ActiveObjects

Form objects for Ruby on Rails.

• Works with ActiveRecord
• i18n support
• Easy to implement

Installation

Add this line to your application's Gemfile:

gem 'active_objects'

And then execute:

$ bundle

Usage

Rails:

Create first form object

Create a forms directory, for example: app/forms and create your first form object there:

class ProductForm < ActiveObjects
  validates :name, presence: true
 
  private
 
  def object_class
    Product
  end
 
  def permitted_attributes
    %i[name]
  end
end

Where object_class (for model class) and permitted_attributes (for model attributes from the form) are required methods.

To load forms, add this line to config/application.rb

    config.autoload_paths << Rails.root.join('app/forms/**/')

In the form object you have access to all ActiveModel validations

Update your controller actions

  def new 
    @product_form = ProductForm.new
  end
  
  def edit
    product =  Product.find(params[:id])
    @product_form = ProductForm.new(product)
  end
 
  def create
    @product_form = ProductForm.new(product_params)
    if @product_form.save
      redirect_to products_path
    else 
      render :new
    end
  end
 
  def update
    product = Product.find(params[:id])
    @product_form = ProductForm.new(product)
    if @product_form.update(product_params)
      redirect_to products_path
    else
      render :edit
    end
  end

Update your views

New:

= form_for(@product_form, url: products_path, method: :post) do |f|
  = f.text_field :name
  %small= f.object.errors[:name]&.first 
  = f.submit

Edit:

= form_for(@product_form, url: product_path(@product), method: :patch) do |f|
  = f.text_field :name
  %small= f.object.errors[:name]&.first
  = f.submit

i18n

Activeform uses standard ActiveRecord i18n scope for error messages and model names and attributes.

en:
  activerecord:
    attributes:
      Product:
        name:  Name
        price: Price
    models:
      product:
        one: Product 
        other: Products 

Contributing

Bug reports and pull requests are welcome on GitHub at https://github.com/kamilsdz/active_objects. This project is intended to be a safe, welcoming space for collaboration, and contributors are expected to adhere to the Contributor Covenant code of conduct.

License

The gem is available as open source under the terms of the MIT License.

Code of Conduct

Everyone interacting in the Activeform project’s codebases, issue trackers, chat rooms and mailing lists is expected to follow the code of conduct.