[英]Deploy a rails app using MySQL to Heroku using ClearDB addon
I have a Rails app called "enrollment_app" that initializes and populates all the tables in the database with a MySQL seed file. 我有一个名为“enrollment_app”的Rails应用程序,它使用MySQL种子文件初始化并填充数据库中的所有表。 I built the app, added some migrations and pushed my app to Heroku.
我构建了应用程序,添加了一些迁移并将我的应用程序推送到Heroku。 However, since Heroku uses Postgres, I need a way to make my MySQL database compatible with Heroku so I am using the ClearDB addon.
但是,由于Heroku使用Postgres,我需要一种方法让我的MySQL数据库与Heroku兼容,所以我使用的是ClearDB插件。
When I try to open the app though, I get the message: 当我尝试打开应用程序时,我收到消息:
Application Error
An error occurred in the application and your page could not be served. Please try again in a few moments.
If you are the application owner, check your logs for details.
So, I checked the logs and see this error: 所以,我检查了日志并看到了这个错误:
PG::UndefinedTable: ERROR: relation "enrollments" does not exist
I've been following along with this tutorial but apparently I don't know how to make ClearDB look like my local MySQL DB since I'm getting that error above. 我一直在关注这个教程,但显然我不知道如何使ClearDB看起来像我的本地MySQL数据库,因为我上面得到了这个错误。 How can I do the equivalent of
rake db:seed
the MySQL seed file and rake db:migrate
to the production ClearDB database? 我怎样才能相当于
rake db:seed
MySQL种子文件和rake db:migrate
到生产ClearDB数据库?
Updated - Gemfile: 更新 - Gemfile:
source 'https://rubygems.org'
gem 'rails', '4.2.1'
gem 'mysql2'
gem 'sass-rails', '~> 5.0'
gem 'uglifier', '>= 1.3.0'
gem 'coffee-rails', '~> 4.1.0'
gem 'jquery-rails'
gem 'turbolinks'
gem 'jbuilder', '~> 2.0'
gem 'sdoc', '~> 0.4.0', group: :doc
gem 'bootstrap-sass', '~> 3.3.5'
gem 'bootswatch-rails'
gem 'ransack'
gem 'jquery-turbolinks'
gem 'kaminari'
gem 'bootstrap-kaminari-views'
gem 'jquery-ui-rails'
gem 'espinita'
gem 'mysqltopostgres', git: "https://github.com/maxlapshin/mysql2postgres.git"
group :development, :test do
gem 'byebug'
gem 'web-console', '~> 2.0'
gem 'spring'
gem 'rspec-rails'
gem 'launchy'
gem 'pry'
gem 'pry-nav'
gem 'shoulda-matchers'
gem 'factory_girl_rails'
gem 'capybara'
gem 'newrelic_rpm'
gem 'poltergeist'
gem 'database_cleaner'
end
group :production do
gem 'rails_12factor'
end
This isn't an issue with ClearDB per se, it looks like you haven't fully divorced from the PostgreSQL defaults. 这不是ClearDB本身的问题,看起来你还没有完全脱离PostgreSQL默认值。 I'd check:
我检查一下:
pg
defined in your Gemfile? pg
? it shouldn't be. mysql2
is present. mysql2
存在。 Once your Heroku app can connect to the ClearDB database properly, you should be able to set up the database itself with no issues: 一旦您的Heroku应用程序可以正确连接到ClearDB数据库,您应该能够自行设置数据库而不会出现任何问题:
heroku run rake db:create
heroku run rake db:migrate
heroku run rake db:seed
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