func persistDocument(d Document, ps *persistence.PersistenceSession) error {
owner, err := ps.Subject(d.Subject)
if err != nil {
return err
}
project, err := ps.Project(&owner, d.Project)
if err != nil {
return err
}
projectRef := mgo.DBRef{Collection: "project", Id: project.Id}
document := &persistence.Document{Project: projectRef, Path: d.Path}
err = ps.CreateDocument(document)
return err
}
