Devise Flash Method Rails [duplicate]

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Rails Devise I18n Flash Messages with Twitter Bootstrap 6 answers

I am using Rails 4, Twitter Bootstrap 3.0, and Devise 3.0. I am trying to get identical looking flash messages for devise and the rest of my site. So far I have this:

Within "app/views/layouts/application.html.erb":

<%= render 'layouts/messages' %>

"app/views/layouts/_messages.html.erb":

<% devise_flash %>
<% flash.each do |key, value| %>
  <div class="alert alert-<%= key %>">
    <a href="#" data-dismiss="alert" class="close">×</a>
    <%= value %>
  </div>
<% end %>

I have created a "app/helpers/devise_helper.rb" in order to override the default devise error messages:

module DeviseHelper
  def devise_error_messages!
  end
end

"app/helpers/application_helper.rb":

def devise_flash
  if controller.devise_controller? && resource.errors.any?
    flash.now[:error] = flash[:error].to_a.concat resource.errors.full_messages
    flash.now[:error].uniq!
  end
end

"app/assets/stylesheets/custom.css.scss":

.alert-error {
    background-color: #f2dede;
    border-color: #eed3d7;
    color: #b94a48;
    text-align: center; }

.alert-alert {
    background-color: #f2dede;
    border-color: #eed3d7;
    color: #b94a48;
    text-align: center; }

.alert-success {
    background-color: #dff0d8;
    border-color: #d6e9c6;
    color: #468847;
    text-align: center; }

.alert-notice {
    background-color: #dff0d8;
    border-color: #d6e9c6;
    color: #468847;
    text-align: center; }

It displays normal flash messages fine but the issue is when I have a devise error. It looks like this: enter image description here

I am trying to list the errors more like this: enter image description here

I don't want the errors to be surrounded by "". It does not need to have the bullets, but I want it to be listed vertically. I think I need to edit my devise_flash method in the "app/helpers/application_helper.rb" file.

How can I do this?

标签： ruby-on-rails twitter-bootstrap devise ruby-on-rails-4 twitter-bootstrap-3

2条回答

\"骚年 ilove

2楼-- · 2019-02-07 09:12

I made a wiki page within the devise wiki on github for How To: Integrate I18n Flash Messages with Devise and Bootstrap

Flash Messages For the Site

First we will make a rendered view to make the code concise. Within "app/views/layouts/application.html.erb" I added <%= render 'layouts/messages' %>.

My file looks like:

<body>
  <%= render 'layouts/header' %>
  <div class="container">
    <%= render 'layouts/messages' %>
    <%= yield %>
    <%= render 'layouts/footer' %>
  </div>
</body>

Next we have to make the messages file. Make a new file in "app/views/layouts/_messages.html.erb" and add:

<% flash.each do |key, value| %>
  <div class="alert alert-<%= key %>">
    <a href="#" data-dismiss="alert" class="close">×</a>
      <ul>
        <li>
          <%= value %>
        </li>
      </ul>
  </div>
<% end %>

This will give us flash messages for the entire site.

Flash Messages For Devise

For devise you need to override the way devise handles flash messages. Create a file called devise_helper in "app/helpers/devise_helper.rb".

Inside the file you have to create a method called devise_error_messages!, which is the name of the file that tells devise how to handle flash messages.

module DeviseHelper
  def devise_error_messages!
    return '' if resource.errors.empty?

    messages = resource.errors.full_messages.map { |msg| content_tag(:li, msg) }.join
    html = <<-HTML
    <div class="alert alert-error alert-block"> <button type="button"
    class="close" data-dismiss="alert">x</button>
      #{messages}
    </div>
    HTML

    html.html_safe
  end
end

Next in your devise views you will have to define where you want the error messages to appear. You will need to enter <%= devise_error_messages! %> within the devise pages. An example is entering this within "app/views/devise/registrations/.new.html.erb" (The sign up page)

The method call should already be within the file, but you can move the code around to customize where it is shown.

CSS For Flash Messages

If you do not want to use the odd blue and yellow alerts that come default, I have set error and alert to have the same color and success and notice to have the same color. I am using red for errors and alerts, and green for success and notice.

Within my "app/assets/stylesheets/custom.css.scss" I have:

/*flash*/
.alert-error {
    background-color: #f2dede;
    border-color: #eed3d7;
    color: #b94a48;
    text-align: left;
 }

.alert-alert {
    background-color: #f2dede;
    border-color: #eed3d7;
    color: #b94a48;
    text-align: left;
 }

.alert-success {
    background-color: #dff0d8;
    border-color: #d6e9c6;
    color: #468847;
    text-align: left;
 }

.alert-notice {
    background-color: #dff0d8;
    border-color: #d6e9c6;
    color: #468847;
    text-align: left;
 }

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够拽才男人

3楼-- · 2019-02-07 09:19

I'm guessing since flash[:error].to_a resource.errors.full_messages produces an array which is then simply printed out in your alert through <%= value %>, it prints the entire array which is not what you want.

Instead of printing the array directly, you may want to try looping through the contents like so:

<% value.each do |n| %>
  # Print content here to get desired effect
<% end %>

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