Choice Three" %>
<%= f.text_field :choice_three, :style => "width: 98%;" %>
<%= f.label :choice_four, "Choice Four" %>
<%= f.text_field :choice_four, :style => "width: 98%;" %>
<%= f.label :answer, "MC Answer (#)" %>
<%= f.text_field :answer, :style => "width: 98%;" %>
</div>
这是一个为其中一个表单字段
输出的html示例 <div>
<label for="course_levels_attributes_0_steps_attributes_0_media_type">Excel</label>
<input checked="checked" class="icheck stepRadio" id="course_levels_attributes_0_steps_attributes_0_media_type_excel" name="course[levels_attributes][0][steps_attributes][0][media_type]" type="radio" value="excel" />
</div>
答案 0 :(得分:1)
我只需要hide
change
处理程序开头的所有三个,然后是show
需要显示的特定处理程序。像这样:
$(".stepRadio").change ->
# Hide all the extra `<div>`s
$(".excelCreator, .videoCreator, .mcCreator").hide()
# Show the one that we care about.
if @value is "video"
$(".videoCreator").show()
else if @value is "excel"
$(".excelCreator").show()
else if @value is "multiple_choice"
$(".mcCreator").show()
# This initializes things. Since you have `:checked => true`
# on the first radio button, `:checked` will always match one
# radio button.
$('.stepRadio:checked').change()
演示:http://jsfiddle.net/ambiguous/GVX2Z/
您的@checked
处理程序中不需要额外的change
测试,只会针对当前检查的单选按钮调用回调,因此检查@checked
只会添加不必要的噪声
如果您有多组单选按钮,那么最简单的方法是将单选按钮及其额外的<div>
包装在一个公共容器中:
<div class="container">
<!-- radio buttons -->
<!-- extra divs -->
</div>
$(".stepRadio").change ->
$container = $(@).closest('.container')
$container.find(".excelCreator, .videoCreator, .mcCreator").hide()
if @value is "video"
$container.find(".videoCreator").show()
else if @value is "excel"
$container.find(".excelCreator").show()
else if @value is "multiple_choice"
$container.find(".mcCreator").show()