Why does my rails rollback when I try to user.save?

Why does my rails rollback when I try to user.save?

ruby-on-rails ruby railstutorial.org

ruby

Bundle Install could not fetch specs from https://rubygems.org/

ruby-on-rails ruby gem bundler railstutorial.org

ruby

Rails -- create and create! methods, RoR 3 Tutorial

ruby ruby-on-rails-3 railstutorial.org

ruby

How to solve the update bundler warning in rails when deploying to heroku?

ruby-on-rails ruby heroku bundler railstutorial.org

ruby

$ bundle exec rake db:reset command raising couldn't drop db/development.sqlite3

ruby-on-rails ruby ruby-on-rails-3 sqlite railstutorial.org

ruby

SessionsHelper in railstutorial.org: Should helpers be general-purpose modules for code not needed in views?

ruby-on-rails ruby encapsulation helpers railstutorial.org

ruby

Development.log log file isn't logging Rails SQL queries

ruby-on-rails ruby bash tail railstutorial.org

ruby