spree 4.7

app/models/spree/bookkeeping_document.rb

@@ -108,7 +108,8 @@ def storage_path
     #
     def render_pdf
       ApplicationController.render(
-        template: "#{template_name}.pdf.prawn",
+        template: template_name,
+        formats: [:pdf],
         assigns: { doc: self }
       )
     end

app/models/spree_print_invoice/admin/main_menu/print_invoice_builder.rb

@@ -0,0 +1,30 @@
+module SpreePrintInvoice
+  module Admin
+    module MainMenu
+      class PrintInvoiceBuilder
+        include ::Spree::Core::Engine.routes.url_helpers
+
+        def build
+          items = [
+            ::Spree::Admin::MainMenu::ItemBuilder.new('invoices', ::Spree::Core::Engine.routes.url_helpers.admin_bookkeeping_documents_path(q: { template_eq: 'invoice' })).
+              with_label_translation_key('admin.invoices').
+              with_manage_ability_check(::Spree::BookkeepingDocument).
+              with_match_path('/bookkeeping_documents?q%5Btemplate_eq%5D=invoice').
+              build,
+            ::Spree::Admin::MainMenu::ItemBuilder.new('packaging_slips', ::Spree::Core::Engine.routes.url_helpers.admin_bookkeeping_documents_path(q: { template_eq: 'packaging_slip' })).
+              with_label_translation_key('admin.packaging_slips').
+              with_manage_ability_check(::Spree::BookkeepingDocument).
+              with_match_path('/bookkeeping_documents?q%5Btemplate_eq%5D=packaging_slip').
+              build
+          ]
+
+          ::Spree::Admin::MainMenu::SectionBuilder.new('documents', 'file.svg').
+              with_manage_ability_check(::Spree::BookkeepingDocument).
+              with_label_translation_key('admin.documents').
+              with_items(items).
+              build
+        end
+      end
+    end
+  end
+end

app/models/spree_print_invoice/spree/order_decorator.rb

@@ -0,0 +1,51 @@
+module SpreePrintInvoice
+  module Spree
+    module OrderDecorator
+      def self.prepended(base)
+        base.has_many :bookkeeping_documents, as: :printable, dependent: :destroy
+        base.has_one :invoice, -> { where(template: 'invoice') },
+                     class_name: 'Spree::BookkeepingDocument',
+                     as: :printable
+        base.has_one :packaging_slip, -> { where(template: 'packaging_slip') },
+                     class_name: 'Spree::BookkeepingDocument',
+                     as: :printable
+
+        base.delegate :number, :date, to: :invoice, prefix: true
+
+        # Create a new invoice before transitioning to complete
+        #
+        base.state_machine.before_transition to: :complete, do: :invoice_for_order
+      end
+
+      # Backwards compatibility stuff. Please don't use these methods, rather use the
+      # ones on Spree::BookkeepingDocument
+      #
+      def pdf_file
+        ActiveSupport::Deprecation.warn('This API has changed: Please use order.invoice.pdf instead')
+        invoice.pdf
+      end
+
+      def pdf_filename
+        ActiveSupport::Deprecation.warn('This API has changed: Please use order.invoice.file_name instead')
+        invoice.file_name
+      end
+
+      def pdf_file_path
+        ActiveSupport::Deprecation.warn('This API has changed: Please use order.invoice.pdf_file_path instead')
+        invoice.pdf_file_path
+      end
+
+      def pdf_storage_path(template)
+        ActiveSupport::Deprecation.warn('This API has changed: Please use order.{packaging_slip, invoice}.pdf_file_path instead')
+        bookkeeping_documents.find_by!(template: template).file_path
+      end
+
+      def invoice_for_order
+        bookkeeping_documents.create(template: 'invoice')
+        bookkeeping_documents.create(template: 'packaging_slip')
+      end
+    end
+  end
+end
+
+::Spree::Order.prepend ::SpreePrintInvoice::Spree::OrderDecorator

app/views/spree/admin/print_invoice_settings/edit.html.erb

@@ -10,7 +10,7 @@
           <fieldset class="no-border-bottom">
             <legend><%= Spree.t(:pdf_legend, scope: :print_invoice) %></legend>
 
-            <div class="form-group">
+            <div class="form-group ml-4">
               <div class="checkbox">
                 <%= label_tag :use_footer do %>
                   <%= preference_field_tag(:use_footer, Spree::PrintInvoice::Config[:use_footer], type: :boolean) %>
@@ -61,7 +61,7 @@
               <%= number_field_tag(:logo_scale, Spree::PrintInvoice::Config[:logo_scale], in: 1...101, class: 'form-control') %>
             </div>
 
-            <div class="form-group">
+            <div class="form-group ml-4">
               <div class="checkbox">
                 <%= label_tag :store_pdf do %>
                   <%= preference_field_tag(:store_pdf, Spree::PrintInvoice::Config[:store_pdf], type: :boolean) %>

app/views/spree/printables/shared/_header.pdf.prawn

@@ -1,6 +1,6 @@
 im = (Rails.application.assets || ::Sprockets::Railtie.build_environment(Rails.application)).find_asset(Spree::PrintInvoice::Config[:logo_path])
 
-if im && File.exist?(im.pathname)
+if im && File.exist?(im.filename)
   pdf.image im.filename, vposition: :top, height: 40, scale: Spree::PrintInvoice::Config[:logo_scale]
 end
 

config/initializers/print_invoice.rb

@@ -0,0 +1,18 @@
+Rails.application.config.after_initialize do
+  if Spree::Core::Engine.backend_available?
+    Rails.application.config.spree_backend.main_menu.insert_after('dashboard', ::SpreePrintInvoice::Admin::MainMenu::PrintInvoiceBuilder.new.build)
+
+    Rails.application.config.spree_backend.tabs[:order].add(
+      ::Spree::Admin::Tabs::TabBuilder.new(::Spree.t(:documents, scope: [:print_invoice]), ->(resource) { ::Spree::Core::Engine.routes.url_helpers.admin_order_bookkeeping_documents_path(resource) }).
+        with_icon_key('file.svg').
+        with_active_check.
+        build
+    )
+
+     Rails.application.config.spree_backend.main_menu.add_to_section('settings',
+      ::Spree::Admin::MainMenu::ItemBuilder.new('print_invoice.settings', ::Spree::Core::Engine.routes.url_helpers.edit_admin_print_invoice_settings_path).
+        with_manage_ability_check(::Spree::BookkeepingDocument).
+        build
+      )
+  end
+end

lib/spree_print_invoice/engine.rb

@@ -1,3 +1,5 @@
+require_relative '../spree/print_invoice_setting'
+
 module SpreePrintInvoice
   class Engine < Rails::Engine
     require 'spree/core'