检测到 Heroku 不支持的 sqlite3 gem

Question

I'm trying to push my rails app to Heroku, and I keep getting the following error:

       An error occurred while installing sqlite3 (1.3.8), and Bundler cannot continue.
   Make sure that `gem install sqlite3 -v '1.3.8'` succeeds before bundling.
!
!     Failed to install gems via Bundler.
!     
!     Detected sqlite3 gem which is not supported on Heroku.
!     https://devcenter.heroku.com/articles/sqlite3
!

!     Push rejected, failed to compile Ruby app

Here is what my gemfile looks like:

group :devlopment, :test do
  gem 'sqlite3'
end

group :production do
  gem 'pg'
end

Any ideas on how to fix this? Any help is much appreciated!

Answer 1

I have modified the gem file to use sqlite only on development, and test.

But, my mistake was: I have forgotten to commit the changes on git.

Answer 2

You have a typo:

group :development, :test do # <<<< :development, not devlopment
  gem 'sqlite3'
end

As heroku ignores development specific gems, when running the bundle it includes sqlite3 gem.

Answer 3

Try using this for production

group :production do
  gem 'pg', '0.15.1'
  gem 'rails_12factor'
end

Additional information can be found here: https://devcenter.heroku.com/articles/sqlite3

Answer 4

For me I solve this issue by replacing gem 'sqlite3' with gem "pg" in the gemfile

and then ofcourse heroku restart and heroku rake db:migrate

Answer 5

Try this

heroku rake db:reset
heroku rake db:migrate