Heroku deployment failed because of sqlite3 gem error

Question

I just started the ruby.railstutorial.org book by Michael Hartl and have been working through the first chapter. I am using mac book OS X, Terminal, and Sublime Text. Every

Answer 1

Heroku do not support sqlite3...

Remove sqlite3 from your Gemfile, use pg gem instead. Do following change in gem file

change following in your Gemfile

gem 'sqlite3'

to

gem 'pg' #you will have to install postgresql

Important: Run

git add .
git commit 
git push heroku master

Note: If you are planning to deploy for heroku, I suggest it is better to use postgres in your development phase also(install postgresql in your computer), heroku prefer psql.

If you want to use sqllite for development and postgresql for Heroku, use following config.

group :development do 
   gem 'sqlite3'    #gem to use in development environment
end

group :production do 
  gem 'pg'         #gem to use in production environment
end

Heroku will use pg gem since heroku run your application in production enviroment