Sha256: c8d51caf6a890f924cc192dceebbe9200780b7be23f20320554ed77843ea2a40
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Versions: 6
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Contents
# encoding: UTF-8
module Amalgam
module Models
module Attachable
extend ActiveSupport::Concern
included do
attr_accessible :attachments_attributes
has_many :attachments, :as => :attachable, :class_name => Amalgam.attachment_class_name, :extend => ::Amalgam::Models::Attachable::AttachmentExtension
accepts_nested_attributes_for :attachments,
:allow_destroy => true,
:reject_if => proc {|attachment| attachment[:id].blank? && attachment[:file].blank?}
end
module AttachmentExtension
class DelegateArray < ::Array
def method_missing(*args)
first.send(*args)
end
end
# 返回一个 <tt>#HashWithIndifferentAccess</tt>
# 包含所有的附件,key为附件的name或者索引, value 为集合, 可直接作为第一个元素调用
# 举例:
# page[:attachments]
# # => [{:name => 'file' , :file => <FILE1> },
# # {:name => 'file} , :file => <FILE2> },
# # {:name => 'file2', :file => <FILE3>}
# # {:file => <FILE4>}]
# page.attachments
# # => {0 => <FILE1> , 1 => <FILE2> , 2 => <FILE3> ,3 => <FILE4>
# 'file' => [<FILE1>,<FILE2>],
# 'file2' => [<FILE3>]
# }
# page.attachments['file'].name #=> page.attachments['file'].first.name
def [](key)
return @attachments_hash[key] if @attachments_hash
@attachments_hash = HashWithIndifferentAccess.new
each_with_index do |a,i|
@attachments_hash[i] = a
if a.name.present?
@attachments_hash[a.name] = (@attachments_hash[a.name] || DelegateArray.new) << a
end
end
@attachments_hash[key]
end
end
end
end
end
Version data entries
6 entries across 6 versions & 1 rubygems