This tutorial covers basic commands for cloning and running HwProj on a Linux/macOS machine. Windows environment may differ and is not covered here.
Install Ruby with ruby-install, it's easier to work with than with RVM. We curretly use Ruby 2.2.3. chruby switches Ruby versions automatically when .ruby-version file is present.
Run gem install bundler. Bundler is used to install all needed gems (Ruby libraries) for a project.
Run echo "gem: --no-document" >> ~/.gemrc if you want to skip local documentation install which can speed up gems installation.
Fork the repo on GitHub.
git clone git@github.com:auduchinok/hwproj.git
# and add a git remote for your fork
# change the working directory to the project
cd hwproj
# install gems specified in the project Gemfile
bundle install --without production
# set up a new database
rake db:migrate# launch a local server
rails s
# launch ruby console with loaded app
rails c# find last user and show the name
User.last.name
# another way
u = User.all[-1]
u.name
# make the user a teacher
u.teacher!
# check whether a user is a teacher (and check if user exist, i.e. not nil)
User.find(5).teacher? unless User.find(5).nil?