我想根据选择框中的选择渲染部分。这看起来微不足道,但我找不到一个例子。
非常感谢所有帮助。
问候
答案 0 :(得分:2)
如果您只是尝试在表单提交的页面上呈现部分内容,
<%= render :partial => params[:your_selectbox_value_matching_the_partial_you_want] %>
所以,如果你有一个像
这样的选择框<select name='the_partial'>
<input value="partial1">Some Partial</input>
<input value="partial2">Another Partial</input>
</select>
你需要渲染
<%= render :partial => params[:the_partial] %>
假设您的视图文件夹中有_partial1.html.erb和partial2.html.erb
答案 1 :(得分:1)
我会从这样的事情开始:
app/views/_layout_selector.html.erb:
<form action="<%= request.request_uri -%>">
<select name='layout'>
<input value="blue">Blue</input>
<input value="pink">Pink</input>
<input value="green">Green</input>
</select>
</form>
app/views/layouts/blue.html.erb:
<html>
...
<%= render :partial => '/layout_selector' %>
...
</html>
(/app/views/layouts/pink.html.erb and green.html.erb similar)
app/controllers/application.rb:
class ApplicationController < ActionController::Base
DEFAULT_LAYOUT = 'blue'
layout :pick_layout
...
private
def pick_layout
params[:layout] || DEFAULT
end
end