我使用 rails-engine https://github.com/rails-engine/notifications的通知 gem。当我遍历控制器索引页面时，它似乎失败了。它声称我的导航部分中的链接显然是未定义的。 NotificationController是目前唯一一个遇到此问题的人。我从来没有在今天之前使用这个宝石我的代码在
之下异常
Started GET "/notifications" for 127.0.0.1 at 2017-09-04 16:06:51 -0400
Processing by Notifications::NotificationsController#index as HTML
User Load (1.0ms) SELECT "users".* FROM "users" WHERE "users"."id" = $1 ORDER BY "users"."id" ASC LIMIT $2 [["id", 1], ["LIMIT", 1]]
Notification Load (0.0ms) SELECT "notifications".* FROM "notifications" WHERE "notifications"."user_id" = $1 ORDER BY id desc LIMIT $2 OFFSET $3 [["user_id", 1], ["LIMIT", 25], ["OFFSET", 0]]
Rendering notifications/notifications/index.html.erb within layouts/application
Rendered notifications/notifications/index.html.erb within layouts/application (96.1ms)
Rendered nav_partials/_user_navbar.html.erb (2572.3ms)
Completed 500 Internal Server Error in 8155ms (ActiveRecord: 1.0ms)
ActionView::Template::Error (undefined local variable or method `dashboard_index_path' for #<#<Class:0xc0ceb08>:0xc0ccff0>):
6:
7: <ul class="navbar-nav mr-auto mt-2 mt-md-0 user-nav-li-padding">
8: <li class="nav-item white-nav-link mobile-nav-link">
9: <%= active_link_to dashboard_index_path, class_active: 'nav-link active', :class_inactive => 'inactive' do %>
10: <div class="left">
11: <%= inline_svg 'user_navbar_icons/home_icon_inactive.svg', width: 50, height: 50 %>
12: </div>
_navbar.html.erb
<nav class="navbar fixed-top navbar-toggleable-sm pull-nav-to-front">
<button class="navbar-toggler navbar-toggler-right hidden-md-up" type="button" data-toggle="collapse" data-target="#navbar-collapse" aria-controls="#navbar-collapse" aria-expanded="false" aria-label="toggle navigation" style="background-color: #fdfeff;">☰</button>
<div class="collapse navbar-collapse mobile-nav-bg" id="navbar-collapse">
<ul class="navbar-nav mr-auto mt-2 mt-md-0 user-nav-li-padding">
<li class="nav-item white-nav-link mobile-nav-link">
<%= active_link_to dashboard_index_path, class_active: 'nav-link active', :class_inactive => 'inactive' do %>
<div class="left">
<%= inline_svg 'user_navbar_icons/home_icon_inactive.svg', width: 50, height: 50 %>
</div>
<div class="right">
<p>My Dashboard</p>
</div>
<% end %>
</li>
<li class="nav-item white-nav-link mobile-nav-link">
<%= active_link_to posts_path, class_active: 'nav-link active', :class_inactive => 'inactive' do %>
<div class="left">
<%= inline_svg 'user_navbar_icons/post_icon_inactive.svg', width: 50, height: 50 %>
</div>
<div class="right">
<p>Posts</p>
</div>
<% end %>
</li>
<li class="nav-item white-nav-link mobile-nav-link">
<%= active_link_to mailbox_index_path, class_active: 'nav-link active', :class_inactive => 'inactive' do %>
<div class="left">
<%= inline_svg 'user_navbar_icons/mail_icon_inactive.svg', width: 50, height: 50 %>
</div>
<div class="right">
<p>Messages</p>
</div>
<% end %>
</li>
<li class="nav-item white-nav-link mobile-nav-link">
<small class="badge badge-default notifications-counter-badge"><%= notification_count_for(current_user) %></small>
<%= active_link_to notifications_path, class_active: 'nav-link active', :class_inactive => 'inactive' do %>
<div class="left">
<%= inline_svg 'user_navbar_icons/notification_icon_inactive.svg', width: 50, height: 50 %>
</div>
<div class="right">
<p>Notifications</p>
</div>
<% end %>
</li>
<li class="nav-item white-nav-link mobile-nav-link">
<%= active_link_to favorites_index_path, class_active: 'nav-link active', :class_inactive => 'inactive' do %>
<div class="left">
<%= inline_svg 'user_navbar_icons/favorite_icon_inactive.svg', width: 50, height: 50 %>
</div>
<div class="right">
<p>Favorites</p>
</div>
<% end %>
</li>
<li class="nav-item white-nav-link mobile-nav-link">
<div class="dropdown">
<%= active_link_to '#', active: false, class: 'btn dropdown-toggle', class_active: 'nav-link active ', :class_inactive => 'inactive', id: 'dropdownmenubtn', data: { toggle: 'dropdown' }, aria: {haspopup: true, expanded: false } do %>
<div class="left">
<%= inline_svg 'user_navbar_icons/settings_icon_inactive.svg', width: 50, height: 50 %>
</div>
<div class="right">
<p>Settings</p>
</div>
<div class="dropdown-menu dropdown-menu-right settings-dropdown-menu-margin-pos dropdown-menu-font-color" aria-labelledby="dropdownmenubtn">
<h6 class="dropdown-header"><%= current_user.username %></h6>
<div class="dropdown-divider"></div>
<%= link_to 'Account Settings', edit_user_registration_path, class: 'dropdown-item' %>
<%= link_to 'Help', user_help_index_path, class: 'dropdown-item' %>
<div class="dropdown-divider"></div>
<%= link_to 'Logout', destroy_user_session_path, class: 'dropdown-item', method: :delete %>
</div>
<% end %>
</div>
</li>
</ul>
</div>
</nav>
<script type="text/javascript">
$(document).on('turbolinks:load', function() {
$('.dropdown-toggle').dropdown()
});
</script>
application.html.erb
<body>
<% if user_signed_in? %>
<%= render 'nav_partials/user_navbar' %>
<% elsif admin_signed_in? %>
<%= render 'nav_partials/admin_navbar' %>
<% else %>
<%= render 'nav_partials/navbar' %>
<% end %>
<%= yield %>
</body>
notifications_controller.rb
module Notifications
class NotificationsController < Notifications::ApplicationController
def index
@notifications = notifications.includes(:actor).order('id desc').page(params[:page])
unread_ids = @notifications.reject(&:read?).select(&:id)
Notification.read!(unread_ids)
@notification_groups = @notifications.group_by { |note| note.created_at.to_date }
end
def clean
notifications.delete_all
redirect_to notifications_path
end
private
def notifications
raise "You need reqiure user login for /notifications page." unless current_user
Notification.where(user_id: current_user.id)
end
end
end
通知索引
<div class="notifications row">
<div class="heading clearfix">
<%= t('notifications.all_notifications') %>
<span class="pull-xs-right">
<%= link_to t('notifications.clean_all'), notifications.clean_notifications_path, class: 'btn btn-sm btn-secondary', method: 'delete' %>
</span>
</div>
<div class="list">
<% if @notifications.blank? %>
<div class="no-records"><%= t('notifications.no_records') %></div>
<% else %>
<% @notification_groups.each do |group, notifications| %>
<div class="notification-group">
<div class="group-title"><%= group %></div>
<%= render notifications %>
</div>
<% end %>
<% end %>
</div>
<%= paginate @notifications %>
</div>
_notification.html.erb
<%= cache(['notifications', Notifications::VERSION, notification]) do %>
<div id="notification-<%= notification.id %>"
data-id="<%= notification.id %>"
class="media notification notification-<%= notification.notify_type %><%= ' unread' unless notification.read? %>">
<div class="media-left">
<% if notification.actor_profile_url && notification.actor_avatar_url %>
<%= link_to image_tag(notification.actor_avatar_url), notification.actor_profile_url, title: notification.actor_name, class: 'user-avatar' %>
<% end %>
</div>
<div class="media-body">
<%= render partial: "/notifications/#{notification.notify_type}", locals: { notification: notification } %>
</div>
<div class="media-right">
<%= l notification.created_at, format: :short %>
</div>
</div>
<% end %>
通知_follow.html.erb
<div class="media-heading">
<%= link_to notification.actor.username, notification.actor %> just followed you.
</div>
的routes.rb
Rails.application.routes.draw do
mount Notifications::Engine => "/notifications"
mount Payola::Engine => '/payola', as: :payola
mount CountryStateSelect::Rails::Engine, at: "/"
devise_for :admins
devise_for :users
namespace :api do
scope :v1 do
mount_devise_token_auth_for 'User', at: 'user_auth'
end
end
devise_scope :user do
put 'user_change_plan', :to => 'users/registrations#user_change_plan'
put 'user_update_credit_card', :to => 'users/registrations#user_update_credit_card'
authenticated do
root to: 'user_dashboard#index', as: 'authenticated_user_root'
end
unauthenticated do
root to: 'home#index', as: 'unauthenticated_user_root'
end
end
end
devise_scope :admin do
authenticated do
root to: 'admin_dashboard#admin', as: 'authenticated_admin_root'
end
unauthenticated do
root to: 'home#index', as: 'unauthenticated_admin_root'
end
end
controller :home do
get :index, to: 'home#index', as: 'home', :path => 'home'
get :login_portal, to: 'home#login_portal', as: 'login_portal', :path => 'login_portal'
get :signup_portal, to: 'home#signup_portal', as: 'signup_portal', :path => 'signup_portal'
end
resources :user_dashboard, as: 'dashboard', :only => [:index, :show]
resources :comments
resources :posts do
member do
post :share
put 'like', to: 'posts#like'
get 'like', to: 'posts#like'
end
end
resources :users, only: [:show, :index, :update], path: 'u' do
get 'users/:username' => 'users#show'
patch 'users/:username', to: 'users#update'
resources :follows, :only => [:create, :destroy]
end
controller :favorites do
get 'favorites/index'
end
resource :user_profile, :only => [:edit, :update], path: 'profile'
root 'home#index'
end
我尝试包含Notifications模块，而不是将控制器包装在其中。它也不起作用。
500 Internal Server Error If you are the administrator of this website, then please read this web application's log file and/or the web server's log file to find out what went wrong.
答案 0 :(得分：0)
按以下方式更改路线：
resource :user_dashboard, as: 'dashboard', only: :show
您的链接看起来像这样
<%= active_link_to dashboard_path, class_active: 'nav-link active', :class_inactive => 'inactive' do %>
答案 1 :(得分：0)
您需要在导航栏上的每个链接上添加def your_dynamic_query_generator(self):
return Q(num_shifts=0)
前缀，例如main_app ...
有关更多详细信息，请参见here。