Function create

lib/model.js:1765–1829

()

  function create() {
    if (options._automatic) {
      if (model.schema.options.autoIndex === false ||
          (model.schema.options.autoIndex == null && model.db.config.autoIndex === false)) {
        return done();
      }
    }

    const index = indexes.shift();
    if (!index) {
      return done();
    }
    if (options._automatic && index[1]._autoIndex === false) {
      return create();
    }

    if (baseSchemaIndexes.find(i => utils.deepEqual(i, index))) {
      return create();
    }

    const indexFields = clone(index[0]);
    const indexOptions = clone(index[1]);

    delete indexOptions._autoIndex;
    decorateDiscriminatorIndexOptions(model.schema, indexOptions);
    applyWriteConcern(model.schema, indexOptions);
    applySchemaCollation(indexFields, indexOptions, model.schema.options);

    indexSingleStart(indexFields, options);

    // Just in case `createIndex()` throws a sync error
    let promise = null;
    try {
      promise = model.collection.createIndex(indexFields, indexOptions);
    } catch (err) {
      if (!indexError) {
        indexError = err;
      }
      if (!model.$caught) {
        model.emit('error', err);
      }

      indexSingleDone(err, indexFields, indexOptions);
      create();
      return;
    }

    promise.then(
      name => {
        indexSingleDone(null, indexFields, indexOptions, name);
        create();
      },
      err => {
        if (!indexError) {
          indexError = err;
        }
        if (!model.$caught) {
          model.emit('error', err);