code: function resolveString () {
      // resolve with original value unless value is id
      if (!this.value.match(idRegExp)) {
          return Promise.resolve(value)
      }
      // do query
      return this.model.query(this.getQueryArgs(this.value))
  }
docs: @function resolveString
  
  resolve string value to record
  
  @returns {Promise}