当用户单击“忘记密码”时,会将他们带到“忘记密码”页面,其中包含供他们输入电子邮件地址的字段。如果他们的电子邮件地址在数据库中,则一切都是桃花心木,但是如果该电子邮件地址在数据库中不存在,则它将重定向到同一页面,但不会显示错误消息。
如何使错误消息出现?
/view/devise/passwords/new.html.erb
...
<%= form_for(resource, :as => resource_name, :url => password_path(resource_name), :html => { :method => :post }) do |f| %>
<h1>Reset Password</h1>
<div class="login-fields">
<p>Instructions on resetting your password will be emailed to you.</p>
<%= render :partial => '/shared/messages' %>
<div class="field">
<%= f.label :email %>
<%= f.email_field :email, :placeholder => 'Email', :class => 'login username-field' %>
</div> <!-- /field -->
</div> <!-- /login-fields -->
<div class="login-actions">
<%= content_tag(:button, :type=>:submit, :class => "button btn btn-secondary btn-large") do %>
Send me reset password instructions
<% end %>
</div> <!-- .actions -->
<div class="login-social">
<%= render "devise/shared/links" %>
</div>
<% end %>
...
/views/shared/_messages.html.erb
<% if alert || flash[:alert] || flash[:error] %>
<div class="alert alert-error">
<a class="close" data-dismiss="alert" href="#">x</a>
<h4 class="alert-heading">Error!</h4>
<%= alert %>
<%= flash[:error] %>
</div>
<% end %>
<% if flash[:success] || notice || flash[:notice]%>
<div class="alert alert-success">
<a class="close" data-dismiss="alert" href="#">x</a>
<h4 class="alert-heading">Success!</h4>
<%= flash[:success] %>
<%= notice %>
</div>
<% end %>
在共享消息部分中,您仅显示来自控制器的错误。您需要包括模型附带的错误。在这种情况下,错误消息将附加到用户模型。您的/views/shared/_messages.html.erb实际上应该如下所示:
<% if alert || flash[:alert] || flash[:error] %>
<div class="alert alert-error">
<a class="close" data-dismiss="alert" href="#">x</a>
<h4 class="alert-heading">Error!</h4>
<%= alert %>
<%= flash[:error] %>
</div>
<% end %>
<% if model.errors.any? %>
<div class="alert alert-error">
<a class="close" data-dismiss="alert" href="#">x</a>
<h4 class="alert-heading">Error!</h4>
<ul>
<% model.errors.full_messages.each do |msg| %>
<li>* <%= msg %></li>
<% end %>
</ul>
</div>
<% end %>
<% if flash[:success] || notice || flash[:notice]%>
<div class="alert alert-success">
<a class="close" data-dismiss="alert" href="#">x</a>
<h4 class="alert-heading">Success!</h4>
<%= flash[:success] %>
<%= notice %>
</div>
<% end %>
在渲染部分图像时,您需要传入模型。
<%= render '/shared/messages', model: resource %>
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