Wrong provides a general assert method that takes a predicate block. Assertion failure messages are rich in detail. The Wrong idea is to replace all those countless assert_this, assert_that library methods which only exist to give a more useful failure message than "assertion failed". Wrong repla...

Small DSL to create ActiveRecord (>= 3.1) attribute predicates without writing SQL.

Use arel predicates directly from where.

== Terminal UIs, the Ruby Way RatatuiRuby[https://rubygems.org/gems/ratatui_ruby] is a RubyGem built on Ratatui[https://ratatui.rs], a leading TUI library written in Rust[https://rust-lang.org]. You get native performance with the joy of Ruby. gem install ratatui_ruby {rdoc-image:https://ra...

A chainable guard clause DSL for validating method preconditions with built-in checks for nil, empty, numeric bounds, type checking, range, length, regex matching, inclusion, custom predicates, string prefix/suffix, and soft mode error collection.

A tiny utility for concise error handling. Wrap risky expressions with Try.call, chain fallbacks with or_else and or_try, filter with predicates, handle specific exceptions, use Ruby 3.x pattern matching, and add timeout constraints — all without verbose begin/rescue blocks.

Extends ActiveRecord with the has_enumeration method allowing a symbolic enumeration to be stored in an ActiveRecord attribute. The enumeration is specified as a mapping between symbols and their underlying representation in the database. Predicates are provided for each symbol in the enumerati...

A DataMapper adapter for Amazon's SimpleDB service. Features: * Full set of CRUD operations * Supports all DataMapper query predicates. * Can translate many queries into efficient native SELECT operations. * Migrations * DataMapper identity map support for record caching * Lazy-loaded att...

Quickly define model state predicates and scopes at the same time.

Conditional UI predicates for Rails - a clean and simple approach to separate business logic from your views and models.

Conditions searching using predicates such as 'name_cont' or 'created_at_gt' for elasticsearch models

SafeMemoize is a production-ready, zero-dependency memoization library for Ruby. It uses Ruby's prepend mechanism to wrap methods with a thread-safe cache (Mutex + double-check locking) that correctly handles nil and false return values — fixing the silent bug in the common ||= pattern. Results a...

ToggleFleet is a hosted feature-flag service for Ruby. This gem fetches your environment's flags once, refreshes them in the background with conditional ETag requests, and evaluates all five gates — boolean, actor, group, percentage-of-actors (sticky), and percentage-of-time — entirely in-process...

By defining predicate methods which are, with the addition of '?', named the same as state machine events, and then configuring an in memory or cron-based event loop, the state machine will change state automatically.

Check whether an ActiveRecord instance satisfies the conditions of a relation, in memory

Provides a predicate that checks whether your machine is currently online or offline, which may be useful for unit and integration tests.

r_cal is a fast CLI tool for Google Calendar with natural language date parsing, event management, ICS import, and predicate filtering. Built with cli-kit for snappy performance.

Declare prompts as Ruby classes with versioned configurations, route traffic by percentage or predicate, record telemetry, and automatically roll back misbehaving versions.

MetaWhere offers the ability to call any Arel predicate methods (with a few convenient aliases) on your Model's attributes instead of the ones normally offered by ActiveRecord's hash parameters. It also adds convenient syntax for order clauses, smarter mapping of nested h...

Pdfrb is a pure-Ruby PDF library: a byte-level reader, an Arlington-model-driven typed domain model, and a serializer. The PDF object model is sourced directly from the vendored Arlington PDF Model TSVs (machine-readable ISO 32000-2:2020), so field metadata, version predicates, and validators sta...