Question

My question is :

I have a domain table in database, where I add some rules for users.

Something like this:

Table UserRoles:

idRule cRuleDescription bRuleIsActive
1   Edit client      true
2   Delete client    false

My C# application refers to this table using enumeration, like this :

public enum UserRoles: int
{
    CanEditClient = 1,
    CanDeleteClient = 2,
    CanChangeClientName = 3,

    //More code
}

And I use a C# method that query the database, by its Id, to know if the logged user has permission for some action. Something like this:

bool HasPermissionToEdit = Rules.UserHasPermisson(UserName, UserRoles.CanEditClient)

if(HasPermissionToEdit)
{
  //Do the work!
}

But using this gives me some trouble. Someone created new rows in a production eviroment on database. And the ids are not correct anymore. And I’ll need to change the enumeration on my C# code. I need to use this table because, administration users can manage the rules for other group of users.

How do you work with it? There is a better way to reference a registry on a table?

Answer 1

Using the rule ID to map to an enum is not crazy in itself as long as the rule ID is not automatically generated (i.e. not an identiy column).