module ActiveFedora::Persistence::ClassMethods

Public Instance Methods

create(attributes = nil, &block) click to toggle source

Creates an object (or multiple objects) and saves it to the repository, if validations pass. The resulting object is returned whether the object was saved successfully to the repository or not.

The attributes parameter can be either be a Hash or an Array of Hashes. These Hashes describe the attributes on the objects that are to be created.

Examples

# Create a single new object
User.create(:first_name => 'Jamie')

# Create an Array of new objects
User.create([{ :first_name => 'Jamie' }, { :first_name => 'Jeremy' }])

# Create a single object and pass it into a block to set other attributes.
User.create(:first_name => 'Jamie') do |u|
  u.is_admin = false
end

# Creating an Array of new objects using a block, where the block is executed for each object:
User.create([{ :first_name => 'Jamie' }, { :first_name => 'Jeremy' }]) do |u|
  u.is_admin = false
end
# File lib/active_fedora/persistence.rb, line 138
def create(attributes = nil, &block)
  if attributes.is_a?(Array)
    attributes.collect { |attr| create(attr, &block) }
  else
    object = new(attributes, &block)
    object.save
    object
  end
end
eradicate(uri) click to toggle source

Removes an object’s tombstone so another object with the same uri may be created. NOTE: this is in violation of the linked data platform and is only here as a convience method. It shouldn’t be used in the general course of repository operations.

# File lib/active_fedora/persistence.rb, line 151
def eradicate(uri)
  gone?(uri) ? delete_tombstone(uri) : false
end
gone?(uri) click to toggle source

Allows the user to find out if an id has been used in the system and then been deleted @param uri id in fedora that may or may not have been deleted

# File lib/active_fedora/persistence.rb, line 157
def gone?(uri)
  ActiveFedora::Base.find(uri)
  false
rescue Ldp::Gone
  true
rescue ActiveFedora::ObjectNotFoundError
  false
end

Private Instance Methods

delete_tombstone(uri) click to toggle source
# File lib/active_fedora/persistence.rb, line 168
def delete_tombstone(uri)
  tombstone = ActiveFedora::Base.id_to_uri(uri) + "/fcr:tombstone"
  ActiveFedora.fedora.connection.delete(tombstone)
  true
end