oqtane.framework/Oqtane.Client/Modules/Admin/Users/Roles.razor

@namespace Oqtane.Modules.Admin.Users
@inherits ModuleBase
@inject IRoleService RoleService
@inject IUserRoleService UserRoleService

@if (userroles == null)
{
    <p><em>Loading...</em></p>
}
else
{
    <table class="table table-borderless">
        <tr>
            <td>
                <label for="Name" class="control-label">Role: </label>
            </td>
            <td>
                <select class="form-control" @bind="@roleid">
                    <option value="-1">&lt;Select Role&gt;</option>
                    @foreach (Role role in roles)
                    {
                        <option value="@(role.RoleId)">@role.Name</option>
                    }
                </select>
            </td>
        </tr>
        <tr>
            <td>
                <label for="Name" class="control-label">Effective Date: </label>
            </td>
            <td>
                <input class="form-control" @bind="@effectivedate" />
            </td>
        </tr>
        <tr>
            <td>
                <label for="Name" class="control-label">Expiry Date: </label>
            </td>
            <td>
                <input class="form-control" @bind="@expirydate" />
            </td>
        </tr>
    </table>
    <button type="button" class="btn btn-success" @onclick="SaveUserRole">Save</button>
    <NavLink class="btn btn-secondary" href="@NavigateUrl()">Cancel</NavLink>

    <hr class="app-rule" />
    <p align="center">
        <Pager Items="@userroles">
            <Header>
                <th>Role</th>
                <th>&nbsp;</th>
            </Header>
            <Row>
                <td>@context.Role.Name</td>
                <td>
                    @if (!context.Role.IsSystem)
                    {
                        <button type="button" class="btn btn-danger" @onclick=@(async () => await DeleteUserRole(context.UserRoleId))>Delete</button>
                    }
                </td>
            </Row>
        </Pager>
    </p>
}

@code {
    public override SecurityAccessLevel SecurityAccessLevel { get { return SecurityAccessLevel.Admin; } }

    int userid;
    List<Role> roles;
    int roleid = -1;
    string effectivedate = "";
    string expirydate = "";
    List<UserRole> userroles;

    protected override async Task OnInitializedAsync()
    {
        try
        {
            userid = Int32.Parse(PageState.QueryString["id"]);
            roles = await RoleService.GetRolesAsync(PageState.Site.SiteId);
            await GetUserRoles();
        }
        catch (Exception ex)
        {
            AddModuleMessage(ex.Message, MessageType.Error);
        }
    }

    private async Task GetUserRoles()
    {
        userroles = await UserRoleService.GetUserRolesAsync(PageState.Site.SiteId);
        userroles = userroles.Where(item => item.UserId == userid).ToList();
    }

    private async Task SaveUserRole()
    {
        try
        {
            if (roleid != -1)
            {
                UserRole userrole = userroles.Where(item => item.UserId == userid && item.RoleId == roleid).FirstOrDefault();
                if (userrole != null)
                {
                    if (string.IsNullOrEmpty(effectivedate))
                    {
                        userrole.EffectiveDate = null;
                    }
                    else
                    {
                        userrole.EffectiveDate = DateTime.Parse(effectivedate);
                    }
                    if (string.IsNullOrEmpty(expirydate))
                    {
                        userrole.ExpiryDate = null;
                    }
                    else
                    {
                        userrole.ExpiryDate = DateTime.Parse(expirydate);
                    }
                    await UserRoleService.UpdateUserRoleAsync(userrole);
                }
                else
                {
                    userrole = new UserRole();
                    userrole.UserId = userid;
                    userrole.RoleId = roleid;
                    if (string.IsNullOrEmpty(effectivedate))
                    {
                        userrole.EffectiveDate = null;
                    }
                    else
                    {
                        userrole.EffectiveDate = DateTime.Parse(effectivedate);
                    }
                    if (string.IsNullOrEmpty(expirydate))
                    {
                        userrole.ExpiryDate = null;
                    }
                    else
                    {
                        userrole.ExpiryDate = DateTime.Parse(expirydate);
                    }
                    await UserRoleService.AddUserRoleAsync(userrole);
                }
                await GetUserRoles();
                AddModuleMessage("User Assigned To Role", MessageType.Success);
            }
            else
            {
                AddModuleMessage("You Must Select A Role", MessageType.Warning);
            }
        }
        catch (Exception ex)
        {
            AddModuleMessage(ex.Message, MessageType.Error);
        }
    }

    private async Task DeleteUserRole(int UserRoleId)
    {
        await UserRoleService.DeleteUserRoleAsync(UserRoleId);
        await GetUserRoles();
        AddModuleMessage("User Removed From Role", MessageType.Success);
    }

}