octobercms/october · error · ApplicationException

backend::lang.form.behavior_not_ready

Error message

backend::lang.form.behavior_not_ready

What it means

Error "backend::lang.form.behavior_not_ready" thrown in octobercms/october.

Source

Thrown at modules/backend/behaviors/FormController.php:533

    /**
     * formRender the prepared form markup. This method is usually called from a view file.
     *
     *     <?= $this->formRender() ?>
     *
     * The first argument supports an array of render options. The supported
     * options can be found via the `render` method of the Form widget class.
     *
     *     <?= $this->formRender(['preview' => true, 'section' => 'primary']) ?>
     *
     * @see Backend\Widgets\Form
     * @param array $options Render options
     * @return string Rendered HTML for the form.
     */
    public function formRender($options = [])
    {
        if (!$this->formWidget) {
            throw new ApplicationException(Lang::get('backend::lang.form.behavior_not_ready'));
        }

        // Sections provided by the behavior, then use the widget as fallback
        $section = strtolower($options['section'] ?? '');
        switch ($section) {
            case 'buttons':
                return $this->controller->formRenderDesignButtons();
        }

        return $this->formWidget->render($options);
    }

    /**
     * formRenderDesign renders a preset form design as either:
     * basic, custom, sidebar, document, popup
     */
    public function formRenderDesign($options = [])
    {

View on GitHub (pinned to b608633a7e)

When it happens

Trigger: Thrown at modules/backend/behaviors/FormController.php:533 when the library encounters an invalid state.

Common situations: See trigger scenarios.

AI-assisted analysis of octobercms/october@b608633a7e (2026-08-21). Data as JSON: /api/errors/6a08782170a891da. Report an issue: GitHub.