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我正在嘗試關注此要點,以顯示Crud Rails應用程序https://gist.github.com/suryart/7418454的Bootstrap警報。其內容有代碼:Rails使用助手顯示Bootstrap警報
application_helper.rb:
模塊ApplicationHelper
def bootstrap_class_for flash_type
{ success: "alert-success", error: "alert-danger", alert: "alert-warning", notice: "alert-info" }[flash_type] || flash_type.to_s
end
def flash_messages(opts = {})
flash.each do |msg_type, message|
concat(content_tag(:div, message, class: "alert #{bootstrap_class_for(msg_type)} fade in") do
concat content_tag(:button, 'x', class: "close", data: { dismiss: 'alert' })
concat message
end)
end
nil
end
application.html.erb
<body>
<div class="container">
<%= flash_messages %>
<%= yield %>
</div><!-- /container -->
</body>
問題是我沒有看到任何的顯示消息。
我想,也許因爲要旨顯示返回零,也許我需要返回。每個迭代的內容,所以我做了這樣的事情在我的幫助返回的HTML:
def flash_messages
@flash_msg = ""
flash.each do |msg_type, message|
@flash_msg = concat(content_tag(:div, message, class: "alert #{bootstrap_class_for(msg_type)} fade in") do
concat content_tag(:button, 'x', class: "close", data: { dismiss: 'alert' })
concat message
end)
puts "@flash_msg: #{@flash_msg}"
end
@flash_msg
end
但是,當你查看打印語句的輸出它顯示我的頁面中輸入HTML,結束這實際上是我需要的HTML:
<div class="alert alert-info fade in"><button class="close" data-dismiss="alert">x</button>Signed in successfully.</div>
我如何獲得這這樣的工作,它只返回最後一部分而不是整個頁面?