FiletypeValidation is a Ruby gem for validating file content types.

Defines the skills cards data model and methods to validate whether given data matches this model.

Adds a new validation for ActiveRecord, 'has_unpublished_password'

Add Some SexyValidation.

#assignment >> Getter, #assignment? >> Returns true if assignment is having value other than nil else false, #assignment = >> Setter. Acceptable inputs are file upload(ActionDispatch::Http::UploadedFile), filer handle and String(format validation is ignored), #assignment_path ...

Need a simple, consistent way to create model instances and check validations in your ActiveRecord 3.1+ tests? Use the Modelizer. Just don't trust the docs, since lots changed in 5.x and I got lazy.

Convert statement HTML from the Co-operative bank's online banking system to OFX for import into financial apps. = Usage For a Current Account: 1. Save the HTML source of the statement page. coop_to_ofx --current /path/to/statement.html Will produce /path/to/statement.ofx For a Credit Card:...

Easy validation of deeply-nested hashes

validation error renderer for ajax request

This gem allows to generate JsonSchema thanks to a Builder class or an ActiveRecord serialization class. It can be used in Rails 4, 5 or Ruby standalone projects. The output validation is done agains json-schema.

Mock iTunes receipt validation responses for testing

A simple hash validator that allows you to do complex validations with custom error messages.

Dependency-free object validation library for Ruby 1.8.7+

A component to auto generate seed data with ActiveRecord using a set of predefined or custom rules respecting models validations

Provide validations from ActiveRecord schema information.

Mutations gem interface implemented with `dry-rb`’s validation schemas.

Explicit is a validation and documentation library for REST APIs that enforces documented types at runtime

Dr Nic's Magic Models - Invisible validations, assocations and Active Record models themselves!

RubyBHL is a simple but flexible request/response wrapper for the Biodiversity Heritage Libary API. It includes (some) validation for request formatting. It has excellent unit-test coverage.

I18n::Message is an object-oriented abstraction for looking up translations from I18n.translate. This is useful for storing lookup information in contexts such as ActiveModel validation error I18n.