saving boolean values to postgres database using ruby on rails

I've been working on a old rails project for a bit now. Since I haven't worked with rails in some time I'm a bit rusty and need some help along the way.

The thing is that I'm adding a pick up options to a E commerce web.

The backend is driven by active admin

When the customer is checking out its product. He gets the option to pick it up in the store or have it sent.

And I want the order to show in the backend whether the product should be sent or if it is picked up at the store.

I'm kind of stuck here, and the delivery options don't seems to be saving to the database.... It would be so nice if someone could help me with this.

here is the html for the pick up option. it is located in the views/orders/_form.html.erb

<div class="col-md-5 pick-up-buttons" id="country_div">
  <li>
    <%= f.radio_button :pick_up, "1", checked: false, data: { question: "Pick up your items in the store" } %> 
    <%= f.label :pick_up, "Pick up your items in the store" %>
  </li>
  <li>
    <%= f.radio_button :pick_up, "0", checked: true,  data: { question: "Send the items by mail" } %> 
    <%= f.label :pick_up, "Send the items by mail" %>
  </li>
</div> 

and here is a part of the schema.rb file

create_table "orders", force: :cascade do |t|
  t.string   "name"
  t.string   "email"
  t.text     "address"
  t.string   "city"
  t.string   "country"
  t.datetime "created_at",                 null: false
  t.datetime "updated_at",                 null: false
  t.boolean  "shipped",    default: false
  t.boolean  "pick_up",    default: false
  t.string   "delivery"
end

And here is the orders_controller.rb

class OrdersController < ApplicationController
  include CurrentCart
  before_action :set_cart, only: [:new, :create]
  before_action :set_order, only: [:show, :edit, :destroy]

  def index
    @orders = Order.all? 
  end

  def new
    @images  = ["1.jpg", "2.jpg", "3.jpg", "4.jpg", "5.jpg"]
    @random_no = rand(5)
    @random_image = @images[@random_no]

    if @cart.product_items.empty?
      redirect_to root_url, notice: 'Your Cart is Empty'
      return
    end

    @order = Order.new
    @client_token = Braintree::ClientToken.generate

    @del_cost_euro = 20
  end

  def create
    @order = Order.new(order_params)
    if @order.save
      charge
      if @result.success?
        @order.add_product_items_from_cart(@cart)
        Cart.destroy(session[:cart_id])
        session[:cart_id] = nil
        OrderNotifier.received(@order).deliver 
        redirect_to root_url, notice: 'Thank You for Your Order'
      else
        flash[:error] = 'Please Check Your Cart'
        redirect_to root_url, alert: @result.message
        @order.destroy
      end
    else
      @client_token = Braintree::ClientToken.generate
      render :new
    end
  end

  def show
  end

  def destroy
    @order.destroy
    redirect_to root_url, notice: 'Order deleted'
  end

  private
  def set_order
    @order = Order.find(params[:id])
  end

  def order_params
    params.require(:order).permit(:name, :email, :address, :city, :country, :pick_up, :delivery)
  end

  def charge
    @result = Braintree::Transaction.sale(
      amount: @cart.total_price_usd,
      payment_method_nonce: params[:payment_method_nonce] )
  end
end

And here is the app/admin/order.rb

ActiveAdmin.register Order do

permit_params :shipped

after_update do |order|
  OrderNotifier.shipped(@order).deliver if order.shipped
end

show do |order|
  panel 'Customer Details' do
    attributes_table_for order, :name, :email, :address, :city, :country
  end

  panel 'Created' do
    "#{time_ago_in_words order.created_at} ago"
  end

  panel 'Shipped' do
    order.shipped
  end

  panel 'delivery' do
    order.pick_up
  end

  panel 'Order Details' do
    table_for(order.product_items) do 
      column 'Product' do |item|
        item.product.title
      end

      column 'Quantity' do |item|
        item.quantity
      end

      column 'Price Euro' do |item|
        number_to_currency item.total_price_eur
      end

      column 'Price USD' do |item|
        number_to_currency item.total_price_usd
      end
    end
  end

  panel 'Order Total USD' do 
    number_to_currency order.total_price_usd
  end

  panel 'Order Total Euro' do 
    number_to_currency order.total_price_eur
  end
end