使用 javascript 调用 ViewComponents

moh*_*991 3 ajax jquery razor asp.net-core asp.net-core-viewcomponent

我试图使用javascript调用ViewComponent来促进页面加载,现在我使用razor调用了viewcomponent但是页面加载需要很长时间,怎么做?

这是控制器中的方法:

public async Task<IViewComponentResult> InvokeAsync(string id)
{
    //var notifications = _context.Notifications.Include(m => m.ApplicationUser).Include(m => m.Sender).OrderByDescending(m => m.Id);

    return View(await _context.Follows.Include(f=>f.User.University).Include(f=>f.User.Faculty).Where(n=>n.FollowedUserId==id).ToListAsync());
}
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和方法调用(jQuery):

<script>
    $(document).ready(function () {
        $('#viewallfollowers').click(
            function () {

                $("#followersrefresh").load("@await Component.InvokeAsync("Follower", new { id=Model.ApplicationUser.Id })");

              });
    });
</script>
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Lou*_*raQ 6

ViewComponent不能直接在js的InvokeAsync中加载,它会在你的页面加载而不是点击事件被触发时获取相应的html,所以你的页面会加载很长时间,那是因为你的js出错了。

为了实现点击事件加载viewcomponent视图,需要ajax get request在click事件中使用 应用到controller到return the htmlviewcomponent的代码中。

控制器:

 public IActionResult GetMyViewComponent(string uid)
        {
            return ViewComponent("Follower", new { id = uid});//it will call Follower.cs InvokeAsync, and pass id to it.
        }
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看法:

@model WebApplication_core_mvc.Models.MyCompModel
@{
    ViewData["Title"] = "Index";
    Layout = "~/Views/Shared/_Layout.cshtml";
}

<h1>Index</h1>

@section Scripts{
    <script>
   $(document).ready(function () {
        $('#viewallfollowers').click(function () {
            {
                $("#followersrefresh").empty();
                var _url = '@Url.Action("GetMyViewComponent", "Home")';
                $.ajax({
                    type: "GET",
                    url: _url,
                    data: { uid: $(this).prop("name") },
                    success: function (result) {
                        $("#followersrefresh").html(result);
                    },
                });
            }
        });
    });
    </script>
}
<input id="viewallfollowers" type="button" value="button" name="@Model.ApplicationUser.Id"/>
<div id="followersrefresh" >
</div>
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ViewComponents.Follower.cs:

 public class Follower : ViewComponent
    {
        private readonly MyDbContext _context;
        public Follower(MyDbContext context)
        {
            _context = context;
        }
        public async Task<IViewComponentResult> InvokeAsync(string id)
        {
            return View(await _context.Follows.Include(f=>f.User.University).Include(f=>f.User.Faculty).Where(n=>n.FollowedUserId==id).ToListAsync());
        }
    }
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这是测试结果: 在此处输入图片说明