require 'filemagic' class Invoice < ActiveRecord::Base belongs_to :supplier belongs_to :created_by, :class_name => 'User', :foreign_key => 'created_by_user_id' has_many :deliveries has_many :orders 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 # Amount without deposit 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