Reform + Wicked Integration

after_signup_controller.rb

class AfterSignupController < ApplicationController
  include Wicked::Wizard
  steps :create_organization, :create_event, :create_tiers

  def show
    case step
    when :create_organization
      @form = Form::Organization.new(Organization.new)
    when :create_event
      @form = Form::Event.new(Event.new)
    when :create_tiers
      @form = Form::Tier.new(Tier.new)
    end
    render_wizard
  end

  def update
    case step
    when :create_organization
      @form = Form::Organization.new(Organization.new)
      Service::CreateOrganization.new(@form, params[:organization], current_user).call
    when :create_event
      @form = Form::Event.new(Event.new)
      Service::CreateEvent.new(@form, params[:event], current_user).call
    when :create_tiers
      @form = Form::Tier.new(Tier.new)
      @event = new_org_event
      Service::CreateTier.new(@form, params[:tier], @event).call
    end
    render_wizard @form
  end

  def finish_wizard_path
    event_path(new_org_event)
  end

  private

  def new_org_event
    @event ||= Organization.includes(users: :events).find_by('users.id' => current_user.id).events.first
  end
end

form_event.rb

module Form
  class Event < Reform::Form
    model :event

    property :title
    property :desc
    property :creator

    validates :title, :desc, :creator, presence: true
  end
end

service_create_event.rb

module Service
  class CreateEvent
    def initialize(form, params, user)
      @form, @params, @user = form, params, user
    end

    def call
      form.save if form.validate(params.merge(creator: user))
      form.model
    end

    private

    attr_reader :form, :params, :user
  end
end