Nested Forms

cocoonRuby

A Rails gem for dynamically adding and removing nested forms using jQuery, compatible with Formtastic, SimpleForm, and default forms.

ReformRuby

A Ruby form object library that decouples forms from models, providing validation, nesting, and composition.

Backbone-formsJavaScript

A flexible, customizable form framework for Backbone.js applications with nested forms, editable lists, and validation.

Nested FormRuby

A Rails gem for managing multiple nested models in a single form with dynamic add/remove functionality.