Ruby on rails sqlite3 1.3.6 heroku的推送拒绝

这是一个问题，即使在用这个答案中建议的更新修复了我的Gemfile之后，我也会遇到这个问题

即使在添加了前面提到的Gemfile.lock之后！我得到了这组错误。尝试编译sqlite3时失败

-----> Ruby/Rails app detected
-----> Installing dependencies using Bundler version 1.3.0.pre.5
       Running: bundle install --without development:test --path vendor/bundle --binstubs vendor/bundle/bin --deployment
       You are trying to install in deployment mode after changing
       your Gemfile. Run `bundle install` elsewhere and add the
       updated Gemfile.lock to version control.
       You have added to the Gemfile:
       * pg
       * sqlite3
       You have deleted from the Gemfile:
       * sqlite3 (= 1.3.6)
 !
 !     Failed to install gems via Bundler.
 !
 !     Heroku push rejected, failed to compile Ruby/rails app

我猜我可能需要更改一些依赖项？或者我该怎么办，我以前从来没有做过

就像我写的那样：

Heroku不支持sqlite数据库。你需要在生产中使用。在rails中，切换数据库很容易：

Installing sqlite3 (1.3.7)
       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:
       --with-opt-dir
       --without-opt-dir
       --with-opt-include
       --without-opt-include=${opt-dir}/include
       --with-opt-lib
       --without-opt-lib=${opt-dir}/lib
       --with-make-prog
       --without-make-prog
       --srcdir=.
       --curdir
       --ruby=/usr/local/bin/ruby
       --with-sqlite3-dir
       --without-sqlite3-dir
       --with-sqlite3-include
       --without-sqlite3-include=${sqlite3-dir}/include
       --with-sqlite3-lib
       --without-sqlite3-lib=${sqlite3-dir}/lib
       --enable-local
       --disable-local
       Gem files will remain installed in /tmp/build_1u9pbycs3fav1/vendor/bundle/ruby/1.9.1/gems/sqlite3-1.3.7 for inspection.
       Results logged to /tmp/build_1u9pbycs3fav1/vendor/bundle/ruby/1.9.1/gems/sqlite3-1.3.7/ext/sqlite3/gem_make.out
       An error occurred while installing sqlite3 (1.3.7), and Bundler cannot continue.
       Make sure that `gem install sqlite3 -v '1.3.7'` succeeds before bundling.
 !
 !     Failed to install gems via Bundler.
 !
 !     Heroku push rejected, failed to compile Ruby/rails app

像上面那样更改gemfile，然后运行

bundle

，并将更改提交到

gemfile

和

gemfile.lock

。然后，再次运行

git-push-heroku-master

这将允许您在开发和测试环境中本地使用sqlite，并在heroku上根据需要使用postgres

---

顺便说一下，rails的一个主要优点是它可以让您轻松地切换数据库。在其他框架中，这样做可能会花费数小时。

请遵循以下建议：是单报价还是双报价？“pg”还是“pg”？

group :production do
  gem "pg"
end

group :development, :test do
  gem "sqlite3"
end