ActiveRecord Repository

This is an implementation of the repository pattern for ActiveRecord. Using this allows splitting the domain model and persistence classes.

WARNING: This is currently merely a proof of concept. This means that testing and refactoring have often been put on the back burner.

TODO

• Loading
  • Loading relations
    • Avoiding N+1 queries
• Saving
  • Saving relations
• Keep a registry of the repository classes
  • Indexed by the classes they map to
  • Use this to find repository class for relations
    • Caveat: What if there are 2 repositories for a relation we're looking for?
      • Need a way to specify that somewhere
        • In the repository is the only place that makes sense
• Probably need to restrict other calls to Repository
  • User::Repository.create
• Entity#initialize and #update should basically be the same
  • Maybe the only difference is that initialize will set things to nil
  • They could use a lot of refactoring
• Relations between entities
  • belongs_to
  • has_many
  • has_one
  • has_many through:
  • Cascading deletions
• Entity#changed?
• Identity mapping
• Use module builder pattern in ActiveModel.entity
  • Add more options
• Use module factory (and module builder) pattern in ActiveRecord.repository
  • Add options
    • Setting entity class
    • Setting table_name
    • Setting a different primary key than id
    • Maybe define indexes
• More validations