I decided to install the postgresql database, but the gem file is not installed in any way, what should I do?

Question

Ruby on Rails

the gem itself is added to the gemfile, but not bundle install, not gem install pg, even with the version specified, it doesn’t plow either, what’s the problem?

Answer 1

sudo apt-get install libpq-dev
+

sudo apt-get install postgresql-client
sudo apt-get install postgresql postgresql-contrib

ps: this is from the first link in google. If it doesn't work, try the second one.

Answer 2

group :production do
gem 'pg', '0.17.1'
end
bundle install --without production
Found a solution