在localhost测试期间的我的应用中，我可以点击一个链接，将我带到edit_event_path(event)页面，效果非常好。
当我将它推送到Heroku时，我不断收到错误“此页面不存在”，但我仍然可以访问/event索引页面。
它似乎只适用于编辑页面。
我的routes.rb
Rails.application.routes.draw do
resources :approvals
devise_for :users
resources :events
resources :roles
# The priority is based upon order of creation: first created -> highest priority.
# See how all your routes lay out with "rake routes".
scope "/admin" do
resources :users do
collection do
match 'update_collection', via: [:put, :patch]
end
end
end
# You can have the root of your site routed with "root"
root 'events#index'
# Example of regular route:
# get 'products/:id' => 'catalog#view'
# Example of named route that can be invoked with purchase_url(id: product.id)
# get 'products/:id/purchase' => 'catalog#purchase', as: :purchase
# Example resource route (maps HTTP verbs to controller actions automatically):
# resources :products
# Example resource route with options:
# resources :products do
# member do
# get 'short'
# post 'toggle'
# end
#
# collection do
# get 'sold'
# end
# end
# Example resource route with sub-resources:
# resources :products do
# resources :comments, :sales
# resource :seller
# end
# Example resource route with more complex sub-resources:
# resources :products do
# resources :comments
# resources :sales do
# get 'recent', on: :collection
# end
# end
# Example resource route with concerns:
# concern :toggleable do
# post 'toggle'
# end
# resources :posts, concerns: :toggleable
# resources :photos, concerns: :toggleable
# Example resource route within a namespace:
# namespace :admin do
# # Directs /admin/products/* to Admin::ProductsController
# # (app/controllers/admin/products_controller.rb)
# resources :products
# end
end
Heroku Logs
2016-02-07T18:10:42.416537+00:00 app[web.1]: [2016-02-07 18:10:42] INFO WEBrick 1.3.1
2016-02-07T18:10:42.417158+00:00 app[web.1]: [2016-02-07 18:10:42] INFO WEBrick::HTTPServer#start: pid=3 port=33086
2016-02-07T18:10:42.416617+00:00 app[web.1]: [2016-02-07 18:10:42] INFO ruby 2.2.4 (2015-12-16) [x86_64-linux]
2016-02-07T18:10:42.689042+00:00 heroku[web.1]: State changed from starting to up
2016-02-07T18:10:44.112872+00:00 heroku[router]: at=info method=GET path="/" host=rocky-garden-45285.herokuapp.com request_id=68c4f973-c80d-4c5a-8fcb-b0278f2cbf91 fwd="31.54.189.126" dyno=web.1 connect=1ms service=270ms status=200 bytes=3966
2016-02-07T18:10:44.310780+00:00 heroku[router]: at=info method=GET path="/assets/application-f963057a4622f6dd81c09aa4b5984113c498b7784f67dfc6ef8bff81e17352df.css" host=rocky-garden-45285.herokuapp.com request_id=9fae1fe7-dceb-451a-836f-e52cda494151 fwd="31.54.189.126" dyno=web.1 connect=0ms service=23ms status=304 bytes=133
2016-02-07T18:10:44.535082+00:00 heroku[router]: at=info method=GET path="/assets/application-6abdf7298b102105c44b987e39846d7496e6a9c5e36a3eac9c8e68189eaa9865.js" host=rocky-garden-45285.herokuapp.com request_id=759a6a46-fe88-4db6-8c09-d79a1a9d005d fwd="31.54.189.126" dyno=web.1 connect=0ms service=22ms status=304 bytes=133
2016-02-07T18:10:45.045464+00:00 heroku[router]: at=info method=GET path="/assets/submit.png" host=rocky-garden-45285.herokuapp.com request_id=32c0080b-4eea-493a-a49a-73a517d5339d fwd="31.54.189.126" dyno=web.1 connect=0ms service=90ms status=304 bytes=343
2016-02-07T18:10:45.061932+00:00 heroku[router]: at=info method=GET path="/assets/pencil.png" host=rocky-garden-45285.herokuapp.com request_id=b05f2f39-6f94-44a7-89e7-1a4cd20d2afb fwd="31.54.189.126" dyno=web.1 connect=1ms service=302ms status=304 bytes=343
2016-02-07T18:10:45.042709+00:00 heroku[router]: at=info method=GET path="/assets/doc.png" host=rocky-garden-45285.herokuapp.com request_id=efaa4827-c548-485f-8d82-e98313823573 fwd="31.54.189.126" dyno=web.1 connect=0ms service=303ms status=304 bytes=343
2016-02-07T18:10:48.512052+00:00 heroku[router]: at=info method=GET path="/events/1/edit" host=rocky-garden-45285.herokuapp.com request_id=72bfc70a-ef5b-401b-9b62-cf7f1f2f14c1 fwd="31.54.189.126" dyno=web.1 connect=0ms service=22ms status=404 bytes=1829
2016-02-07T18:10:48.644811+00:00 heroku[router]: at=info method=GET path="/events/1/edit" host=rocky-garden-45285.herokuapp.com request_id=64f69780-d399-4f81-9354-b7998b98afb2 fwd="31.54.189.126" dyno=web.1 connect=1ms service=12ms status=404 bytes=1829
2016-02-07T18:10:52.675030+00:00 heroku[router]: at=info method=GET path="/events/1/edit" host=rocky-garden-45285.herokuapp.com request_id=50101311-033a-4dda-a4fb-c750144f8685 fwd="31.54.189.126" dyno=web.1 connect=1ms service=13ms status=404 bytes=1829
2016-02-07T18:10:52.805759+00:00 heroku[router]: at=info method=GET path="/events/1/edit" host=rocky-garden-45285.herokuapp.com request_id=0b665b71-6949-47da-9061-78d7a9014b3a fwd="31.54.189.126" dyno=web.1 connect=0ms service=11ms status=404 bytes=1829
EventsController
class EventsController < ApplicationController
before_filter :authenticate_user!
before_action :set_event, only: [:show, :edit, :update, :destroy]
before_action :set_users
before_action :set_user, except: [:index]
# GET /events
# GET /events.json
def index
@events = Event.where(:approved => true)
@users = User.all.order("created_at DESC")
end
# GET /events/1
# GET /events/1.json
def show
end
# GET /events/new
def new
@event = Event.new
end
# GET /events/1/edit
def edit
end
# POST /events
# POST /events.json
def create
@event = Event.new(event_params)
respond_to do |format|
if @event.save
format.html { redirect_to @event, notice: 'Event was successfully created.' }
format.json { render :show, status: :created, location: @event }
else
format.html { render :new }
format.json { render json: @event.errors, status: :unprocessable_entity }
end
end
end
# PATCH/PUT /events/1
# PATCH/PUT /events/1.json
def update
respond_to do |format|
if @event.update(event_params)
format.html { redirect_to @event, notice: 'Event was successfully updated.' }
format.json { render :show, status: :ok, location: @event }
else
format.html { render :edit }
format.json { render json: @event.errors, status: :unprocessable_entity }
end
end
end
# DELETE /events/1
# DELETE /events/1.json
def destroy
@event.destroy
respond_to do |format|
format.html { redirect_to events_url, notice: 'Event was successfully destroyed.' }
format.json { head :no_content }
end
end
private
# Use callbacks to share common setup or constraints between actions.
def set_event
@event = Event.find(params[:id])
end
def set_user
@user = User.find(params[:id])
end
def set_users
@users = User.all.order("created_at DESC")
end
# Never trust parameters from the scary internet, only allow the white list through.
def event_params
params.require(:event).permit(:name, :user_id)
end
end
我不确定是否需要任何其他日志或其他日志来回答我的问题，但如果您发表评论，我会提供给他们！谢谢！
答案 0 :(得分：1)
您的代码看起来很好 - 可能没有ID为1的Event。您还没有在生产中创建任何代码，或者您已经删除了它。 /events/1也可能是404。
转到/events/new创建Event。您还可以使用heroku pg:psql（假设您已安装toolbelt）和SELECT id FROM events登录您的Heroku数据库，以验证哪些ID存在。
您还使用@user加载params[:id]，这是Event的ID。如果User与Event具有相同的ID不存在，则Rails会引发相同的RecordNotFound异常，这就是404的结果。看起来像你'我已登录此应用程序，因此您可能希望从session[:user_id]，通过Devise加载，或者您建立身份验证。