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rails-models

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ActiveRecord patterns, migrations, validations, callbacks, associations

lib/generators/claude/skills_library/rails-models/SKILL.md

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claude Repository topic
claude-skills Repository topic
rails Repository topic
ruby Repository topic
ruby-gem Repository topic
skills Repository topic
activerecord Declared skill tag
models Declared skill tag
database Declared skill tag
orm Declared skill tag
data Derived category
data-databases Derived category

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# Rails Models (ActiveRecord)

## Quick Reference

| Pattern | Example |
|---------|---------|
| **Model Generation** | `rails g model User name:string email:string` |
| **Migration** | `rails g migration AddAgeToUsers age:integer` |
| **Validation** | `validates :email, presence: true, uniqueness: true` |
| **Association** | `has_many :posts, dependent: :destroy` |
| **Callback** | `before_save :normalize_email` |
| **Scope** | `scope :active, -> { where(active: true) }` |
| **Query** | `User.where(active: true).order(created_at: :desc)` |