Verify the existence of an email address.

ActiveRecord dirty tracking that compares every attribute to it's value before type cast and marks all changes detected as changed attributes. This makes it possible to detect `user.name.upcase!` `user.roles << 'some_role'` and similar implicit changes. To make it automatic on ...

Package of validations commonly used in Defra Rails based digital services

Process parameters base on OpenApi3 JSON documentation, such as: validation and type conversion

Valid form submission based on the HTML5 validation on the form itself

DB of burner email domains. Use as one of the steps in your email validations.

CouchSurfer provides an ORM for CouchDB, as well as supporting association and validation declarations.

Rails gem/plugin that implements a series of ActiveRecord validation helpers

Get the power of ActiveRecord models, including validation, without having a table in the database.

Flatter transforms a deeply nested graph of ActiveModel-like objects to a single mapper object that handles all the nested attributes and has a very flexible behavior for handling validation, saving routines with a DRY approach.

This RubyGem allows you to prevent particular database fields from being changed after an Active Record object is created. A validation error occurs on updates if an attribute of a model object is different from its value in the database.

rails-fields gem provides robust field type enforcement for ActiveRecord models in Ruby on Rails applications. It includes utility methods for type validation, logging, and field mappings between GraphQL and ActiveRecord types Custom error classes provide clear diagnostics for field-r...

Manages permalink columns in active record models. Strips special characters and spaces, creates before validation, assures uniqueness. That kind of thing.

Rulix lets you fold complex rulesets onto complex data structures; useful for validation, data sanitization, and mutation.

Input validation DSL and support classes for the Jet Toolkit.

We can validate CPF and CNPJ formats and verifying digits.

A clean, immutable Ruby interface for working with piece identifiers in PNN format. PNN provides a consistent and rule-agnostic notation for representing pieces in abstract strategy board games like chess, shogi, and xiangqi. Features include state modifiers for enhanced/diminished/intermediate p...

Zero-dependency Ruby utilities for: • checksum validation (modulus-11), • component decoding (category, office_code, district_code, sequence), • random valid ID generation, • human-readable category descriptions.

thai_qr_pay is a Ruby gem providing: - ASCII-numeric TLV parsing and encoding - EMVCo CRC-16/IBM-SDLC checksum computation and validation - Generators for PromptPay AnyID, PromptPay Bill Payment, TrueMoney, etc. - Validators for slip-verify and TrueMoney slip verify payloads - BOT barcode → EMVCo...

Use Ruby code to generate JSON schemas with intelligent defaults, validation, and versioning.