Can't mass-assign protected attributes: stripe_card_token - ruby-on-rails

Question

I'm trying to create a charge with stripe. I get the following error when attempting to create order object, but I have set attr_accessor :stripe_card_token. Does anyone know what I am doing wrong?
ActiveModel::MassAssignmentSecurity::Error in OrdersController#create
Can't mass-assign protected attributes: stripe_card_token
OrdersController - Create action
def create
#order = current_cart.build_order(params[:order])
#order.ip_address = request.remote_ip
#order.user_id = current_user.id
respond_to do |format|
if #order.save_with_payment
#order.add_line_items_from_cart(current_cart)
Cart.destroy(session[:cart_id])
session[:cart_id] = nil
format.html { render :action => "success", :notice => 'Thank you for your order.' }
format.xml { render :xml => #order, :status => :created, :location => #order }
else
format.html { render :action => "new" }
format.xml { render :xml => #order.errors,
:status => :unprocessable_entity }
end
end
end
OrderModel
class Order < ActiveRecord::Base
# PAYMENT_TYPES = [ "visa", "master card", "Amex", "Discover" ] Controll the payment options via Model
attr_accessible :first_name, :last_name, :ip_address, :cart_id, :house_id
attr_accessor :stripe_card_token
belongs_to :user
belongs_to :house
belongs_to :cart
has_many :transactions, :class_name => "OrderTransaction"
has_many :line_items, :dependent => :destroy
validates :house_id, presence: true
validates :cart_id, presence: true
def price_in_cents
(cart.total_price*100).round
end
def add_line_items_from_cart(cart)
cart.line_items.each do |item|
item.cart_id = nil
line_items << item
end
end
def save_with_payment
if valid?
Stripe::Charge.create(amount: price_in_cents, currency: "cad", description: current_user.name, card: stripe_card_token)
# self.stripe_order_token = order.id
save!
end
rescue Stripe::InvalidRequestError => e
logger.error "Stripe error while creating customer: #{e.message}"
errors.add :base, "There was a problem with your credit card."
false
end
OrderView _Form
<%= f.error_notification %>
<%= f.error_messages %>
<%= f.hidden_field :stripe_card_token %>
<%= f.hidden_field :cart_id%>
<div class="form-inputs">
<p><%#if user does not have a house Make a page (please order a home valuation first) %></p>
<div class="contain">
<h3>Select House</h3>
<%= f.input :house_id, :as => :radio_buttons, :collection => current_user.houses.all.map{|h| [h.address, h.id]}%>
</div>
<%= f.input :first_name %>
<%= f.input :last_name %>
<div class="field">
<%= label_tag :card_number, "Credit Card Number" %>
<%= text_field_tag :card_number, nil, name: nil %>
</div>
<div class="field">
<%= label_tag :card_code, "Security Code on Card (CVV)" %>
<%= text_field_tag :card_code, nil, name: nil %>
</div>
<div class="field">
<%= label_tag :card_month, "Card Expiration" %>
<%= select_month nil, {add_month_numbers: true}, {name: nil, id: "card_month"} %>
<%= select_year nil, {start_year: Date.today.year, end_year: Date.today.year+15}, {name: nil, id: "card_year"} %>
</div>
</div>
<div id="stripe_error">
<noscript>JavaScript is not enabled and is required for this form. First enable it in your web browser settings.</noscript>
</div>
<div class="form-actions">
<%= f.button :submit %>
</div>
Orders.js.coffee
jQuery ->
Stripe.setPublishableKey($('meta[name="stripe-key"]').attr('content'))
order.setupForm()
order =
setupForm: ->
$('#new_order').submit ->
$('input[type=submit]').attr('disabled', true)
if $('#card_number').length
order.processCard()
false
else
true
processCard: ->
card =
number: $('#card_number').val()
cvc: $('#card_code').val()
expMonth: $('#card_month').val()
expYear: $('#card_year').val()
Stripe.createToken(card, order.handleStripeResponse)
handleStripeResponse: (status, response) ->
if status == 200
$('#order_stripe_card_token').val(response.id)
$('#new_order')[0].submit()
else
$('#stripe_error').text(response.error.message)
$('input[type=submit]').attr('disabled', false)

Answer 1

You still need to include :stripe_card_token under attr_accessible in your model

Answer 2

Active record (the layer in your rails stack that provides an interface between your ruby code and your database) protects your database from unwanted end-user assignment using the attr_accessible method. if present in your model it makes sure that a request can't write to your database unless the attribute is listed.
You've got attr_accessible here but don't have :stripe_card_token listed, so you can't save to that field.
attr_accessible :first_name, :last_name, :ip_address, :cart_id, :house_id add , :stripe_card_token
You may have though the attr_accessor :stripe_card_token line would somehow be related, but that just sets the getter and setter methods for the attribute.
The difference is better laid out here
In this question

Answer 3

You can read more about mass-assignment here: http://www.h-online.com/security/news/item/Rails-3-2-3-makes-mass-assignment-change-1498547.html