Rails 将字符串数组转换为 Flash 的无序列表

Question

So flash notices are being displayed from a CMS we're using so when we flash the design/layout is pretty hard to get to. So anything that I flash will display in that section and the only thing I can really change is the styling. Unless I can do in the Layout > Application render flash unless this one page.

What I have is an array of strings that I'm trying to convert into an unordered list. So for example it's showing up like @fruit = ["Apple", "Banana", "Orange"] .

My thought was to simply do

@fruit.map(&:inspect).join("\n").delete('""')

With the hope of getting

• Apple
• Banana
• Orange

However since it's in the flash there's no discerning line break. If I inspect sure enough it's showing multiple lines but lumped within a text.

I even went in and did the following thinking it would work:

-flash.each do |type, msg|
 ul
  =content_tag :li, msg, id: "flash_#{type}"

But its actually not breaking the msg up into an unordered list, especially within the ul, and instead doing:

<ul></ul>
 <li id="flash_error">"Apple Banana Orange"</li>

So is there a way to convert an array of strings into an unordered list for a flash message?

Answer 1

flash lets you use primitive types ( string , array , hash , ...) but you need to handle that in the view, if you put an array in it you need to iterate that array.

@fruit = ["Apple", "Banana", "Orange"]
flash[:notice] = @fruit

(also, ul should be outside of flash.each )

ul
  - flash.each do |type, msg|
    - if msg.is_a? Array
      - msg.each do |a|
        = content_tag :li, a, id: "flash_#{type}"
    - else
      = content_tag :li, msg, id: "flash_#{type}"