I have a issue related to deactivate user

I have a field deactivate reason in user object

Deactivate User should be redirect on login in portal according to deactivate reason(new field on user) field

1.If deactivate reason is 'FCRA Renew' than user should be redirect on new screen.

2.if deactivate reason is Standard than standard Deactivated message “You access is disabled. Contact your site administrator”
should be display.

But when I am query on deactivate user than it is not return the deactivate reason value.

I have login button on customer portal and its return the site.login method.

Can we query on deactivate user on login time.


class code:

global class SiteLoginController {
    global String username {get; set;}
    global String password {get; set;}

    global PageReference login() {  
        List<User> lstUser = [Select IsActive, Deactivation_Reason__c from User Where Username=:username  limit 1];
        if(lstUser.size() > 0 ){
           User oUser = lstUser.get(0);
           if(oUser.IsActive == false && oUser.Deactivation_Reason__c.tolowercase().contains('fcra') ){   
             return Site.login(username, password, '/main/deactivateuser');
           }
           else{
             return Site.login(username, password, '/home/home.jsp');
           }
        }
        return Site.login(username, password, '/home/home.jsp');
    }
    
    global SiteLoginController () {}   
}


Thanks