wedding-planner/app/controllers/tables_arrangements_controller.rb

# Copyright (C) 2024 Manuel Bustillo

class TablesArrangementsController < ApplicationController
  def index
    render json: TablesArrangement.all.order(discomfort: :asc).limit(10).as_json(only: %i[id discomfort])
  end

  def show
    Seat.joins(:guest).where(tables_arrangement_id: params[:id])
        .pluck(:table_number, Arel.sql("guests.first_name || ' ' || guests.last_name "), 'guests.id')
        .group_by(&:first)
        .transform_values { |table| table.map { |(_, name, id)| { id:, name: } } }
        .map { |number, guests| { number:, guests: } }
        .then { |result| render json: result }
  end
end