Same name in other branches

1. 8.9.x core/lib/Drupal/Core/Menu/MenuTreeStorage.php \Drupal\Core\Menu\MenuTreeStorage::loadLinks()
2. 10 core/lib/Drupal/Core/Menu/MenuTreeStorage.php \Drupal\Core\Menu\MenuTreeStorage::loadLinks()
3. 11.x core/lib/Drupal/Core/Menu/MenuTreeStorage.php \Drupal\Core\Menu\MenuTreeStorage::loadLinks()

Loads links in the given menu, according to the given tree parameters.

Parameters

string $menu_name: A menu name.

\Drupal\Core\Menu\MenuTreeParameters $parameters: The parameters to determine which menu links to be loaded into a tree. This method will set the absolute minimum depth, which is used in MenuTreeStorage::doBuildTreeData().

Return value

array A flat array of menu links that are part of the menu. Each array element is an associative array of information about the menu link, containing the fields from the {menu_tree} table. This array must be ordered depth-first.

2 calls to MenuTreeStorage::loadLinks()

MenuTreeStorage::loadAllChildren in core/lib/Drupal/Core/Menu/MenuTreeStorage.php

Loads all the enabled menu links that are below the given ID.

MenuTreeStorage::loadTreeData in core/lib/Drupal/Core/Menu/MenuTreeStorage.php

Loads a menu link tree from the storage.

File

core/lib/Drupal/Core/Menu/MenuTreeStorage.php, line 889

Class

MenuTreeStorage

Provides a menu tree storage using the database.

Namespace

Drupal\Core\Menu

Code

protected function loadLinks($menu_name, MenuTreeParameters $parameters) {
    $query = $this->connection
        ->select($this->table, NULL, $this->options);
    $query->fields($this->table);
    // Allow a custom root to be specified for loading a menu link tree. If
    // omitted, the default root (i.e. the actual root, '') is used.
    if ($parameters->root !== '') {
        $root = $this->loadFull($parameters->root);
        // If the custom root does not exist, we cannot load the links below it.
        if (!$root) {
            return [];
        }
        // When specifying a custom root, we only want to find links whose
        // parent IDs match that of the root; that's how we ignore the rest of the
        // tree. In other words: we exclude everything unreachable from the
        // custom root.
        for ($i = 1; $i <= $root['depth']; $i++) {
            $query->condition("p{$i}", $root["p{$i}"]);
        }
        // When specifying a custom root, the menu is determined by that root.
        $menu_name = $root['menu_name'];
        // If the custom root exists, then we must rewrite some of our
        // parameters; parameters are relative to the root (default or custom),
        // but the queries require absolute numbers, so adjust correspondingly.
        if (isset($parameters->minDepth)) {
            $parameters->minDepth += $root['depth'];
        }
        else {
            $parameters->minDepth = $root['depth'];
        }
        if (isset($parameters->maxDepth)) {
            $parameters->maxDepth += $root['depth'];
        }
    }
    // If no minimum depth is specified, then set the actual minimum depth,
    // depending on the root.
    if (!isset($parameters->minDepth)) {
        if ($parameters->root !== '' && $root) {
            $parameters->minDepth = $root['depth'];
        }
        else {
            $parameters->minDepth = 1;
        }
    }
    for ($i = 1; $i <= $this->maxDepth(); $i++) {
        $query->orderBy('p' . $i, 'ASC');
    }
    $query->condition('menu_name', $menu_name);
    if (!empty($parameters->expandedParents)) {
        $query->condition('parent', $parameters->expandedParents, 'IN');
    }
    if (isset($parameters->minDepth) && $parameters->minDepth > 1) {
        $query->condition('depth', $parameters->minDepth, '>=');
    }
    if (isset($parameters->maxDepth)) {
        $query->condition('depth', $parameters->maxDepth, '<=');
    }
    // Add custom query conditions, if any were passed.
    if (!empty($parameters->conditions)) {
        // Only allow conditions that are testing definition fields.
        $parameters->conditions = array_intersect_key($parameters->conditions, array_flip($this->definitionFields()));
        $serialized_fields = $this->serializedFields();
        foreach ($parameters->conditions as $column => $value) {
            if (is_array($value)) {
                $operator = $value[1];
                $value = $value[0];
            }
            else {
                $operator = '=';
            }
            if (in_array($column, $serialized_fields)) {
                $value = serialize($value);
            }
            $query->condition($column, $value, $operator);
        }
    }
    $links = $this->safeExecuteSelect($query)
        ->fetchAllAssoc('id', \PDO::FETCH_ASSOC);
    return $links;
}

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