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paypal_controller.rb
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paypal_controller.rb
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module Spree
class PaypalController < StoreController
def express
order = current_order || raise(ActiveRecord::RecordNotFound)
items = order.line_items.map(&method(:line_item))
additional_adjustments = order.all_adjustments.additional
tax_adjustments = additional_adjustments.tax
shipping_adjustments = additional_adjustments.shipping
additional_adjustments.eligible.each do |adjustment|
# Because PayPal doesn't accept $0 items at all. See #10
# https://cms.paypal.com/uk/cgi-bin/?cmd=_render-content&content_ID=developer/e_howto_api_ECCustomizing
# "It can be a positive or negative value but not zero."
next if adjustment.amount.zero?
next if tax_adjustments.include?(adjustment) || shipping_adjustments.include?(adjustment)
items << {
Name: adjustment.label,
Quantity: 1,
Amount: {
currencyID: order.currency,
value: adjustment.amount
}
}
end
pp_request = provider.build_set_express_checkout(express_checkout_request_details(order, items))
begin
pp_response = provider.set_express_checkout(pp_request)
if pp_response.success?
redirect_to provider.express_checkout_url(pp_response, useraction: 'commit')
else
flash[:error] = Spree.t('flash.generic_error', scope: 'paypal', reasons: pp_response.errors.map(&:long_message).join(" "))
redirect_to checkout_state_path(:payment)
end
rescue SocketError
flash[:error] = Spree.t('flash.connection_failed', scope: 'paypal')
redirect_to checkout_state_path(:payment)
end
end
def confirm
order = current_order || raise(ActiveRecord::RecordNotFound)
order.payments.create!({
source: Spree::PaypalExpressCheckout.create({
token: params[:token],
payer_id: params[:PayerID]
}),
amount: order.total,
payment_method: payment_method
})
order.next
if order.complete?
flash.notice = Spree.t(:order_processed_successfully)
flash[:order_completed] = true
session[:order_id] = nil
redirect_to completion_route(order)
else
redirect_to checkout_state_path(order.state)
end
end
def cancel
flash[:notice] = Spree.t('flash.cancel', scope: 'paypal')
order = current_order || raise(ActiveRecord::RecordNotFound)
redirect_to checkout_state_path(order.state, paypal_cancel_token: params[:token])
end
private
def line_item(item)
{
Name: item.product.name,
Number: item.variant.sku,
Quantity: item.quantity,
Amount: {
currencyID: item.order.currency,
value: item.price
},
ItemCategory: "Physical"
}
end
def express_checkout_request_details order, items
{ SetExpressCheckoutRequestDetails: {
InvoiceID: order.number,
BuyerEmail: order.email,
ReturnURL: confirm_paypal_url(payment_method_id: params[:payment_method_id], utm_nooverride: 1),
CancelURL: cancel_paypal_url,
SolutionType: payment_method.preferred_solution.present? ? payment_method.preferred_solution : "Mark",
LandingPage: payment_method.preferred_landing_page.present? ? payment_method.preferred_landing_page : "Billing",
cppheaderimage: payment_method.preferred_logourl.present? ? payment_method.preferred_logourl : "",
NoShipping: 1,
PaymentDetails: [payment_details(items)]
}}
end
def payment_method
Spree::PaymentMethod.find(params[:payment_method_id])
end
def provider
payment_method.provider
end
def payment_details items
# This retrieves the cost of shipping after promotions are applied
# For example, if shippng costs $10, and is free with a promotion, shipment_sum is now $10
shipment_sum = current_order.shipments.map(&:discounted_cost).sum
# This calculates the item sum based upon what is in the order total, but not for shipping
# or tax. This is the easiest way to determine what the items should cost, as that
# functionality doesn't currently exist in Spree core
item_sum = current_order.total - shipment_sum - current_order.additional_tax_total
if item_sum.zero?
# Paypal does not support no items or a zero dollar ItemTotal
# This results in the order summary being simply "Current purchase"
{
OrderTotal: {
currencyID: current_order.currency,
value: current_order.total
}
}
else
{
OrderTotal: {
currencyID: current_order.currency,
value: current_order.total
},
ItemTotal: {
currencyID: current_order.currency,
value: item_sum
},
ShippingTotal: {
currencyID: current_order.currency,
value: shipment_sum,
},
TaxTotal: {
currencyID: current_order.currency,
value: current_order.additional_tax_total
},
ShipToAddress: address_options,
PaymentDetailsItem: items,
ShippingMethod: "Shipping Method Name Goes Here",
PaymentAction: "Sale"
}
end
end
def address_options
return {} unless address_required?
{
Name: current_order.bill_address.try(:full_name),
Street1: current_order.bill_address.address1,
Street2: current_order.bill_address.address2,
CityName: current_order.bill_address.city,
Phone: current_order.bill_address.phone,
StateOrProvince: current_order.bill_address.state_text,
Country: current_order.bill_address.country.iso,
PostalCode: current_order.bill_address.zipcode
}
end
def completion_route(order)
order_path(order)
end
def address_required?
payment_method.preferred_solution.eql?('Sole')
end
end
end