debug params
rails generate scaffold company name:string abbrev:string
rails generate scaffold station company_id:integer name:string
connect company to stations
rake db:migrate
train scaffold

rails generate scaffold train company_id:integer rank:string \
name:string number:string date:date clockwise:boolean \
origin_id:integer destination_id::integer
connect trains to companies and stations
travel scaffold

rails generate scaffold travel train_id:integer \
depart_from_id:integer depart_at:datetime \
arrive_to_id:integer arrive_at:datetime
connect travels to train and station
rake db:migrate
rake task: import:trains

also create stations while import trains
change time zone to Taipei
update views
rails generate controller top index search_station search_train
root to top#index
search stations
station timetable
train show
stations show: support date selection
search train