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我正在尝试关注此要点,以显示Crud Rails应用程序https://gist.github.com/suryart/7418454的Bootstrap警报。其内容有代码:Rails使用助手显示Bootstrap警报
application_helper.rb:
模块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>
问题是我没有看到任何的显示消息。
我想,也许因为要旨显示返回零,也许我需要返回。每个迭代的内容,所以我做了这样的事情在我的帮助返回的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,当你查看打印语句的输出它显示我的页面中输入HTML,结束这实际上是我需要的HTML:
<div class="alert alert-info fade in"><button class="close" data-dismiss="alert">x</button>Signed in successfully.</div>
我如何获得这这样的工作,它只返回最后一部分而不是整个页面?