Heroku构建错误：为数据库适配器指定了'sqlite3'，但未加载gem

Question

我想做什么

我正在构建一个带有rails的应用程序，并将一个非主分支部署到heroku master，测试生产中的应用程序。在我知道Heroku上正在做什么之前我不想弄乱主人，因此我部署了一个功能分支。

如果需要引用，应用程序qazxsw poi的存储库。

在对gemfile进行任何更改后，我运行了：

can be found here

最后一个命令记录为bundle update bundle install git add . git commit git push heroku 0007/heroku:master，用于将非主分支推送到herokus master。通常这样做是因为你不想搞砸主人。我还问了一会儿.here。

我调整了database.yml以适应Heroku要求和postgresql和sqlite3。

The question how to set non-master up for heroku can be found here

我的gemfile也非常直接：

default: &default
  adapter: sqlite3
  pool: <%= ENV.fetch("RAILS_MAX_THREADS") { 5 } %>
  timeout: 5000

development:
  <<: *default
  database: db/development.sqlite3

test:
  <<: *default
  database: db/test.sqlite3

production:
  <<: *default
  database: db/production.sqlite3

问题

在本地测试我的应用程序后，我决定将其推送到Heroku，但是我无法解决依赖性冲突。

疑似错误：

为数据库适配器指定'sqlite3'，但未加载gem。将source 'https://rubygems.org' git_source(:github) do |repo_name| repo_name = "#{repo_name}/#{repo_name}" unless repo_name.include?("/") "https://github.com/#{repo_name}.git" end ruby '2.4.1' # Use sqlite3 as the database for Active Record gem 'sqlite3', group: :development # Added development group. gem 'pg', group: :production # Added postgres and made it production only. gem 'rails_12factor' # Specifying an exact Ruby version ruby '2.4.1' # Bundle edge Rails instead: gem 'rails', github: 'rails/rails' gem 'rails', '~> 5.1.4' # Use Puma as the app server gem 'puma', '~> 3.7' # Use SCSS for stylesheets gem 'sass-rails', '~> 5.0' # Use Uglifier as compressor for javascript assets gem 'uglifier', '>= 1.3.0' # See https://github.com/rails/execjs#readme for more supported runtimes # gem 'therubyracer', platforms: :ruby # Use CoffeeScript for .coffee assets and views gem 'coffee-rails', '~> 4.2' # Turbolinks makes navigating your web application faster. Read more: https://github.com/turbolinks/turbolinks gem 'turbolinks', '~> 5' # Build JSON APIs with ease. Read more: https://github.com/rails/jbuilder gem 'jbuilder', '~> 2.5' # Use Redis adapter to run Action Cable in production # gem 'redis', '~> 3.0' # Use ActiveModel has_secure_password # gem 'bcrypt', '~> 3.1.7' # Use Capistrano for deployment # gem 'capistrano-rails', group: :development group :development, :test do # Step-by-step debugging and stack navigation in Pry gem 'pry-byebug', platform: :ruby # Pry is a powerful alternative to the standard IRB shell for Ruby gem 'pry-rails' # Pretty print your Ruby objects with style -- in full color and with proper indentation gem 'awesome_print' # Add a comment summarizing the current schema to the top or bottom of each of your ActiveRecord models, Specs, factory_girl factories... gem 'annotate' # Annotate guard runs the annotate gem when needed gem 'guard-annotate', '~> 2.3' # Use for fighting the N+1 problem in Ruby gem 'bullet' # Speedup RSpec + Cucumber by running parallel on multiple CPU cores gem 'parallel_tests' # Call 'byebug' anywhere in the code to stop execution and get a debugger console gem 'byebug', platforms: [:mri, :mingw, :x64_mingw] # Adds support for Capybara system testing and selenium driver gem 'capybara', '~> 2.13' gem 'selenium-webdriver' end group :development do # Access an IRB console on exception pages or by using <%= console %> anywhere in the code. gem 'web-console', '>= 3.3.0' gem 'listen', '>= 3.0.5', '< 3.2' # Spring speeds up development by keeping your application running in the background. Read more: https://github.com/rails/spring gem 'spring' gem 'spring-watcher-listen', '~> 2.0.0' # bundler-audit provides patch-level verification for Bundled apps gem 'bundler-audit', '~> 0.6.0', require: false # Bundler guard allows to automatically & intelligently install/update bundle when needed. gem 'guard-bundler', '~> 2.1', require: false # compare licenses against a user-defined whitelist, and give you an actionable exception report gem 'license_finder', '~> 3.0', '>= 3.0.1', require: false # Brakeman is an open source static analysis tool which checks Rails applications for security vulnerabilities. gem 'brakeman', require: false # Better Errors replaces the standard Rails error page with a much better and more useful error page gem 'better_errors' # necessary to use Better Errors' advanced features gem 'binding_of_caller', platforms: :ruby # RuboCop configuration which has the same code style checking as official Ruby on Rails gem 'rubocop', '~> 0.51.0', require: false gem 'guard-rubocop', require: false # i18n-tasks helps you find and manage missing and unused translations gem 'i18n-tasks', require: false # IYE makes it easy to translate your Rails I18N files and keeps them up to date gem 'iye', require: false # Image Uploader Carrierwave for all kinds of Picture related jobs gem 'carrierwave', '~> 1.0' end group :test do # Guard is a command line tool to easily handle events on file system modifications gem 'guard' gem 'guard-minitest' # This gem brings back assigns to your controller tests as well as assert_template gem 'rails-controller-testing' # To get the default Rails tests to show red and green at the appropriate times gem 'minitest-reporters' # Strategies for cleaning databases in Ruby. Can be used to ensure a clean state for testing. gem 'database_cleaner' # Code coverage for Ruby gem 'simplecov', require: false # Collection of testing matchers extracted from Shoulda gem 'shoulda-matchers' end # Windows does not include zoneinfo files, so bundle the tzinfo-data gem gem 'tzinfo-data', platforms: [:mingw, :mswin, :x64_mingw, :jruby]添加到您的Gemfile

我知道很多帖子都记录了这个问题。我梳理过他们，找到我错过的东西，但无济于事。

这些是我在这个问题上找到的帖子：

gem 'sqlite3'
source 1
source 2

他们基本上都说，看看你将postgresql设置为production并将sqlite3设置为开发数据库，或者使用postgres设置你的项目。

据我所知，我已经涵盖了这一点。

我将我的gemfile设置为使用source 3作为生产数据库，并将pg用作开发数据库，如sqlite3和here所述。

我的gemfile似乎没有sqlite的任何生产代码。

here

当试图运行[57] → gem dependency -R sqlite Gem sqlite3-1.3.13 hoe (~> 3.15, development) hoe-bundler (~> 1.0, development) mini_portile (~> 0.6.2, development) minitest (~> 5.9, development) rake-compiler (~> 0.9.3, development) rake-compiler-dock (~> 0.5.2, development) rdoc (~> 4.0, development) Used by awesome_print-1.8.0 (sqlite3 (>= 0, development)) database_cleaner-1.7.0 (sqlite3 (>= 0, development)) rails-controller-testing-1.0.2 (sqlite3 (>= 0, development)) sass-rails-5.0.7 (sqlite3 (>= 0, development))时，问题开始显现。

这是来自heroku的产生的踪迹：

$ heroku run rake db:migrate