pagehandler.php

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<?php
function elgg_register_route($name, array $params = []) {
    return _elgg_services()->routes->register($name, $params);
}

function elgg_unregister_route($name) {
    _elgg_services()->routes->unregister($name);
}

function elgg_generate_url($name, array $parameters = []) {
    return _elgg_services()->routes->generateUrl($name, $parameters);
}

function elgg_generate_entity_url(ElggEntity $entity, $resource = 'view', $subresource = null, array $parameters = []) {

    $make_route_name = function ($type, $subtype) use ($resource, $subresource) {
        $route_parts = [
            $resource,
            $type,
            $subtype,
            $subresource,
        ];

        return implode(':', array_filter($route_parts));
    };

    $pairs = [
        [$entity->type, $entity->subtype],
        [$entity->type, null],
    ];

    foreach ($pairs as $pair) {
        $route_name = $make_route_name($pair[0], $pair[1]);
        $params = _elgg_services()->routes->resolveRouteParameters($route_name, $entity, $parameters);
        if ($params !== false) {
            return elgg_generate_url($route_name, $params);
        }
    }

    return false;
}

function elgg_generate_action_url($action, array $query = [], $add_csrf_tokens = true) {

    $url = "action/$action";
    $url = elgg_http_add_url_query_elements($url, $query);
    $url = elgg_normalize_url($url);

    if ($add_csrf_tokens) {
        $url = elgg_add_action_tokens_to_url($url);
    }

    return $url;
}

function elgg_gatekeeper() {
    _elgg_services()->gatekeeper->assertAuthenticatedUser();
}

function elgg_admin_gatekeeper() {
    _elgg_services()->gatekeeper->assertAuthenticatedAdmin();
}

function elgg_entity_gatekeeper($guid, $type = null, $subtype = null) {
    $entity = _elgg_services()->gatekeeper->assertExists($guid, $type, $subtype);
    _elgg_services()->gatekeeper->assertAccessibleEntity($entity);
}

function elgg_ajax_gatekeeper() {
    _elgg_services()->gatekeeper->assertXmlHttpRequest();
}

function elgg_ok_response($content = '', $message = '', $forward_url = null, $status_code = ELGG_HTTP_OK) {
    if ($message) {
        system_message($message);
    }

    return new \Elgg\Http\OkResponse($content, $status_code, $forward_url);

}

function elgg_error_response($error = '', $forward_url = REFERRER, $status_code = ELGG_HTTP_OK) {
    if ($error) {
        register_error($error);
    }

    return new \Elgg\Http\ErrorResponse($error, $status_code, $forward_url);
}

function elgg_redirect_response($forward_url = REFERRER, $status_code = ELGG_HTTP_FOUND) {
    return new Elgg\Http\RedirectResponse($forward_url, $status_code);
}