尝试使用ViewModel填充用户和角色,但它显示的是类型而不是System.Data.Entity.DynamicProxies.AppUser.xxx(对于用户)和System.Data.Entity.DynamicProxies.IdentityRole.xxx(对于角色)。
代码如下。
public class AppUser : IdentityUser
{
//add custom properties which have not included in IdentityUser before
public string Designation { get; set; }
public async Task<ClaimsIdentity> GenerateUserIdentityAsync(UserManager<AppUser> manager)
{
// Note the authenticationType must match the one defined in CookieAuthenticationOptions.AuthenticationType
var userIdentity = await manager.CreateIdentityAsync(this, DefaultAuthenticationTypes.ApplicationCookie);
// Add custom user claims here
return userIdentity;
}
public static ERPContext Create()
{
return new ERPContext();
}
}
public class AppRole : IdentityRole
{
public AppRole() : base() { }
public AppRole(string name) : base(name) { }
// extra properties here
public string Description { get; set; }
}
视图模型
public class UserAssignRoleViewModel
{
public string Username { get; set; }
public string Role { get; set; }
[Required]
public List<AppUser> Users { get; set; }
[Required]
public List<IdentityRole> Roles { get; set; }
public int SelectedId { set; get; }
public int SelectedRoleId { set; get; }
}
RoleController
public ActionResult ManageUserRoles()
{
//this code is also an alternate way to fetch the roles from Owin // Startup config
// var roles = HttpContext.GetOwinContext().GetUserManager<RoleManager<IdentityRole>>().Roles;
//var rolelist = context.Roles.OrderBy(r => r.Name).ToList().Select(rr => new SelectListItem { Value = rr.Name.ToString(), Text = rr.Name }).ToList();
var model = new UserAssignRoleViewModel();
var users = context.Users.ToList();
users.Select(s => new SelectListItem
{
Value = s.Id.ToString(),
Text = s.UserName.ToString()
});
var roles = context.Roles.ToList();
roles.Select(s => new SelectListItem
{
Value = s.Id.ToString(),
Text = s.Name.ToString()
});
ViewBag.Users = users;
//var list = context.Roles.OrderBy(r => r.Name).ToList().Select(rr => new SelectListItem { Value = rr.Name.ToString(), Text = rr.Name }).ToList();
//ViewBag.Roles = list;
model.Users = users;
model.Roles = roles;
return View(model);
}
[HttpPost]
[ValidateAntiForgeryToken]
public ActionResult RoleAddToUser(string UserName, string RoleName)
{
AppUser user = context.Users.Where(u => u.UserName.Equals(UserName, StringComparison.CurrentCultureIgnoreCase)).FirstOrDefault();
var userManager = new UserManager<AppUser>(new UserStore<AppUser>(context));
userManager.AddToRole(user.Id, RoleName);
ViewBag.ResultMessage = "Role Assigned successfully !";
// prepopulat users for the view dropdown
var _users = context.Users.OrderBy(r => r.UserName).ToList().Select(rr => new SelectListItem { Value = rr.UserName.ToString(), Text = rr.UserName }).ToList();
ViewBag.Users = _users;
// prepopulat roles for the view dropdown
var _roles = context.Roles.OrderBy(r => r.Name).ToList().Select(rr => new SelectListItem { Value = rr.Name.ToString(), Text = rr.Name }).ToList();
ViewBag.Roles = _roles;
return View("ManageUserRoles");
}
[HttpPost]
[ValidateAntiForgeryToken]
public ActionResult GetRoles(string UserName)
{
if (!string.IsNullOrWhiteSpace(UserName))
{
AppUser user = context.Users.Where(u => u.UserName.Equals(UserName, StringComparison.CurrentCultureIgnoreCase)).FirstOrDefault();
var userManager = new UserManager<AppUser>(new UserStore<AppUser>(context));
ViewBag.RolesForThisUser = userManager.GetRoles(user.Id);
// prepopulat roles for the view dropdown
var list = context.Roles.OrderBy(r => r.Name).ToList().Select(rr => new SelectListItem { Value = rr.Name.ToString(), Text = rr.Name }).ToList();
ViewBag.Roles = list;
// prepopulat roles for the view dropdown
var users = context.Users.OrderBy(r => r.UserName).ToList().Select(rr => new SelectListItem { Value = rr.UserName.ToString(), Text = rr.UserName }).ToList();
ViewBag.Users = users;
}
return View("ManageUserRoles");
}
上面的代码几乎没有我之前尝试过的评论代码。
最后,视图如下
@model ERPLite.Models.UserAssignRoleViewModel
@{
ViewBag.Title = "ManageUserRoles";
}
@Html.ActionLink("Create New Role", "Create") | @Html.ActionLink("Manage User Role", "ManageUserRoles")
<hr />
@using (Html.BeginForm("RoleAddToUser", "Role"))
{
@Html.AntiForgeryToken()
@Html.ValidationSummary(true)
<p>
User Name: @Html.DropDownListFor(x => x.SelectedId, new SelectList(Model.Users), "Select")
@*Role Name: @Html.DropDownList("RoleName", (IEnumerable<SelectListItem>)ViewBag.Roles, "Select ...")*@
Role Name: @Html.DropDownListFor(u => u.SelectedRoleId, new SelectList(Model.Roles), "Select ...")
</p>
<input type="submit" value="Save" />
}
<hr />
<h3>Get Roles for a User</h3>
@using (Html.BeginForm("GetRoles", "Role"))
{
@Html.AntiForgeryToken()
<p>
Username : @Html.TextBox("UserName")
<input type="submit" value="Get Roles for this User" />
</p>
}
@if (ViewBag.RolesForThisUser != null)
{
<div style="background-color:yellow;">
<h3>Roles for this user </h3>
<ol>
@foreach (string s in ViewBag.RolesForThisUser)
{
<li>@s</li>
}
</ol>
</div>
}
虽然我使用的是ViewBag但它的工作原理完全正常,但是对于下游的验证(必需的验证)无法实现,因此在这种情况下采用带有Required Annotation和ViewModel的ViewModel是推荐的方法。 感谢任何帮助。提前致谢 。 使用MVC 5,CodeFirst EF with Identity。
答案 0 :(得分:2)
您在视图模型中使用的是身份模型,而不是SelectListItem
。
在您的视图中更改模型
[Required]
public List<AppUser> Users { get; set; }
[Required]
public List<IdentityRole> Roles { get; set; }
到
public List<SelectListItem> Users { get; set; }
public List<SelectListItem> Roles { get; set; }
并向Required
和SelectedId
添加SelectedRoleId
属性。
在ManageUserRoles
操作中,将视图模型的填充更改为
model.Users = users.Select(s => new SelectListItem
{
Value = s.Id.ToString(),
Text = s.UserName.ToString()
});
var roles = context.Roles.ToList();
model.Roles = roles.Select(s => new SelectListItem
{
Value = s.Id.ToString(),
Text = s.Name.ToString()
});
顺便说一句,使用Select()
这样的
var roles = context.Roles.ToList();
roles.Select(s => new SelectListItem
{
Value = s.Id.ToString(),
Text = s.Name.ToString()
});
什么都不做。您必须将Select
的结果分配给变量。