Module: Versioned::Document

Extended by:
ActiveSupport::Concern
Defined in:
lib/versioned/versioned.rb

Instance Method Summary collapse

Instance Method Details

#destroy_versions ⇒ Object 



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# File 'lib/versioned/versioned.rb', line 73

def destroy_versions
  self.versions.destroy_all
end

#generate_version_id ⇒ Object 



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# File 'lib/versioned/versioned.rb', line 48

def generate_version_id
  version_id = BSON::ObjectId.new
  # don't use #save; that'll generate a new version
  self.write_attribute(:version_id, version_id)
  self.collection.update({'_id' => self.id}, { 'version_id' => version_id })
  self.changed_attributes.clear
end

#keep_versions_created_before ⇒ Object 



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# File 'lib/versioned/versioned.rb', line 67

def keep_versions_created_before
  if self.respond_to?(:keep_versions_for)
    Time.now - self.keep_versions_for
  end
end

#prune_versions ⇒ Object 



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# File 'lib/versioned/versioned.rb', line 56

def prune_versions
  if self.keep_versions_created_before
    self.versions.destroy_all(:created_at.lt => self.keep_versions_created_before)
  elsif self.class.max_versions
    limit = self.versions.count - self.class.max_versions
    if limit > 0
      self.versions.destroy_all(sort: 'id2 asc', limit: limit)
    end
  end
end

#push_version ⇒ Object 



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# File 'lib/versioned/versioned.rb', line 39

def push_version
  unless self.changes.empty?
    version = self.versions.create(_id: self.version_id, doc: version_doc, updater: self.updater)
    self.generate_version_id
  end
ensure
  self.updater = nil
end

#rollback ⇒ Object 



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# File 'lib/versioned/versioned.rb', line 88

def rollback
  self.rolling_back = true
  yield
ensure
  self.rolling_back = false
end

#rolling_back? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/versioned/versioned.rb', line 30

def rolling_back?
  !!@rolling_back
end

#save(options = {}) ⇒ Object 



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# File 'lib/versioned/versioned.rb', line 34

def save(options={})
  self.updater = options.delete(:updater)
  super
end

#version_doc ⇒ Object 



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# File 'lib/versioned/versioned.rb', line 77

def version_doc
  {}.tap do |doc|
    doc.merge!(self.attributes)
    self.changes.each_pair do |attr, vals|
      doc[attr] = vals.first
    end
    doc.delete('_id')
    doc.delete('version_id')
  end
end