wbraganca\dynamicform\DynamicFormWidget::init PHP Method

    public function init()
    {
        parent::init();
        if (empty($this->widgetContainer) || preg_match('/^\\w{1,}$/', $this->widgetContainer) === 0) {
            throw new InvalidConfigException('Invalid configuration to property "widgetContainer". 
                Allowed only alphanumeric characters plus underline: [A-Za-z0-9_]');
        }
        if (empty($this->widgetBody)) {
            throw new InvalidConfigException("The 'widgetBody' property must be set.");
        }
        if (empty($this->widgetItem)) {
            throw new InvalidConfigException("The 'widgetItem' property must be set.");
        }
        if (empty($this->model) || !$this->model instanceof \yii\base\Model) {
            throw new InvalidConfigException("The 'model' property must be set and must extend from '\\yii\\base\\Model'.");
        }
        if (empty($this->formId)) {
            throw new InvalidConfigException("The 'formId' property must be set.");
        }
        if (empty($this->insertPosition) || !in_array($this->insertPosition, $this->_insertPositions)) {
            throw new InvalidConfigException("Invalid configuration to property 'insertPosition' (allowed values: 'bottom' or 'top')");
        }
        if (empty($this->formFields) || !is_array($this->formFields)) {
            throw new InvalidConfigException("The 'formFields' property must be set.");
        }
        $this->initOptions();
    }