babelian/parametric-active_model

Turn Parametric schemas into ActiveModel-compliant forms

Parametric::ActiveModel (WiP)

Turn Parametric schemas into ActiveModel-compliant form objects, including validations.

Usage

Define your forms.

require 'parametric/active_model'

class User < Parametric::ActiveModel
  schema do
    field(:name).type(:string).present
    field(:friends).type(:array).schema do
      field(:name).type(:string).present
      field(:age).type(:integer)
    end
  end

  def save!
    # do something here
  end
end

Now use it in Rails controllers:

def new
  @user = User.new
end

def create
  @user = User.new(params[:user])
  @user.save!
end

Views work normally:

<%= form_for @user do |f| %>
  <%= f.text_field :name %>
  <!-- nested objects -->
  <%= f.fields_for :friends do |friend| %>
    <%= friend.text_field :name %>
    <%= friend.text_field :age %>
  <% end %>
<% end %>

Nested forms

You can also use nested form objects:

class Friend < Parametric::ActiveModel
  schema do
    field(:name).type(:string).present
    field(:age).type(:integer)
  end
end

# now embed it in the parent form

class User < Parametric::ActiveModel
  schema do
    field(:name).type(:string).present
    field(:friends).type(:array).schema Friend # <== here!
  end

  # etc..
end

Installation

Add this line to your application's Gemfile:

gem 'parametric-active_model'

And then execute:

$ bundle

Or install it yourself as:

$ gem install parametric-active_model

Usage

TODO: Write usage instructions here

Development

After checking out the repo, run bin/setup to install dependencies. Then, run rake spec to run the tests. You can also run bin/console for an interactive prompt that will allow you to experiment.

To install this gem onto your local machine, run bundle exec rake install. To release a new version, update the version number in version.rb, and then run bundle exec rake release, which will create a git tag for the version, push git commits and tags, and push the .gem file to rubygems.org.

Contributing

Bug reports and pull requests are welcome on GitHub at https://github.com/[USERNAME]/parametric-active_model.

License

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