- presence: true is redundant since Rails 5.0 BUT applies
with new default config of
belongs_to_required_by_default to true.
Lots of files with belongs_to_required_by_default = false
(backward compatibility).
So: deleting this setting implies to adding optional: true
- added 'NOT NULL' constraints so model constraints match
with contraints on DB tables.
- corresponding migration files to match AR Models &
DB tables
- rake tasks to check corrupt data (ie: NULL/nil in id fields)
(previous commit)
- updated the todo
4bb996e77f