public async Task <IActionResult> Edit(string id, [Bind("Id,UserId,RoleId")] UserRole userRole)
{
if (id != userRole.Id)
{
return(NotFound());
}
if (ModelState.IsValid)
{
try
{
// 重复判断 是否存在UserId和RoleId的关系
if (await UserRoleManager.Exist(ur => ur.RoleId == userRole.RoleId && ur.UserId == userRole.UserId))
{
ModelState.AddModelError("All", "角色已经被绑定在该用户上");
ViewData["RoleId"] = new SelectList(RoleManager.Find(), nameof(Role.Id), nameof(Role.Name), userRole.RoleId);
ViewData["UserId"] = new SelectList(UserManager.Find(), nameof(Entitys.User.Id), nameof(Entitys.User.SignName), userRole.UserId);
return(View(userRole));
}
else
{
await UserRoleManager.Update(userRole);
}
}
catch (DbUpdateConcurrencyException)
{
if (!await UserRoleManager.Exist(ur => ur.Id == userRole.Id))
{
return(NotFound());
}
else
{
throw;
}
}
return(RedirectToAction(nameof(Index)));
}
ViewData["RoleId"] = new SelectList(RoleManager.Find(), nameof(Role.Id), nameof(Role.Name), userRole.RoleId);
ViewData["UserId"] = new SelectList(UserManager.Find(), nameof(Entitys.User.Id), nameof(Entitys.User.SignName), userRole.UserId);
return(View(userRole));
}