public IActionResult RejectMaterial(int materialId)
{
var materialToReject = _materialsService.GetMaterial(materialId);
if (materialToReject == null)
{
return(RedirectToAction("ResourceNotFound", "Error", new { error = "materiał o podanym Id nie istnieje." }));
}
_filesManagement.DeleteWholeMaterialFolder(materialId);
_materialsService.RejectMaterial(materialToReject);
return(RedirectToAction("MaterialsToApprove"));
}