obdev/app/controllers/participants_controller.rb

class ParticipantsController < ApplicationController
  before_action :set_participant, only: [:show, :edit, :update, :destroy]
  
  def index
    @participants = Participant.all
  end

  def show
  end

  def new
    @participant = Participant.new
  end

  def create
    @participant = Participant.new(participant_params)
  
    begin
      Participant.transaction do
        if params[:is_employer] == 'yes'
          employer = Employer.create!(employer_params_from_participant(@participant))
          @participant.employer = employer
        end
  
        if @participant.save
          redirect_to @participant, notice: 'Participant was successfully created.'
        else
          raise ActiveRecord::Rollback, "Participant could not be saved"
        end
      end
    rescue ActiveRecord::RecordInvalid => e
      # Log the error and set a flash message for the user
      Rails.logger.error("Participant creation failed: #{e.message}")
      flash.now[:alert] = "Error: #{e.message}"
      render :new
    end
  
  
    
  rescue => e
    puts "Error: #{e.message}"  # Log the error message
    flash.now[:alert] = "Error: #{e.message}" # Optionally, display the error message to the user
    render :new
  
  end
  
  def edit
  end

  def update
    if @participant.update(participant_params)
      redirect_to @participant, notice: 'Participant was successfully updated.'
    else
      render :edit
    end
  end

  def destroy
    @participant.destroy
    redirect_to participants_url, notice: 'Participant was successfully destroyed.'
  end

  private

  def set_participant
    @participant = Participant.find(params[:id])
  end

  def participant_params
    params.require(:participant).permit(:name, :address, :phone, :email, :mci, :dob, :ssn, :gender, :employer_id)
  end

  def employer_params_from_participant(participant)
    {
      name: participant.name,
      address: participant.address,
      phone: participant.phone,
      email: participant.email,
      dob: participant.dob,       # Mapping Date of Birth
      ssn: participant.ssn,       # Mapping SSN
      gender: participant.gender  # Mapping Gender
    }
  end
end