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我有一个 Sinatra DataMapper 应用程序访问我试图部署到 Heroku 的 sqlite3 数据库。第一遍，我将我的数据库文件包含在 git repo 中。这在应用程序运行时有效，但生产数据不属于存储库。但它并没有真正起作用，因为数据库是只读的。

然后我删除了用于源代码控制的 db 文件并尝试了heroku db:push sqlite://db/my-app.db. 此命令产生以下 stact 跟踪：

my-app/(master) ~ heroku db:push sqlite:://db/my-app.db 
Sending schema
/Library/Ruby/Gems/1.8/gems/taps-0.2.19/lib/taps/../../bin/../lib/taps/schema.rb:30:in `sqlite_config': undefined method `[]' for nil:NilClass (NoMethodError)
    from /Library/Ruby/Gems/1.8/gems/taps-0.2.19/lib/taps/../../bin/../lib/taps/schema.rb:24:in `create_config'
    from /Library/Ruby/Gems/1.8/gems/taps-0.2.19/lib/taps/../../bin/../lib/taps/schema.rb:36:in `connection'
    from /Library/Ruby/Gems/1.8/gems/taps-0.2.19/lib/taps/../../bin/../lib/taps/schema.rb:43:in `dump'
    from /Library/Ruby/Gems/1.8/gems/taps-0.2.19/lib/taps/../../bin/../lib/taps/schema.rb:52:in `dump_without_indexes'
    from /Library/Ruby/Gems/1.8/gems/taps-0.2.19/lib/taps/../../bin/schema:24
Sending data
0 tables, 0 records
Sending indexes
/Library/Ruby/Gems/1.8/gems/taps-0.2.19/lib/taps/../../bin/../lib/taps/schema.rb:30:in `sqlite_config': undefined method `[]' for nil:NilClass (NoMethodError)
    from /Library/Ruby/Gems/1.8/gems/taps-0.2.19/lib/taps/../../bin/../lib/taps/schema.rb:24:in `create_config'
    from /Library/Ruby/Gems/1.8/gems/taps-0.2.19/lib/taps/../../bin/../lib/taps/schema.rb:36:in `connection'
    from /Library/Ruby/Gems/1.8/gems/taps-0.2.19/lib/taps/../../bin/../lib/taps/schema.rb:43:in `dump'
    from /Library/Ruby/Gems/1.8/gems/taps-0.2.19/lib/taps/../../bin/../lib/taps/schema.rb:62:in `indexes'
    from /Library/Ruby/Gems/1.8/gems/taps-0.2.19/lib/taps/../../bin/schema:26
Resetting sequences

知道可能是什么原因造成的，我该如何解决？

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Heroku 需要一个 schema.rb 来“准备”将通过heroku db:push. 我生成了一个schema.rb通过导轨。将其部署到heroku，然后数据库推送工作。

于 2009-10-30T03:12:19.530 回答