Rails flash.now 具有任意密钥的哈希值？
所以我正在做一些基本的验证并尝试向闪存哈希添加任意密钥（你可以这样做吗？）
所以在我的控制器中我有这个...“previousaction”帖子到此页面。
if params[:home_value] == "Select One"
flash.now[:home_value] = "Please select a home value"
render "previousaction"
else
#set controller vars.. render this action as normal
end
在视图中：
<% if home_value %>
<h6 id="notice" style="color:red;padding-bottom:5px;"><%= home_value %></h6>
<%= label_tag "Estimated Home Value", "Estimated Home Value", :style => "color:red;"%><br/>
<% else %>
<%= label_tag "Estimated Home Value", "Estimated Home Value" %><br/>
<% end %>
但是在尝试加载控制器操作（第一次）时出现此错误：
未定义的局部变量或方法“home_value”
提示：）
对于戴夫：
在之前的操作/视图中，我使用 flash[:notice ]像这样：
if params[:zip_code].length != 5
flash.now[:notice] = "Invalid zipcode. Please enter your 5-digit zipcode"
render "firstpage"
else
然后在视图中
<% if notice %>
flash[:notice]是rails的特殊flash键吗？
So I'm doing some basic validation and trying to add an arbitrary key to the flash hash (you can do that right?)
So in my controller I have this... "previousaction" posts to this page.
if params[:home_value] == "Select One"
flash.now[:home_value] = "Please select a home value"
render "previousaction"
else
#set controller vars.. render this action as normal
end
And in the view:
<% if home_value %>
<h6 id="notice" style="color:red;padding-bottom:5px;"><%= home_value %></h6>
<%= label_tag "Estimated Home Value", "Estimated Home Value", :style => "color:red;"%><br/>
<% else %>
<%= label_tag "Estimated Home Value", "Estimated Home Value" %><br/>
<% end %>
But I get this error when trying to load the controller action (the first time):
undefined local variable or method `home_value'
Tips appreciated :)
For Dave:
In a previous action/view I use flash[:notice] like this:
if params[:zip_code].length != 5
flash.now[:notice] = "Invalid zipcode. Please enter your 5-digit zipcode"
render "firstpage"
else
and then in the view
<% if notice %>
Is flash[:notice] a special flash key for rails?
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评论（1）
home_value不会神奇地与flash关联，它只是被视为局部变量；尝试直接使用:home_value访问 flash 哈希。也就是说，使用任意密钥的目的是什么？
home_valuewon't magically be associated with theflash, it's just being treated as a local variable; try accessing the flash hash with:home_valuedirectly.That said, what's the purpose of using an arbitrary key?