seafile.rb

class Seafile < ActiveRecord::Base
  belongs_to :user
	has_one :message
  has_and_belongs_to_many :allow_users, class_name: 'User'

  before_save :check_constraints

  def share(user)
    allow_users << user
  end

  def save_and_upload(uploaded_file)
    raise 'File size should be less 20 Mb' if uploaded_file.size > 20_000_000

    self.original_filename = uploaded_file.original_filename
    self.content_type = uploaded_file.content_type
    save!

    File.open(path, 'wb'){ |file| file.write(uploaded_file.read) }
  end

  def name_html
    CGI.escapeHTML(original_filename)
  end

  def url
    path = Pathname.new(original_filename)
    name = path.basename(path.extname).to_s

    "/files/#{ id }/#{ name.to_url }#{ path.extname }"
  end

  def path
    @path ||= Rails.env != 'test' ? Rails.root.join("public/uploads/f_#{id}") : Rails.root.join("public/uploads/test/" + "#{self.original_filename}")
  end

  private

  def check_constraints
    raise if user.blank?
    raise if content_type.blank?
    raise if original_filename.blank?
  end
end