Validations for Ruby objects

Valentine is a simple validation library for JSON and ordinary Hash based on an easy Hash based syntax.

Rails gem/plugin that implements an ActiveRecord validation helper called validates_as_date_time which validates U.S. dates, times, and date-times

Validating-Workflow is a finite-state-machine-inspired API for modeling and interacting with what we tend to refer to as 'workflow'. * nice DSL to describe your states, events and transitions * robust integration with ActiveRecord and non relational data stores * various hooks fo...

This is an alpha version. Create a class implements from FluentValidator, then use rule_for method to register validators in its construction method.

contextual validations for controllers and wanna learn to do other stuff good too

DSL for variable scoping / encapsulation for readability and organisation, by means of block indents and explicit variable declarations. Useful when organising complex conditions such as procs (case-in-point: complex `... if: -> {}` Rails model validations

A lightweight Web Function client for Ruby. Web Function is a radical rethinking of API design: no verbs, no nested URLs, no bloat. Just function calls over HTTP. This gem lets you invoke endpoints defined in a package, with full support for argument validations, error triples, and bearer auth.

Add a validation headers filter to your rails controller.

Validate an email address using RFC 822 pattern match regex regular expressions

Basic document validation

This gem allows model to have state, and based on that create wizard with step by step validations

Checksum validation for New Zealand IRD numbers. See http://www.ird.govt.nz/how-to/irdnumbers/ for details of what an IRD is.

Tiny implementation of the command pattern, including input validation, using Scrivener.

FormGuard provides a simple way to prevent bot form submissions in Rails applications using honeypot fields and timestamp-based validation.

Simple actions and complex forms with validations, nesting, etc.

YAML Easy Schemas it a straight-foward but powerful YPath-based schema format and validation program for YAML documents.

Library for validation of czech bank account numbers

A gem for id and passport validation.

Language Independent Validation Rules