To-Do List App put together as a beginner Sinatra with Data Mapper example before mentoring at Codebar - Mind the Code
clone the repo and cd into it
Make sure you have Ruby installed https://www.ruby-lang.org/en/downloads/
gem install bundler
bundle install
Download and install PostgreSQL Add a development database:
$ createdb developmentStart the local server
rackup
Navigate to http://localhost:9292/todo
To query/add stuff to the db using the command line (make sure you cd into the root directory:
pry
require './server'
Todo.all
Todo.create
Todo.get(1)
etc
More here http://cheat.errtheblog.com/s/datamapper