在 Ruby Sinatra 应用程序上获得 404 - Heroku答案

【问题标题】：Getting a 404 on Ruby Sinatra App - Heroku在 Ruby Sinatra 应用程序上获得 404 - Heroku
【发布时间】：2014-11-08 00:31:48
【问题描述】：

我有一个简单的 Sinatra 应用程序。在本地机器上运行良好。

将其部署到 Heroku，我在日志中不断收到 404。

我保证我在网上搜索了大约 5 小时，但无法弄清楚。

我得到的日志是：

2014-11-08T00:17:12.537150+00:00 heroku[web.1]: Starting process with command `bundle exec rackup config.ru -p 51609`
2014-11-08T00:17:12.840926+00:00 heroku[web.1]: Process exited with status 143
2014-11-08T00:17:16.370395+00:00 app[web.1]: [2014-11-08 00:17:16] INFO  WEBrick 1.3.1
2014-11-08T00:17:16.370515+00:00 app[web.1]: [2014-11-08 00:17:16] INFO  ruby 2.0.0 (2014-10-27) [x86_64-linux]
2014-11-08T00:17:16.371280+00:00 app[web.1]: [2014-11-08 00:17:16] INFO  WEBrick::HTTPServer#start: pid=2 port=51609
2014-11-08T00:17:16.745163+00:00 heroku[web.1]: State changed from starting to up
2014-11-08T00:17:35.351527+00:00 heroku[router]: at=info method=GET path="/" host=pacific-refuge-6392.herokuapp.com request_id=406b2ea5-5898-4a86-8a26-6bf71f70d3f6 fwd="200.170.116.105" dyno=web.1 connect=3ms service=22ms status=404 bytes=319
2014-11-08T00:17:35.352064+00:00 app[web.1]: 200.170.116.105 - - [08/Nov/2014 00:17:35] "GET / HTTP/1.1" 404 18 0.0030

我的Gemfile是这样的：

ruby '2.0.0'
source "https://rubygems.org"

gem 'sinatra-base'
gem 'sinatra-assetpack'
gem 'sinatra-asset-pipeline'
gem 'sass'
gem 'datamapper'
gem 'pony'

group :production do
    gem "pg"
    gem "dm-postgres-adapter"
end

group :development, :test do
    gem "sqlite3"
    gem "dm-sqlite-adapter"
end

Proclife：

web: bundle exec rackup config.ru -p $PORT

我尝试使用 ruby 而不是 rackup 以及我发现的其他一些变体。

Config.ru

require './my_launch'
run Sinatra::Application

最后，我的应用：my_launch.rb：

require 'sinatra/base'
require 'sinatra/assetpack'
require 'sass'
require 'data_mapper'
require 'dm-migrations'
require 'pony'

DataMapper.setup(:default, ENV['DATABASE_URL'] || "sqlite3://#{Dir.pwd}/mylaunch.db")

class Users
  include DataMapper::Resource
  property :id, Serial
  property :email, String, :required => true, :format => :email_address
  property :created_at, DateTime
end

DataMapper.finalize.auto_upgrade!


class MyLaunch < Sinatra::Base
  set :sessions, true
  register Sinatra::AssetPack

  assets do
     css :main, [
      '/css/*.css'
     ]
     css_compression :sass
  end

  get '/' do
    erb :index
  end

  post '/' do
    n = Users.new
    n.email = params[:email]
    n.created_at = Time.now
    n.save
    redirect '/obrigado'
  end

  get '/obrigado' do
    erb :obrigado
  end

  get '/admin' do
    @users = Users.all :order => :id.desc
    erb :admin
  end

  run! if app_file == $0
end

我的数据库似乎没问题。为了测试我启动了 heroku 控制台并在我的数据库上创建了一个条目。通过要求 my_launch.rb 并创建 Users.new 及更高版本的 Users.save

https://github.com/abarro/mylaunch

【问题讨论】：

标签： ruby heroku sinatra ruby-datamapper

【解决方案1】：

在您的配置文件中，您调用 run Sinatra::Application 与定义所有路由的 Sinatra 继承类不同。改成

require './my_launch'
run MyLaunch

【讨论】：