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module Brightcontent
class Attachment < ActiveRecord::Base
belongs_to :attachable, polymorphic: true, :inverse_of => :attachments
has_attached_file :asset, :styles => lambda {|attachment| attachment.instance.attachment_styles }
before_post_process :resize_images
before_create :set_position
default_scope { order("position, id") }
scope :for_attachable, -> type, id { where(attachable_type: type.classify, attachable_id: id) }
delegate :url, to: :asset
validates_attachment_content_type :asset, content_type: Brightcontent.attachment_content_types
validates :attachable, presence: true
validates :asset, attachment_presence: true
attr_accessible *(column_names + [:asset]) if defined? ProtectedAttributes
def self.reposition!(positions)
positions.map! &:to_i
transaction do
all.each do |attachment|
attachment.update_column :position, positions.index(attachment.id)
end
end
end
def attachment_styles
default_attachment_styles.merge(user_defined_styles)
end
def image?
asset_content_type =~ %r{^(image|(x-)?application)/(bmp|gif|jpeg|jpg|pjpeg|png|x-png)$}
end
private
def user_defined_styles
if attachable && attachable.class.attachment_styles && image?
attachable.class.attachment_styles
end || {}
end
def default_attachment_styles
{ brightcontent: "100x100#", main: "200x200#" }
end
def resize_images
return false unless image?
end
def set_position
self.position ||= self.class.for_attachable(attachable_type, attachable_id).maximum(:position).to_i + 1
end
end
end
Version data entries
22 entries across 22 versions & 1 rubygems