Parameter validation extension for Sinatra

Call method_contraints! with the param name and constraint to enforce validation on it

A composable application toolkit, providing data entities and collections, transforms, contract-based validations and pre-built operations. Architecture agnostic for easy integration with other toolkits or frameworks.

Hat-Trick brings together jQuery, validation_group, and Ajax to make multi-step forms awesome. It tries to insulate you from this complexity by providing a simple yet powerful DSL for defining the steps of your form and their behavior.

Cloudformation tasks for apply(create/update), delete, recreate on stack along with validations on templates

Ruby gem that mimics AWS SQS Extended Client with features like S3 offloading, compression, cleanup, validation, and logging.

Official Ruby SDK for the Phone Number Validation & Formatter API by GenderAPI.io. Features: - Validate phone numbers from 240+ countries - Format numbers to E.164 or national format - Detect number type (mobile, landline, VoIP, etc.) - Retrieve region, area code, and co...

A library that sucks... validation errors into an accumulator.

Modular hash validation

ActiveModel validation that two associated models are related to each other.

JSON-LD documents validation

Rails gem that implements an ActiveRecord validation helper called validates_as_postal_code which validates U.S. postal codes

Rails gem that implements an ActiveRecord validation helper called validates_as_phone_number which validates U.S. phone numbers

Create resources with run-time payload type checking and link validation

Simple Input provides a fluent API for creating interactive command-line prompts with validation and conversion support. Inspired by golang's huh! library's input component.

Uidable is a module to add a uid(unique identifier) attribute in your model or class. With ActiveRecord, the presence and uniqueness validations are supported.

Provides a DSL for common validation formats like Date, Array, DateTime etc.

Set a schema, defaults, and validations for your json attributes

ReCaptcha implements view helpers to generate ReCaptcha code, with the noscript counterpart, required methods that interface with the HTTP API for captcha verification, a DSL to generate a before_filter and the code to implement AJAX captcha validation.

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