Rails Form & Service Objects using PSQL `:daterange`

controller.rb

class TournamentsController < ApplicationController
  # GET /tournaments/new
  def new
    @form = TournamentSubmissionForm.new
  end

  # POST /tournaments
  def create
    @form = TournamentSubmissionForm.from_params(params)

    SubmitNewTournament.call(@form, current_user) do
      on(:invalid) { render :new }
      on(:ok) { redirect_to tournaments_url, notice: "Tournament was successfully submitted. We'll contact you when it's approved." }
    end
  end
end

form_object.rb

class TournamentSubmissionForm < Rectify::Form
  mimic :tournament

  attribute :name, String
  attribute :city, String
  attribute :state, String
  attribute :start_date, Date
  attribute :end_date, Date
  attribute :headquarters, String
  attribute :target_species, String
  attribute :web_url, String
  attribute :user_role, Integer, default: :none
  attribute :status, Integer, default: :pending

  validates :user_role, :name, :city, :state, :start_date,
            :end_date, :target_species, presence: true

  validate :dates_logic_validation

  def dates_logic_validation
    if start_date < Time.zone.today
      errors.add(:start_date, "must be greater or equal to today's date")
      return false
    elsif start_date > end_date
      errors.add(:end_date, 'must be greater than start date')
      return false
    else
      true
    end
  end
end

service_object.rb

class SubmitNewTournament < Rectify::Command
  def initialize(form, user)
    @form = form
    @user = user
  end

  def call
    return broadcast(:invalid, @form) if @form.invalid?

    transaction do
      create_tournament
      create_staff_member unless form.user_role == 'none'
    end

    broadcast(:ok)
  end

  private

  attr_reader :form, :user

  def create_tournament
    @tournament = Tournament.create(
      name: form.name,
      city: form.city,
      state: form.state,
      tournament_dates: format_dates,
      target_species: form.target_species,
      web_url: form.web_url,
      status: :pending
    )
  end

  def create_staff_member
    @tournament.staff_members.create(user: user, role: form.user_role)
  end

  def format_dates
    "[#{form.start_date.to_date},#{form.end_date.to_date})"
  end
end