Spot\Mapper::update PHP Method

    public function update(EntityInterface $entity, array $options = [])
    {
        // Run beforeSave and beforeUpdate to know whether or not we can continue
        if (false === $this->eventEmitter()->emit('beforeSave', [$entity, $this]) || false === $this->eventEmitter()->emit('beforeUpdate', [$entity, $this])) {
            return false;
        }
        // Run validation unless disabled via options
        if (!isset($options['validate']) || isset($options['validate']) && $options['validate'] !== false) {
            if (!$this->validate($entity, $options)) {
                return false;
            }
        }
        if (isset($options['relations']) && $options['relations'] === true) {
            $this->saveBelongsToRelations($entity, $options);
        }
        // Prepare data
        $data = $entity->dataModified();
        // Save only known, defined fields
        $entityFields = $this->fields();
        $entityName = $this->entity();
        $extraData = array_diff_key($data, $entityFields);
        $data = array_intersect_key($data, $entityFields);
        // If there are extra fields here, throw an error
        if (!isset($options['strict']) || isset($options['strict']) && $options['strict'] === true) {
            if (count($extraData) > 0) {
                throw new Exception("Update error: Unknown fields provided for " . $entityName . ": '" . implode("', '", array_keys($extraData)) . "'");
            }
        }
        // Do type conversion
        $data = $this->convertToDatabaseValues($entityName, $data);
        if (count($data) > 0) {
            $result = $this->resolver()->update($this->table(), $data, [$this->primaryKeyField() => $this->primaryKey($entity)]);
            $entity->data($entity->data(null, true, false), false);
            if (isset($options['relations']) && $options['relations'] === true) {
                $this->saveHasRelations($entity, $options);
            }
            // Run afterSave and afterUpdate
            if (false === $this->eventEmitter()->emit('afterSave', [$entity, $this, &$result]) || false === $this->eventEmitter()->emit('afterUpdate', [$entity, $this, &$result])) {
                $result = false;
            }
        } else {
            $result = true;
            if (isset($options['relations']) && $options['relations'] === true) {
                $this->saveHasRelations($entity, $options);
            }
        }
        return $result;
    }