iot/projects/IoT.Shared/Areas/Admin/Controlls/Users/UserController.cs

using Application.Domain.Entities;
using Application.Models;
using Infrastructure.Application;
using Infrastructure.Data;
using Infrastructure.Extensions;
using Infrastructure.Web.Mvc;
using Microsoft.AspNetCore.Authorization;
using Microsoft.AspNetCore.Mvc;
using Microsoft.AspNetCore.Mvc.Rendering;
using Microsoft.EntityFrameworkCore;
using System;
using System.Linq;

namespace IoT.Shared.Areas.Admin.Controllers
{
    [ApiExplorerSettings(IgnoreApi = false)]
    [Authorize]
    [Area(nameof(Admin))]
    public class UserController : CrudController<User, PagedListModel<EditUserModel>, EditUserModel, EditUserModel>
    {
        private readonly RoleController _ajax;

        public UserController(IRepository<User> repo, RoleController ajax) : base(repo)
        {
            this._ajax = ajax;
        }

        public override IQueryable<User> Include(IQueryable<User> query)
        {
            return query.Include(o => o.UserRoles).ThenInclude(o => o.Role);
        }

        public override void ToDisplayModel(User entity, EditUserModel model)
        {
            model.Roles = entity.UserRoles.Select(o => new SelectListItem { Value = o.RoleId.ToString(), Text = o.Role.Name }).ToList();
            //entity.UserRoles.ForEach(o => ViewData.Add(o.RoleId, o.Role.Name));
        }

        public override void ToEditModel(User entity, EditUserModel model)
        {
            this.ViewData.MultiSelectList(o => model.Roles, () => this._ajax.GetRoleMultiSelectList(model.Roles.Select(o => Guid.Parse(o.Value))));
        }

        public override void ToEntity(EditUserModel model, User entity)
        {
            foreach (var roleId in entity.UserRoles.Select(o => o.RoleId).ToList())
            {
                if (!model.Roles.Any(o => o.Value == roleId.ToString()))
                {
                    entity.UserRoles.RemoveAll(o => o.RoleId == roleId);
                }
            }
            foreach (var role in model.Roles)
            {
                if (!entity.UserRoles.Any(o => o.RoleId.ToString() == role.Value))
                {
                    entity.UserRoles.Add(new UserRole { RoleId = Guid.Parse(role.Value) });
                }
            }
        }
    }
}