411 REFERENCE · Wikibooks
Ruby on Rails/ActiveRecord
Reference material by Wikibooks contributors. This retains its source identity and is not 411 news reporting.
ActiveRecord - The Model
/Naming/
See the way the models are named and what names to avoid
/Migrations/
How to get your data inside the database in a convenient way
/Associations/
Connect different models together
/Callbacks/
Read about how to manipulate your data at certain states of their existence
/Validations/
Check your input for their correctness
/Attributes/
How to look up different criteria without writing SQL
/Aggregations/
Write advanced aggregations inside your model
/Calculations/
Do basic mathematical calculations with your data
/acts_as/
Extend functionality with acts_as
/Timestamps/
/Connection adapters/