/**
* Makes sure user may execute functions in this context.
* @param object $context
* @return void
*/
protected static function validate_context($context)
{
global $CFG;
if (empty($context)) {
throw new invalid_parameter_exception('Context does not exist');
}
if (empty(self::$contextrestriction)) {
self::$contextrestriction = get_context_instance(CONTEXT_SYSTEM);
}
$rcontext = self::$contextrestriction;
if ($rcontext->contextlevel == $context->contextlevel) {
if ($rcontext->id != $context->id) {
throw new restricted_context_exception();
}
} else {
if ($rcontext->contextlevel > $context->contextlevel) {
throw new restricted_context_exception();
} else {
$parents = get_parent_contexts($context);
if (!in_array($rcontext->id, $parents)) {
throw new restricted_context_exception();
}
}
}
if ($context->contextlevel >= CONTEXT_COURSE) {
list($context, $course, $cm) = get_context_info_array($context->id);
require_login($course, false, $cm, false, true);
}
}
/**
* Makes sure user may execute functions in this context.
*
* @param stdClass $context
* @since Moodle 2.0
*/
public static function validate_context($context)
{
global $CFG, $PAGE;
if (empty($context)) {
throw new invalid_parameter_exception('Context does not exist');
}
if (empty(self::$contextrestriction)) {
self::$contextrestriction = context_system::instance();
}
$rcontext = self::$contextrestriction;
if ($rcontext->contextlevel == $context->contextlevel) {
if ($rcontext->id != $context->id) {
throw new restricted_context_exception();
}
} else {
if ($rcontext->contextlevel > $context->contextlevel) {
throw new restricted_context_exception();
} else {
$parents = $context->get_parent_context_ids();
if (!in_array($rcontext->id, $parents)) {
throw new restricted_context_exception();
}
}
}
$PAGE->reset_theme_and_output();
list($unused, $course, $cm) = get_context_info_array($context->id);
require_login($course, false, $cm, false, true);
$PAGE->set_context($context);
}
/**
* Set context restriction for all following subsequent function calls.
* @param stdClass $contex
* @return void
*/
public static function set_context_restriction($context)
{
self::$contextrestriction = $context;
}
