ruby-on-rails - Heroku、Rails:PG::SyntaxError

Question

在 heroku 上的 Rails 5.1 应用程序中加载架构时，引发了以下异常:

ActiveRecord::StatementInvalid: PG::SyntaxError: ERROR: syntax error at or near "ENGINE" LINE 1: ...estamp NOT NULL, "updated_at" timestamp NOT NULL) ENGINE=Inn...

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详细信息:

追踪

-- create_table("ads_dashboard_campaigns", {:force=>:cascade, :options=>"ENGINE=InnoDB DEFAULT CHARSET=utf8"})
   (5.0ms)  DROP TABLE IF EXISTS "ads_dashboard_campaigns" CASCADE
   (7.3ms)  CREATE TABLE "ads_dashboard_campaigns" ("id" bigserial primary key, "created_at" timestamp NOT NULL, "updated_at" timestamp NOT NULL) ENGINE=InnoDB DEFAULT CHARSET=utf8
rails aborted!

config/database.yml

# # SQLite version 3.x
# #   gem install sqlite3-ruby (not necessary on OS X Leopard)
# development:
#   adapter: sqlite3
#   database: db/development.sqlite3
#   pool: 5
#   timeout: 5000

# # Warning: The database defined as "test" will be erased and
# # re-generated from your development database when you run "rake".
# # Do not set this db to the same as development or production.
# test:
#   adapter: sqlite3
#   database: db/test.sqlite3
#   pool: 5
#   timeout: 5000

production:
  adapter: sqlite3
  database: db/production.sqlite3
  pool: 5
  timeout: 5000


# Custom stuff
development:
  adapter: mysql2
  encoding: utf8
  pool: 5
  database: slooob_development
  username: root
  password: 0402Jonas
  port: 3306

test:
  adapter: mysql2
  encoding: utf8
  pool: 5
  database: slooob_test
  username: root
  password: 0402Jonas
  port: 3306

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旁注:我知道 Heroku 使用 PostgreSQL 数据库，但在将开发和测试数据库设置为 MySQL 之前，使用默认设置进行生产已经有效。我还尝试将适配器设置为 postgresql。

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我做错了什么？

Answer 1

您的数据库模式是在 Mysql 数据库上生成的，并且包含 Mysql 特定的选项。在您的情况下，它是 ENGINE 选项。我不确定它是自动生成的还是您手动将这些选项添加到迁移中。

尝试运行迁移而不是加载架构:

heroku run rake db:migrate

您还可以在 Heroku 上使用 Mysql。您需要添加适当的插件。