Ruby-on-rails Rails - 设计 - 登录时出现错误消息？
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Rails - Devise - Error messages when signing in?
提问by Frexuz
How can I make f.error_messageswork here, or should I use flashes?
If so, what should override in the sessions_controller?
我怎样才能让f.error_messages在这里工作，或者我应该使用闪光灯？
如果是这样，应该在 session_controller 中覆盖什么？
<h2>Create an account</h2>
<% form_for resource_name, resource, :url => registration_path(resource_name) do |f| %>
<%= f.error_messages %>
<p>
<%= f.label :email %><br />
<%= f.text_field :email, :class => :big %>
</p>
<p>
<%= f.label :password %><br />
<%= f.password_field :password, :class => :big %>
</p>
<p>
<%= f.label :password_confirmation %><br />
<%= f.password_field :password_confirmation, :class => :big %>
</p>
<p><%= f.submit "Create", :class => :submit %></p>
<% end %>
PS. f.error_messagesfor Creating an account works totally fine.
附注。用于创建帐户的f.error_messages完全正常。
采纳答案by typeoneerror
Admittedly, a bit hacky, but I'm using this helper (app/helpers/devise_helper.rb) to grab flashes and use those if set then default to resource.errors.
诚然，有点hacky，但我正在使用这个助手（app/helpers/devise_helper.rb）来抓取闪光灯并使用那些如果设置然后默认为resource.errors.
module DeviseHelper
def devise_error_messages!
flash_alerts = []
error_key = 'errors.messages.not_saved'
if !flash.empty?
flash_alerts.push(flash[:error]) if flash[:error]
flash_alerts.push(flash[:alert]) if flash[:alert]
flash_alerts.push(flash[:notice]) if flash[:notice]
error_key = 'devise.failure.invalid'
end
return "" if resource.errors.empty? && flash_alerts.empty?
errors = resource.errors.empty? ? flash_alerts : resource.errors.full_messages
messages = errors.map { |msg| content_tag(:li, msg) }.join
sentence = I18n.t(error_key, :count => errors.count,
:resource => resource.class.model_name.human.downcase)
html = <<-HTML
<div id="error_explanation">
<h2>#{sentence}</h2>
<ul>#{messages}</ul>
</div>
HTML
html.html_safe
end
end
回答by ffoeg
try putting these in your layout:
尝试将这些放在您的布局中：
<%= content_tag(:div, flash[:error], :id => "flash_error") if flash[:error] %>
<%= content_tag(:div, flash[:notice], :id => "flash_notice") if flash[:notice] %>
<%= content_tag(:div, flash[:alert], :id => "flash_alert") if flash[:alert] %>
Login action in Devise sets flash messages, not model Errors.
Devise 中的登录操作会设置闪现消息，而不是模型错误。
回答by Carl Edwards
Despite the age of this post I wanted to share a solution to help people such as myself who had trouble when they began using Devise. To keep things DRY I just ended up inserting this code in my application.html.erbfile:
尽管这篇文章已经很长了，但我想分享一个解决方案来帮助像我这样在开始使用 Devise 时遇到问题的人。为了保持干燥，我最终在我的application.html.erb文件中插入了这段代码：
<body>
<% flash.each do |key, value| %>
<div class="flash <%= key %>"><%= value %></div>
<% end %>
<%= yield %>
</body>
回答by Sachin
This shall also do
这也应该做
<% flash.each do |name, msg| %>
<%= content_tag :div, msg, id: "flash_#{name}" %>
<% end %>
回答by gilcierweb
Create a helper
创建帮手
# app/helpers/application_helper.rb
module ApplicationHelper
def flash_class(level)
case level
when 'info' then "alert alert-info"
when 'notice','success' then "alert alert-success"
when 'error' then "alert alert-danger"
when 'alert' then "alert alert-warning"
end
end
end
#view
<% flash.each do |key, value| %>
<div class="<%= flash_class(key) %> fade in">
<a href="#" class="close" data-dismiss="alert">×</a>
<%= value %>
</div>
<% end %>
