_organization.html.slim

/ app/views/organizations/signup_modules/_organization.html.slim

= f.fields_for :organization, @resource.build_organization do |org|
  .row
    .col-md-12
      = org.label :name, '* Organization Name'
      = org.text_field :name, validators: { not_empty: true }, autofocus: true

new.html.slim

/ app/views/organizations/new.html.slim

.col-xs-12.content
  h1 Sign-Up Form
  h2 Thanks for your interest in ArkansasGives.
  p Form items indicated with * are required.

  h2 About Your Organization

  = form_for @resource, url: organizations_path, data: { behavior: 'organization_sign_up' }, builder: Core::ValidatableFormBuilder do |f|

    = render 'organizations/signup_modules/organization', f: f

    = render 'organizations/signup_modules/organization_detail', f: f

    = render 'organizations/signup_modules/categories', f: f

    = render 'organizations/signup_modules/counties', f: f

    = render 'organizations/signup_modules/contact', f: f

    = f.submit 'Submit Form', class: 'btn btn-success'

sign_up.rb

# models/core/organization/sign_up.rb
class Core::Organization::SignUp < ActiveType::Object
  attribute :organization
  attribute :organization_detail
  attribute :organization_contact
  attribute :category_ids
  attribute :county_ids

  validates :organization, :organization_detail,
    :organization_contact, presence: true

  validates :category_ids, presence: { message: "Categories can't be blank" }
  validates :county_ids, presence: { message: "Counties can't be blank" }

  validate :valid_organization?
  validate :valid_organization_detail?
  validate :valid_organization_contact?

  before_save :assign_categories
  before_save :assign_counties
  after_save :save_organization

  def build_organization
    @organization ||= ::Organization.new(organization)
  end

  def build_organization_detail
    @organization_detail ||= build_organization.build_organization_detail(
      organization_detail
    )
  end

  def build_organization_contact
    @organization_contact ||= build_organization.build_organization_contact(
      organization_contact
    )
  end

  private

  def save_organization
    build_organization.save
  end

  def assign_categories
    build_organization.category_ids = category_ids
  end

  def assign_counties
    build_organization.organization_county_ids = county_ids
  end

  def valid_organization?
    unless build_organization.valid?
      errors.add(:organization, build_organization.errors.full_messages)
    end
  end

  def valid_organization_detail?
    unless build_organization_detail.valid?
      errors.add(:organization_detail, build_organization_detail.errors.full_messages)
    end
  end

  def valid_organization_contact?
    unless build_organization_contact.valid?
      errors.add(:organization_contact, build_organization_contact.errors.full_messages)
    end
  end
end