Generates a node preview.

Parameters

$node: The node to preview.

Return value

An HTML-formatted string of a node preview.

See also

node_form_build_preview()

1 call to node_preview()

node_form_build_preview in modules/node/node.pages.inc

Form submission handler for node_form().

1 string reference to 'node_preview'

node_update_7004 in modules/node/node.install

Extend the existing default preview and teaser settings to all node types.

File

modules/node/node.pages.inc, line 373

Code

function node_preview($node) {
    // Clone the node before previewing it to prevent the node itself from being
    // modified.
    $cloned_node = clone $node;
    if (node_access('create', $cloned_node) || node_access('update', $cloned_node)) {
        _field_invoke_multiple('load', 'node', array(
            $cloned_node->nid => $cloned_node,
        ));
        // Load the user's name when needed.
        if (isset($cloned_node->name)) {
            // The use of isset() is mandatory in the context of user IDs, because
            // user ID 0 denotes the anonymous user.
            if ($user = user_load_by_name($cloned_node->name)) {
                $cloned_node->uid = $user->uid;
                $cloned_node->picture = $user->picture;
            }
            else {
                $cloned_node->uid = 0;
                // anonymous user
            }
        }
        elseif ($cloned_node->uid) {
            $user = user_load($cloned_node->uid);
            $cloned_node->name = $user->name;
            $cloned_node->picture = $user->picture;
        }
        $cloned_node->changed = REQUEST_TIME;
        $nodes = array(
            $cloned_node->nid => $cloned_node,
        );
        // Display a preview of the node.
        if (!form_get_errors()) {
            $cloned_node->in_preview = TRUE;
            $output = theme('node_preview', array(
                'node' => $cloned_node,
            ));
            unset($cloned_node->in_preview);
        }
        drupal_set_title(t('Preview'), PASS_THROUGH);
        return $output;
    }
}

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