Class: Term

Inherits:
Sequel::Model
  • Object
show all
Defined in:
backend/app/model/term.rb

Class Method Summary collapse

Instance Method Summary collapse

Class Method Details

.broadcast_changes ⇒ Object 



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# File 'backend/app/model/term.rb', line 63

def self.broadcast_changes
  Notifications.notify("VOCABULARY_CHANGED")
end

.create_from_json(json, opts = {}) ⇒ Object 



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# File 'backend/app/model/term.rb', line 21

def self.create_from_json(json, opts = {})
  set_vocabulary(json, opts)
  obj = super

  broadcast_changes
  obj
end

.ensure_exists(json, referrer) ⇒ Object 



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# File 'backend/app/model/term.rb', line 40

def self.ensure_exists(json, referrer)
  DB.attempt {
    self.create_from_json(json)
  }.and_if_constraint_fails {|exception|
    term_type_id = BackendEnumSource.id_for_value("subject_term_type", json.term_type)

    term = Term.find(:vocab_id => JSONModel(:vocabulary).id_for(json.vocabulary),
                     :term => json.term,
                     :term_type_id => term_type_id)

    if !term
      # The term exists but we can't find it.  This could mean it was
      # created in a currently running transaction.  Abort this one to trigger
      # a retry.
      Log.info("Term '#{json.term}' seems to have been created by a currently running transaction.  Restarting this one.")
      sleep 5
      raise RetryTransaction.new
    end

    term
  }
end

.sequel_to_jsonmodel(objs, opts = {}) ⇒ Object 



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# File 'backend/app/model/term.rb', line 29

def self.sequel_to_jsonmodel(objs, opts = {})
  jsons = super

  jsons.zip(objs).each do |json, obj|
    json.vocabulary = uri_for(:vocabulary, obj.vocab_id)
  end

  jsons
end

.set_vocabulary(json, opts) ⇒ Object 



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# File 'backend/app/model/term.rb', line 13

def self.set_vocabulary(json, opts)
  opts["vocab_id"] = nil

  if json["vocabulary"]
    opts["vocab_id"] = parse_reference(json["vocabulary"], opts)[:id]
  end
end

Instance Method Details

#validate ⇒ Object 



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# File 'backend/app/model/term.rb', line 7

def validate
  super
  validates_unique([:vocab_id, :term, :term_type_id], :message => "Term must be unique")
  map_validation_to_json_property([:vocab_id, :term, :term_type_id], :term)
end