Detected sqlite3 gem which is not supported on Heroku

出現類似的問題：https://saadbinakhlaq.wordpress.com/2012/08/11/problems-while-deploying-ruby-on-rails-app-on-heroku/

出現的問題：

解決方案：

之前沒有添加，後面的具體1.3.11 就一直在git push heroku master時出現Detected sqlite3 gem which is not supported on Heroku錯誤

1、bundle install

2、就是要把修改了的Gemfile文件要git add Gemfile

3、git commit -m "update Gemfile" 

4、git push heroku master

5、heroku run rake db:migrate --app 應用名稱

6、heroku open

基本上可以搞定！！！

Gemfile文件如下：

source 'https://rubygems.org'

ruby '2.0.0'
#ruby '2.2.2'

# Bundle edge Rails instead: gem 'rails', github: 'rails/rails'
gem 'rails', '4.2.1'
# Use sqlite3 as the database for Active Record

gem 'tzinfo-data', platforms: [:mingw, :mswin, :x64_mingw]
gem 'coffee-script-source','1.8.0'

# Use SCSS for stylesheets
gem 'sass-rails', '~> 5.0'
# Use Uglifier as compressor for JavaScript assets
gem 'uglifier', '>= 1.3.0'
# Use CoffeeScript for .coffee assets and views
gem 'coffee-rails', '~> 4.1.0'
# See https://github.com/rails/execjs#readme for more supported runtimes
# gem 'therubyracer', platforms: :ruby
# Use Haml as the templating library
gem 'haml'
# Use jquery as the JavaScript library
gem 'jquery-rails'
# Turbolinks makes following links in your web application faster. Read more: https://github.com/rails/turbolinks
gem 'turbolinks'
# Build JSON APIs with ease. Read more: https://github.com/rails/jbuilder
gem 'jbuilder', '~> 2.0'
# bundle exec rake doc:rails generates the API under doc/api.
gem 'sdoc', '~> 0.4.0', group: :doc

# Use ActiveModel has_secure_password
# gem 'bcrypt', '~> 3.1.7'

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

# Use Capistrano for deployment
# gem 'capistrano-rails', group: :development

group :development, :test do
  # Call 'byebug' anywhere in the code to stop execution and get a debugger console
  gem 'byebug'

 #gem 'sqlite3'


  # Access an IRB console on exception pages or by using <%= console %> in views
  gem 'web-console', '~> 2.0'

  # Spring speeds up development by keeping your application running in the background. Read more: https://github.com/rails/spring
  gem 'spring'

  gem 'rspec-rails'
  gem 'autotest'
end

group :development, :test do
  gem 'sqlite3', '1.3.11'
end

group :production do
  gem 'pg' # for Heroku deployment
  gem 'rails_12factor'
end

Gemfile.lcok文件如下：

GEM
  remote: https://rubygems.org/
  specs:
    ZenTest (4.11.0)
    actionmailer (4.2.1)
      actionpack (= 4.2.1)
      actionview (= 4.2.1)
      activejob (= 4.2.1)
      mail (~> 2.5, >= 2.5.4)
      rails-dom-testing (~> 1.0, >= 1.0.5)
    actionpack (4.2.1)
      actionview (= 4.2.1)
      activesupport (= 4.2.1)
      rack (~> 1.6)
      rack-test (~> 0.6.2)
      rails-dom-testing (~> 1.0, >= 1.0.5)
      rails-html-sanitizer (~> 1.0, >= 1.0.1)
    actionview (4.2.1)
      activesupport (= 4.2.1)
      builder (~> 3.1)
      erubis (~> 2.7.0)
      rails-dom-testing (~> 1.0, >= 1.0.5)
      rails-html-sanitizer (~> 1.0, >= 1.0.1)
    activejob (4.2.1)
      activesupport (= 4.2.1)
      globalid (>= 0.3.0)
    activemodel (4.2.1)
      activesupport (= 4.2.1)
      builder (~> 3.1)
    activerecord (4.2.1)
      activemodel (= 4.2.1)
      activesupport (= 4.2.1)
      arel (~> 6.0)
    activesupport (4.2.1)
      i18n (~> 0.7)
      json (~> 1.7, >= 1.7.7)
      minitest (~> 5.1)
      thread_safe (~> 0.3, >= 0.3.4)
      tzinfo (~> 1.1)
    arel (6.0.3)
    autotest (4.4.6)
      ZenTest (>= 4.4.1)
    binding_of_caller (0.7.2)
      debug_inspector (>= 0.0.1)
    builder (3.2.2)
    byebug (5.0.0)
      columnize (= 0.9.0)
    coffee-rails (4.1.0)
      coffee-script (>= 2.2.0)
      railties (>= 4.0.0, < 5.0)
    coffee-script (2.4.1)
      coffee-script-source
      execjs
    coffee-script-source (1.8.0)
    columnize (0.9.0)
    debug_inspector (0.0.2)
    diff-lcs (1.2.5)
    erubis (2.7.0)
    execjs (2.5.2)
    globalid (0.3.6)
      activesupport (>= 4.1.0)
    haml (4.0.6)
      tilt
    i18n (0.7.0)
    jbuilder (2.3.1)
      activesupport (>= 3.0.0, < 5)
      multi_json (~> 1.2)
    jquery-rails (4.0.4)
      rails-dom-testing (~> 1.0)
      railties (>= 4.2.0)
      thor (>= 0.14, < 2.0)
    json (1.8.3)
    loofah (2.0.2)
      nokogiri (>= 1.5.9)
    mail (2.6.3)
      mime-types (>= 1.16, < 3)
    mime-types (2.6.1)
    mini_portile (0.6.2)
    minitest (5.8.0)
    multi_json (1.11.2)
    nokogiri (1.6.6.2)
      mini_portile (~> 0.6.0)
    nokogiri (1.6.6.2-x86-mingw32)
      mini_portile (~> 0.6.0)
    pg (0.18.2)
    pg (0.18.2-x86-mingw32)
    rack (1.6.4)
    rack-test (0.6.3)
      rack (>= 1.0)
    rails (4.2.1)
      actionmailer (= 4.2.1)
      actionpack (= 4.2.1)
      actionview (= 4.2.1)
      activejob (= 4.2.1)
      activemodel (= 4.2.1)
      activerecord (= 4.2.1)
      activesupport (= 4.2.1)
      bundler (>= 1.3.0, < 2.0)
      railties (= 4.2.1)
      sprockets-rails
    rails-deprecated_sanitizer (1.0.3)
      activesupport (>= 4.2.0.alpha)
    rails-dom-testing (1.0.6)
      activesupport (>= 4.2.0.beta, < 5.0)
      nokogiri (~> 1.6.0)
      rails-deprecated_sanitizer (>= 1.0.1)
    rails-html-sanitizer (1.0.2)
      loofah (~> 2.0)
    rails_12factor (0.0.3)
      rails_serve_static_assets
      rails_stdout_logging
    rails_serve_static_assets (0.0.4)
    rails_stdout_logging (0.0.3)
    railties (4.2.1)
      actionpack (= 4.2.1)
      activesupport (= 4.2.1)
      rake (>= 0.8.7)
      thor (>= 0.18.1, < 2.0)
    rake (10.4.2)
    rdoc (4.2.0)
    rspec-core (3.3.2)
      rspec-support (~> 3.3.0)
    rspec-expectations (3.3.1)
      diff-lcs (>= 1.2.0, < 2.0)
      rspec-support (~> 3.3.0)
    rspec-mocks (3.3.2)
      diff-lcs (>= 1.2.0, < 2.0)
      rspec-support (~> 3.3.0)
    rspec-rails (3.3.3)
      actionpack (>= 3.0, < 4.3)
      activesupport (>= 3.0, < 4.3)
      railties (>= 3.0, < 4.3)
      rspec-core (~> 3.3.0)
      rspec-expectations (~> 3.3.0)
      rspec-mocks (~> 3.3.0)
      rspec-support (~> 3.3.0)
    rspec-support (3.3.0)
    sass (3.4.16)
    sass-rails (5.0.3)
      railties (>= 4.0.0, < 5.0)
      sass (~> 3.1)
      sprockets (>= 2.8, < 4.0)
      sprockets-rails (>= 2.0, < 4.0)
      tilt (~> 1.1)
    sdoc (0.4.1)
      json (~> 1.7, >= 1.7.7)
      rdoc (~> 4.0)
    spring (1.3.6)
    sprockets (3.2.0)
      rack (~> 1.0)
    sprockets-rails (2.3.2)
      actionpack (>= 3.0)
      activesupport (>= 3.0)
      sprockets (>= 2.8, < 4.0)
    sqlite3 (1.3.11)
    thor (0.19.1)
    thread_safe (0.3.5)
    tilt (1.4.1)
    turbolinks (2.5.3)
      coffee-rails
    tzinfo (1.2.2)
      thread_safe (~> 0.1)
    tzinfo-data (1.2015.6)
      tzinfo (>= 1.0.0)
    uglifier (2.7.1)
      execjs (>= 0.3.0)
      json (>= 1.8.0)
    web-console (2.2.1)
      activemodel (>= 4.0)
      binding_of_caller (>= 0.7.2)
      railties (>= 4.0)
      sprockets-rails (>= 2.0, < 4.0)

PLATFORMS
  ruby
  x86-mingw32

DEPENDENCIES
  autotest
  byebug
  coffee-rails (~> 4.1.0)
  coffee-script-source (= 1.8.0)
  haml
  jbuilder (~> 2.0)
  jquery-rails
  pg
  rails (= 4.2.1)
  rails_12factor
  rspec-rails
  sass-rails (~> 5.0)
  sdoc (~> 0.4.0)
  spring
  sqlite3 (= 1.3.11)
  turbolinks
  tzinfo-data
  uglifier (>= 1.3.0)
  web-console (~> 2.0)

BUNDLED WITH
   1.10.6