Display User Roles on Application Users Datagrid

Zach.E · May 18, 2022, 8:36pm

Hello,

I am using default security and would like to display an aggregated comma separated string of the user's roles in a column on the Application User page just as they are displayed in the Add and Edit Application User forms shown below:

I see the Application Users page has a default array of RoleNames which I have tried using in a column template with the string.join method but have been unable to get it to display as desired.

Is there another method I should be using?

Thank you,

Zach

enchev · May 19, 2022, 6:22am

Hi @Zach.E,

You are right, the RoleNames property of the user is not populated. We will release fix for this in our next update later today! Here is an example expression that will work properly in our next build: ${string.Join(",", Security.User?.RoleNames ?? Enumerable.Empty<string>())}

Zach.E · May 19, 2022, 6:22pm

Thank you @enchev, RoleNames is indeed populated and the code you provided does display all available role names, but I would like to display the role names related to a specific user in the Application Users table. I thought this may be achievable using string.join and data.RoleNames but I was unsuccessful.

Is there a way to do that?

Thanks,

Zach

enchev · May 20, 2022, 5:35am

Hi @Zach.E,

If you want to get specific user and the user roles you can use GetUserById() method of the security service:

github.com

radzenhq/radzen-examples/blob/master/CRMDemoBlazor/server/Services/SecurityService.cs#L213

      
        
                var item = context.Users
                  .Where(i => i.Id == id)
                  .FirstOrDefault();
            
            
    context.Users.Remove(item);
                context.SaveChanges();
            
            
    return item;
            }
            
            
public async Task<ApplicationUser> GetUserById(string id)
            {
                var user = await userManager.FindByIdAsync(id);
            
            
    if (user != null)
                {
                    context.Entry(user).Reload();
                    user.RoleNames = await userManager.GetRolesAsync(user);
                }
            
            
    return await Task.FromResult(user);

This is how EditApplicationUser page works, you can check the code in Page Load.

Jarda_Kadlecek · September 30, 2022, 12:51am

You have to leave the Property value EMPTY. This is for binding only.

Write the code, the @enchev mentioned, to the TEMPLATE property