Cascade Delete Rules from a Resource

[LinnierGames]

If a User is deleted, so are all of the trips. If a trip is deleted so are all of the hotels and sites.

Docs here: http://edgeguides.rubyonrails.org/association_basics.html

Also, add null and default values to the table creation. So far only the Ruby models validate the presence of properties. But, using null and default modifiers will ensure columns are not blank.

http://edgeguides.rubyonrails.org/active_record_migrations.html#column-modifiers

TODO

• [ ] Delete Rules to:
  • Users
  • Trips
• [ ] Null and Default modifiers to the following tables:
  • Users
  • Trips
  • Hotels
  • Sites (which inhertints from Hotels)