Provides basic ORM functionalities like CRUD operations, transaction support, and custom validations.

This gem allows you to download a file. However, it will also check to see if a MD5 file exists at the source and compare against the destination for validation

SQLite constraints in migrations similiar to ActiveRecord validations

ActiveModel-compliant form objects for rails app. Forms have data and behavior. Let them be the objects they want to be. Plus, get presentation- specific validation logic out of your models.

Make ActiveRecord Validation easier to share as Schema

Nested Attributes Validation Collection for Rails

Resulting is a library for graceful result handling. It provides a result class with a few methods that can be used as a mixin. Using these results, they can be passed to save and validation services which handle them gracefully, returning early when there is a failure, or ensuring success for al...

functional classes with param validations for cautious developers

Inspector is a validation library for Ruby with zero assumptions

Command line tool to automate creation of chef orgs, chef policy repositories, and validation key integration with vco

GuideRail transforms various data sources into safe, immutable `Data` objects. By leveraging the robust validation capabilities of `dry-schema`, it provides a clear and declarative way to define, validate, and instantiate your data structures.

Scrivener removes the validation responsibility from models and acts as a filter for whitelisted attributes. Works with Opal.

Provides wrapper functionality and authentication for REST and RPC HTTP requests to OpenSocial-compliant endpoints, along with validation of incoming signed makeRequest calls.

Ruby on Rails plugin for HTML validation and link checking

A small library for manipulating form-based data with validations and attributes coercion.

String, time, file, crypto, array, validation, debug, DSL, formatting and more.

It uses ActiveSupport's String#parameterize to create the slug. There are no validations. No slug history. No extra tables or models.

Allow Paperclip to pass attachments as data-uri on unsaved records. Useful when dealing with forms and validation errors.

A library for parameter validation and parsing. A handy way to check GET/POST params in Ruby webframeworks (like Rails or Sinatra).

A DSL for validating request parameters, raises exceptions when validation failed. Currently only supports Rails.