Opt-in validations for your ActiveRecord models based on your MySQL database constraints, including text field size, UTF-8 encoding issues, and NOT NULL constraints.

Handles application errors and model validations

Ruby gem for runtime data validation and monitoring using the contracts approach.

ActiveModel validation that checks email addresses against a blacklist of trash-mail providers

LHS ia a Rails-Gem, providing an ActiveRecord like interface to access HTTP-JSON-Services from Rails Applications. Special features provided by this gem are: Multiple endpoint configuration per resource, active-record-like query-chains, scopes, error handling, relations, request cycle cache, batc...

Validate iTunes Transaction and Unified style receipts with local decoding and remote validation.

Easily add Judge client side validation to your SimpleForm forms.

Provide validation/generation for UPC/EAN/GTIN numbers

Checks required env variables and its format using dotenv and .env.sample files. Sample files include validation documentation which is interpreted and used to validate your environment.

Provides a form field validation JavaScript library for your Rails application. Built for use with jQuery and Twitter Bootstrap 3. Source code: https://github.com/nghuuphuoc/bootstrapvalidator

Membrane provides an easy to use DSL for specifying validation logic declaratively.

This library helps validate attributes to specific types in the same way that ActiveModel valiations work. Able to chain additional modifiers to each validation.

A Ruby Library for dealing with validation cryptocurrency adresses.

This gem can parse values, validations, documentation, types, groups and conditions of parameters from your puppet modules

pure ruby PNG file manipulation & validation

Access environment variables. Also includes presence validation, type coercion and default values.

== DESCRIPTION: GOSS is a tool for validating a server's configuration. This kitchen plugin adds Goss support as a validation to test-kitchen. == FEATURES:

ruby client library for the validator.nu HTML5 validation API

Gem includes validations, card brand detection method, etc.

Makes ActiveRecord defer/postpone saving the records you add to an habtm (has_and_belongs_to_many) or has_many association until you call model.save, allowing validation in the style of normal attributes. Additionally you can check inside before_save ...