foodsoft/app/models/invoice.rb

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require 'filemagic'
class Invoice < ActiveRecord::Base
belongs_to :supplier
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belongs_to :created_by, :class_name => 'User', :foreign_key => 'created_by_user_id'
has_many :deliveries
has_many :orders
validates_presence_of :supplier_id
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validates_numericality_of :amount, :deposit, :deposit_credit
validate :valid_attachment
scope :unpaid, -> { where(paid_on: nil) }
attr_accessor :delete_attachment
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# 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