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rails-validations

Enforce built-in, custom, and conditional validations on Rails ActiveRecord models.

4|2|Updated Dec 12, 2025
Search Tags:#data-integrity#validations#rails#active-record#custom-validations#conditional-validations
One-click install
npx skills add https://github.com/rubakas/agent-notes --skill rails-validations
Or copy as Structured Prompt for Agent▼
Please help me install this Agent Skill.
Skill: rails-validations
Source: https://github.com/rubakas/agent-notes/tree/main/rails-validations
Command: npx skills add https://github.com/rubakas/agent-notes --skill rails-validations

SYSTEM DOCUMENTATION & REQUIREMENTS

What problem does it solve?

Ensures data integrity in Rails models by enforcing presence, format, uniqueness, and custom rules before saving ActiveRecord models.

Core Features & Use Cases

  • Built-in validations: presence, uniqueness, format, length, inclusion
  • Custom validations: method-based validation and validator class
  • Conditional validations: if/unless/on

Quick Start

Run validations in your Rails models by copying the patterns shown and running your test suite to verify behavior.

Frequently Asked Questions about rails-validations

High-intent search queries and answers about installing and using this skill.

FAQPage Schema
How do I add custom validations to Rails ActiveRecord models?▼

To add custom validations in Rails, you can use method-based validation or create a validator class, ensuring data integrity by enforcing specific rules before saving ActiveRecord models.

What are conditional validations in Rails and when should I use them?▼

Conditional validations in Rails use if, unless, and on options to apply rules only during specific contexts like create or update, ensuring data integrity by enforcing rules when needed.

How do I enforce data integrity with built-in Rails validations?▼

You enforce data integrity by applying built-in Rails validations like presence, uniqueness, format, length, and inclusion to ActiveRecord models before saving records to the database.

Can I validate uniqueness and format in Rails across create and update contexts?▼

Yes, Rails validations support uniqueness and format checks across create and update contexts by using the on option to specify when the validation rules should be applied.

Do I need tests to verify Rails model validations?▼

Yes, a Rails project with ActiveRecord models requires accompanying tests to demonstrate correct behavior and verify that presence, uniqueness, and custom validation rules work properly.

What is the best way to make Rails models bulletproof against invalid data?▼

The best way to make Rails models bulletproof is by combining built-in, custom, and conditional validations to enforce data integrity before saving ActiveRecord models.

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