getgrav/grav · error · RuntimeException

Failed: Cannot set page parent to a child of current page

Error message

Failed: Cannot set page parent to a child of current page

What it means

Error "Failed: Cannot set page parent to a child of current page" thrown in getgrav/grav.

Source

Thrown at system/src/Grav/Common/Page/Page.php:1417

     * You need to call $this->save() in order to perform the move.
     *
     * @param PageInterface $parent New parent page.
     * @return $this
     */
    public function move(PageInterface $parent)
    {
        if (!$this->_original) {
            $clone = clone $this;
            $this->_original = $clone;
        }

        $this->_action = 'move';

        if ($this->route() === $parent->route()) {
            throw new RuntimeException('Failed: Cannot set page parent to self');
        }
        if (Utils::startsWith($parent->rawRoute(), $this->rawRoute())) {
            throw new RuntimeException('Failed: Cannot set page parent to a child of current page');
        }

        $this->parent($parent);
        $this->id(time() . md5((string) $this->filePath()));

        if ($parent->path()) {
            $this->path($parent->path() . '/' . $this->folder());
        }

        if ($parent->route()) {
            $this->route($parent->route() . '/' . $this->slug());
        } else {
            $this->route(Grav::instance()['pages']->root()->route() . '/' . $this->slug());
        }

        $this->raw_route = null;

        return $this;

View on GitHub (pinned to 6040efed04)

When it happens

Trigger: Thrown at system/src/Grav/Common/Page/Page.php:1417 when the library encounters an invalid state.

Common situations: See trigger scenarios.

AI-assisted analysis of getgrav/grav@6040efed04 (2026-08-17). Data as JSON: /api/errors/e4960905560468e2. Report an issue: GitHub.