由于sqlite3 gem错误,Heroku部署失败

Question

我刚刚开始阅读Michael Hartl撰写的ruby.railstutorial.org一书,并一直在完成第一章.我正在使用mac book OS X,Terminal和Sublime Text.一切都按计划进行,直到测试部署到Heroku为止.我能够连接到Heroku并运行$ git push herokumaster命令.但是部署失败了:

Installing sqlite3 (1.3.5) with native extensions
       Gem::Installer::ExtensionBuildError: ERROR: Failed to build gem native extension.
       /usr/local/bin/ruby extconf.rb
       checking for sqlite3.h... no
       sqlite3.h is missing. Try 'port install sqlite3 +universal'
       or 'yum install sqlite-devel' and check your shared library search path (the
       location where your sqlite3 shared library is located).
       *** extconf.rb failed ***
       Could not create Makefile due to some reason, probably lack of
       necessary libraries and/or headers.  Check the mkmf.log file for more
       details.  You may need configuration options.
       Provided configuration options:


An error occurred while installing sqlite3 (1.3.5), and Bundler cannot continue.
       Make sure that `gem install sqlite3 -v '1.3.5'` succeeds before bundling.
 !
 !     Failed to install gems via Bundler.
 !     
 !     Detected sqlite3 gem which is not supported on Heroku.
 !     http://devcenter.heroku.com/articles/how-do-i-use-sqlite3-for-development
 !
 !     Heroku push rejected, failed to compile Ruby/rails app

这是我的Gemfile

source 'https://rubygems.org'

       gem 'rails', '3.2.8'

       # Bundle edge Rails instead:
       # gem 'rails', :git => 'git://github.com/rails/rails.git'

       group :development, :test do
   gem 'sqlite3', '1.3.5'
       end


       # Gems used only for assets and not required
       # in production environments by default.
       group :assets do
       gem 'sass-rails',   '~> 3.2.5'
       gem 'coffee-rails', '~> 3.2.2'

       # See https://github.com/sstephenson/execjs#readme for more supported runtimes
       # gem 'therubyracer', :platforms => :ruby

       gem 'uglifier', '>= 1.2.3'
       end

       gem 'jquery-rails', '2.0.2'

       group :production do
   gem 'pg', '0.12.2'
       end

       # To use ActiveModel has_secure_password
       # gem 'bcrypt-ruby', '~> 3.0.0'

       # To use Jbuilder templates for JSON
       # gem 'jbuilder'

       # Use unicorn as the app server
       # gem 'unicorn'

       # Deploy with Capistrano
       # gem 'capistrano'

       # To use debugger
       # gem 'debugger'

我有sqlite3指定用于开发而不是生产,所以我认为Heroku会一起忽略它,但似乎并非如此.

此外,当我创建捆绑我使用$ bundle install --without production

我知道有些人建议只安装PG并使用它,但我真的想尽可能地坚持本教程,然后再冒险尝试不同的方法.

我此刻有点失落,不知道如何从这里开始.您可以提供的任何帮助将非常感激.

谢谢

Answer 1

无论出于何种原因,Heroku都无法安装sqlite3 gem.但你可以说bundler,除了开发之外它不应该尝试.

在你的Gemfile,替换gem 'sqlite3'为:

group :development, :test do
  gem 'sqlite3'
end
group :production do
  gem 'pg'
end

然后运行的heroku上的bundler production将不会尝试安装它.

Answer 2

我终于能够成功部署到Heroku.感谢evanc3指向我在Heroku网站上的一篇文章.在部署到Heroku之前,我似乎忘了提交我的Gemgile更新.因此,对于刚刚开始的所有人,您需要确保在部署到Heroku之前提交更改.

Answer 3

Heroku不支持sqlite3 ...

从您的Gemfile中删除sqlite3,改为使用pg gem.在gem文件中进行以下更改

改变你的追随者 Gemfile

gem 'sqlite3'

至

gem 'pg' #you will have to install postgresql

重要:跑

git add .
git commit 
git push heroku master

注意:如果您计划部署heroku,我建议最好在开发阶段使用postgres(在您的计算机上安装postgresql),heroku更喜欢psql.

如果要使用sqllite进行开发,使用postgresql进行Heroku,请使用以下配置.

group :development do 
   gem 'sqlite3'    #gem to use in development environment
end

group :production do 
  gem 'pg'         #gem to use in production environment
end

Heroku将使用pggem,因为heroku在生产环境中运行您的应用程序