Module: MongoMapperExt::Storage::ClassMethods

Defined in:
lib/mongomapper_ext/storage.rb

Instance Method Summary collapse

Instance Method Details

#file_key(name, opts = {}) ⇒ Object 



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# File 'lib/mongomapper_ext/storage.rb', line 62

def file_key(name, opts = {})
  opts[:in] ||= :file_list

  define_method("#{name}=") do |file|
    if opts[:max_length] && file.respond_to?(:size) && file.size > opts[:max_length]
      errors.add(name, I18n.t("mongomapper_ext.storage.errors.max_length", :default => "file is too long. max length is #{opts[:max_length]} bytes"))
    end

    if cb = opts[:validate]
      if cb.kind_of?(Symbol)
        send(opts[:validate], file)
      elsif cb.kind_of?(Proc)
        cb.call(file)
      end
    end

    if self.errors.on(name).blank?
      send(opts[:in]).get(name.to_s).put(name.to_s, file)
    else
      # we store the errors here because we want to validate before storing the file
      mm_storage_errors.merge!(errors.errors)
    end
  end

  define_method(name) do
    send(opts[:in]).get(name.to_s)
  end

  define_method("has_#{name}?") do
    send(opts[:in]).has_key?(name.to_s)
  end
end

#file_list(name) ⇒ Object 



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# File 'lib/mongomapper_ext/storage.rb', line 44

def file_list(name)
  key name, MongoMapperExt::FileList
  define_method(name) do
    list = self[name]
    list.parent_document = self
    list
  end

  after_create do |doc|
    doc.send(name).sync_files
    doc.save(:validate => false)
  end

  before_destroy do |doc|
    doc.send(name).destroy_files
  end
end

#gridfs ⇒ Object 



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# File 'lib/mongomapper_ext/storage.rb', line 40

def gridfs
  @gridfs ||= Mongo::Grid.new(self.database)
end

#upgrade_file_keys(*keys) ⇒ Object

NOTE: this method will be removed on next release



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# File 'lib/mongomapper_ext/storage.rb', line 96

def upgrade_file_keys(*keys)
  cname = self.collection_name

  self.find_each do |object|
    keys.each do |key|
      object.upgrade_file_key(key, false)
    end

    object.save(:validate => false)
  end

  self.database.drop_collection(cname+".files")
  self.database.drop_collection(cname+".chunks")
end