Explore how models and associations in Ruby on Rails provide an object-oriented interface to relational databases, automate common tasks, and speed up web application development.
Overview
Syllabus
Introduction
- Efficient, object-oriented data management
- What you should know
- Using the exercise files on GitHub
- Smart models by design
- More ActiveRecord query methods
- Select data from a query
- Named scopes
- Non-database attributes
- Overview of validation methods
- Write validations
- Use the multipurpose validates method
- Write custom validations
- Overview of callbacks
- Use callbacks to automate actions
- Execute callbacks conditionally
- Overview of associations
- Create a one-to-many association
- Use a one-to-many association
- Destroy dependent related records
- Has and belongs to many associations
- Rich join associations
- Traverse a rich join association
- Join tables during queries
- Next steps
Taught by
Kevin Skoglund
