Add possibility to add an attachment to an invoice #345

.travis.yml

@@ -1,12 +1,13 @@
 language: ruby
 sudo: false
-rvm: 
+rvm:
   - 2.1
 services:
   - redis-server
 addons:
   apt:
     packages:
+      - libmagic-dev
       - metacity
 env: COVERALLS=1
 before_install:

Gemfile

@@ -46,6 +46,7 @@ gem 'roo', '~> 2.0.0'
 gem 'roo-xls'
 gem 'spreadsheet'
 gem 'gaffe'
+gem 'ruby-filemagic'
 
 # we use the git version of acts_as_versioned, and need to include it in this Gemfile
 gem 'acts_as_versioned', github: 'technoweenie/acts_as_versioned'

Gemfile.lock

@@ -359,6 +359,7 @@ GEM
     rspec-rerun (1.1.0)
       rspec (~> 3.0)
     rspec-support (3.4.1)
+    ruby-filemagic (0.7.1)
     ruby-ole (1.2.12)
     ruby-prof (0.15.9)
     ruby-units (2.0.0)
@@ -519,6 +520,7 @@ DEPENDENCIES
   rspec-core (~> 3.2)
   rspec-rails
   rspec-rerun
+  ruby-filemagic
   ruby-prof
   ruby-units
   sass-rails

app/controllers/finance/invoices_controller.rb

@@ -62,6 +62,13 @@ class Finance::InvoicesController < ApplicationController
     redirect_to finance_invoices_url
   end
 
+  def attachment
+    @invoice = Invoice.find(params[:invoice_id])
+    type = MIME::Types[@invoice.attachment_mime].first
+    filename = "invoice_#{@invoice.id}_attachment.#{type.preferred_extension}"
+    send_data(@invoice.attachment_data, :filename => filename, :type => type)
+  end
+
   private
 
   def find_invoice

app/models/invoice.rb

@@ -1,3 +1,5 @@
+require 'filemagic'
+
 class Invoice < ActiveRecord::Base
 
   belongs_to :supplier
@@ -7,12 +9,27 @@ class Invoice < ActiveRecord::Base
 
   validates_presence_of :supplier_id
   validates_numericality_of :amount, :deposit, :deposit_credit
+  validate :valid_attachment
 
   scope :unpaid, -> { where(paid_on: nil) }
 
+  attr_accessor :delete_attachment
+
   # Replace numeric seperator with database format
   localize_input_of :amount, :deposit, :deposit_credit
 
+  def attachment=(incoming_file)
+    self.attachment_data = incoming_file.read
+    self.attachment_mime = FileMagic.new(FileMagic::MAGIC_MIME).buffer(self.attachment_data)
+  end
+
+  def delete_attachment=(value)
+    if value == '1'
+      self.attachment_data = nil
+      self.attachment_mime = nil
+    end
+  end
+
   def user_can_edit?(user)
     user.role_finance? || (user.role_invoices? && !self.paid_on && self.created_by.id == user.id)
   end
@@ -21,4 +38,15 @@ class Invoice < ActiveRecord::Base
   def net_amount
     amount - deposit + deposit_credit
   end
+
+  protected
+
+  def valid_attachment
+    if attachment_data
+      mime = MIME::Type.simplified(attachment_mime)
+      unless ['application/pdf', 'image/jpeg'].include? mime
+        errors.add :attachment, I18n.t('model.invoice.invalid_mime', :mime => mime)
+      end
+    end
+  end
 end

app/views/finance/invoices/_form.html.haml

@@ -22,6 +22,8 @@
   = f.input :amount, as: :string
   = f.input :deposit, as: :string
   = f.input :deposit_credit, as: :string
+  = f.input :attachment, as: :file, hint: t('.attachment_hint')
+  = f.input :delete_attachment, as: :boolean
   = f.input :note
   .form-actions
     = f.submit class: 'btn'

app/views/finance/invoices/show.html.haml

@@ -58,6 +58,10 @@
   %p
     %b= heading_helper(Invoice, :total) + ':'
     = number_to_currency total
+%p
+  %b= heading_helper(Invoice, :attachment) + ':'
+  - if @invoice.attachment_data
+    = link_to t('ui.download'), finance_invoice_attachment_path(@invoice)
 %p
   %b= heading_helper(Invoice, :note) + ':'
   =h @invoice.note

config/locales/de.yml

@@ -54,9 +54,11 @@ de:
         total_price: Summe
       invoice:
         amount: Betrag
+        attachment: Anhang
         created_at: Erstellt am
         created_by: Erstellt von
         date: Rechnungsdatum
+        delete_attachment: Anhang löschen
         deliveries: Lieferung
         deposit: Pfand berechnet
         deposit_credit: Pfand gutgeschrieben
@@ -779,6 +781,8 @@ de:
     invoices:
       edit:
         title: Rechnung bearbeiten
+      form:
+        attachment_hint: Es sind nur JPEG und PDF erlaubt.
       index:
         action_new: Neue Rechnung anlegen
         title: Rechnungen
@@ -1175,6 +1179,8 @@ de:
       stock_ordergroup_name: Lager (%{user})
     membership:
       no_admin_delete: Mitgliedschaft kann nicht beendet werden. Du bist die letzte Administratorin
+    invoice:
+      invalid_mime: hat einen ungültigen MIME-Typ (%{mime})
     order_article:
       error_price: muss angegeben sein und einen aktuellen Preis haben
     page:
@@ -1704,6 +1710,7 @@ de:
     confirm_restore: Willst du %{name} wirklich wiederherstellen?
     copy: Kopieren
     delete: Löschen
+    download: Herunterladen
     edit: Bearbeiten
     marks:
       close: "×"

config/locales/en.yml

@@ -54,9 +54,11 @@ en:
         total_price: Sum
       invoice:
         amount: Amount
+        attachment: Attachment
         created_at: Created at
         created_by: Created by
         date: Billing date
+        delete_attachment: Delete attachment
         deliveries: Delivery
         deposit: Deposit charged
         deposit_credit: Deposit returned
@@ -793,6 +795,8 @@ en:
     invoices:
       edit:
         title: Edit invoice
+      form:
+        attachment_hint: Only JPEG and PDF are allowed.
       index:
         action_new: Create new invoice
         title: Invoices
@@ -1196,6 +1200,8 @@ en:
       stock_ordergroup_name: Stock (%{user})
     membership:
       no_admin_delete: Membership can not be withdrawn as you are the last administrator.
+    invoice:
+      invalid_mime: has an invalide MIME type (%{mime})
     order_article:
       error_price: must be specified and have a current price price
     page:
@@ -1727,6 +1733,7 @@ en:
     confirm_restore: Do you really want to restore %{name}?
     copy: Copy
     delete: Delete
+    download: Download
     edit: Edit
     marks:
       close: "×"

config/locales/fr.yml

@@ -54,9 +54,11 @@ fr:
         total_price: Total
       invoice:
         amount: Montant
+        attachment: Appendice
         created_at: Créé le
         created_by: "Établi par"
         date: Date de facturation
+        delete_attachment: Supprimer appendice
         deliveries: Réapprovisionnement
         deposit: Consigne facturée
         deposit_credit: Consigne remboursée
@@ -1705,6 +1707,7 @@ fr:
     confirm_delete: Veux-tu vraiment supprimer %{name}?
     copy: 
     delete: Supprimer
+    download: Télécharger
     edit: Modifier
     marks:
       close: "×"

config/locales/nl.yml

@@ -54,9 +54,11 @@ nl:
         total_price: Som
       invoice:
         amount: Bedrag
+        attachment: Bijlage
         created_at: Gemaakt op
         created_by: Gemaakt door
         date: Factuurdatum
+        delete_attachment: Verwijder bijlage
         deliveries: Levering
         deposit: Statiegeld in rekening gebracht
         deposit_credit: Statiegeld teruggekregen
@@ -1692,6 +1694,7 @@ nl:
     confirm_delete: Wil je %{name} daadwerkelijk wissen?
     copy: Kopiëren
     delete: Verwijder
+    download: Downloaden
     edit: Bewerk
     marks:
       close: "×"

config/routes.rb

@@ -157,6 +157,7 @@ Foodsoft::Application.routes.draw do
       end
 
       resources :invoices do
+        get :attachment
         get :form_on_supplier_id_change, on: :collection
       end
 

db/migrate/20160218151041_add_attachment_to_invoice.rb

@@ -0,0 +1,6 @@
+class AddAttachmentToInvoice < ActiveRecord::Migration
+  def change
+    add_column :invoices, :attachment_mime, :string
+    add_column :invoices, :attachment_data, :binary, :limit => 8.megabyte
+  end
+end

db/schema.rb

@@ -169,6 +169,8 @@ ActiveRecord::Schema.define(version: 20160226000000) do
     t.datetime "created_at"
     t.datetime "updated_at"
     t.integer  "created_by_user_id"
+    t.string   "attachment_mime"
+    t.binary   "attachment_data"
   end
 
   add_index "invoices", ["supplier_id"], name: "index_invoices_on_supplier_id", using: :btree