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Contents
require_dependency 'landable/asset_uploader'
require 'carrierwave/orm/activerecord'
require 'digest/md5'
module Landable
class Asset < ActiveRecord::Base
include Landable::TableName
include Landable::Librarian
mount_uploader :data, Landable::AssetUploader
alias :file :data
alias :file= :data=
# This bit of indirection allows us to generate predictable
# URLs in the test environment.
def self.url_generator
@url_generator ||= proc { |asset| asset.data.try(:url) }
end
belongs_to :author
has_and_belongs_to_many :pages, join_table: Page.assets_join_table_name
has_and_belongs_to_many :page_revisions, join_table: PageRevision.assets_join_table_name
has_and_belongs_to_many :themes, join_table: Theme.assets_join_table_name
before_validation :write_metadata, on: :create
validates_presence_of :data, :author
validates_presence_of :name, :mime_type, :md5sum, :file_size
validates_uniqueness_of :md5sum
validates_numericality_of :file_size, only_integer: true
validates_format_of :name, :with => /^[\w\._-]+$/, :on => :create, :multiline => true, :message => 'can only contain alphanumeric characters, periods, underscores, and dashes'
def public_url
self.class.url_generator.call(self)
end
def duplicate_of
return unless data.present?
self.class.where(md5sum: calculate_md5sum).first
end
def associated_pages
paths = []
Page.where("body like ?", "%#{self.name}%").each do |page|
paths.push(page.path)
end
paths
end
private
def calculate_md5sum
Digest::MD5.hexdigest(data.read) if data.present?
end
def write_metadata
return unless data.present?
self.md5sum = calculate_md5sum
self.mime_type = data.file.content_type.presence || 'application/octet-stream'
self.file_size = data.file.size
end
end
end
Version data entries
14 entries across 14 versions & 1 rubygems