C# 如何拥有';详情';和';创建';同样的观点?MVC
下面的代码(在控制器中)从上一页读取特定行数据(通过C# 如何拥有';详情';和';创建';同样的观点?MVC,c#,sql-server,asp.net-mvc,entity-framework,C#,Sql Server,Asp.net Mvc,Entity Framework,下面的代码(在控制器中)从上一页读取特定行数据(通过@Html.ActionLink(“细节”,“细节”,new{id=item.id})在视图中获取id) 到目前为止还不错,但现在我想允许访问者/用户留下评论,给出喜欢/不喜欢的东西等等。我想这是一个结合了细节/创建(换句话说,读取/插入)模板的视图?我必须在控制器中做什么才能使其工作 从现在开始,我不知道该做什么,因为我是MVC的新手 这就是我的数据库的样子:(从EF模型中选择(数据库优先)): 用户: public System.G
@Html.ActionLink(“细节”,“细节”,new{id=item.id})
在视图中获取id
)
到目前为止还不错,但现在我想允许访问者/用户留下评论,给出喜欢/不喜欢的东西等等。我想这是一个结合了细节/创建(换句话说,读取/插入)模板的视图?我必须在控制器中做什么才能使其工作
从现在开始,我不知道该做什么,因为我是MVC的新手
这就是我的数据库的样子:(从EF模型中选择(数据库优先)):
用户:
public System.Guid Id { get; set; }
public string UserName { get; set; }
public string Password { get; set; }
public string Email { get; set; }
评论:(作者创建评论的地方)
CommentReview:(review从其他用户那里获得评论)
UserReview:(如果用户已经喜欢该评论,避免多次喜欢)
显示选定行详细信息的视图如下所示:
<dl class="dl-horizontal">
<dt>
@Html.DisplayNameFor(model => model.Title)
</dt>
<dd>
@Html.DisplayFor(model => model.Title)
</dd>
<dt>
@Html.DisplayNameFor(model => model.Description)
</dt>
<dd>
@Html.DisplayFor(model => model.Description)
</dd>
@* ... and so on. Not sure how to add "create"-inputs for e.g. comments etc*@
@DisplayNameFor(model=>model.Title)
@DisplayFor(model=>model.Title)
@DisplayNameFor(model=>model.Description)
@DisplayFor(model=>model.Description)
@* ... 等等不确定如何添加“创建”-输入,例如注释等*@
我正在使用
Session[“LoggedUserID”]
获取当前用户的Id
。首先稍微更改您的实体以配置它们之间的关系:
public class User
{
[Key]
public System.Guid Id { get; set; }
public string UserName { get; set; }
public string Password { get; set; }
public string Email { get; set; }
public virtual ICollection<CommentToReview> Comments { get; set; }
public virtual ICollection<UserToReview> Reviews { get; set; }
}
public class Review
{
[Key]
public System.Guid Id { get; set; }
public System.Guid CreatorUserId { get; set; }
public string Title { get; set; }
public string Description { get; set; }
public System.DateTime CreatedDate { get; set; }
public int UserRating { get; set; }
public int LikeCount { get; set; }
public int DislikeCount { get; set; }
public virtual ICollection<CommentToReview> Comments { get; set; }
public virtual ICollection<UserToReview> Users { get; set; }
}
public class CommentToReview
{
[Key]
public System.Guid Id { get; set; }
[ForeignKey("User")]
public System.Guid UserId { get; set; }
public virtual User User { get; set; }
[ForeignKey("Review")]
public System.Guid ReviewId { get; set; }
public virtual Review Review { get; set; }
public string Comment { get; set; }
public System.DateTime CreatedDate { get; set; }
}
public class UserToReview
{
[Key]
public System.Guid Id { get; set; }
[ForeignKey("User")]
public System.Guid UserId { get; set; }
public virtual User User { get; set; }
[ForeignKey("Review")]
public System.Guid ReviewId { get; set; }
public virtual Review Review { get; set; }
public bool HasLiked { get; set; }
}
然后,应在“视图/审阅”文件夹下创建以下部分视图:
_CreateCommentPartial.cshtml:用于在同一页的详细信息中创建注释
@using (Html.BeginForm("CreatePartial", "Reviews"))
{
@Html.AntiForgeryToken()
<div class="form-horizontal">
<h4>CommentToReview</h4>
<hr />
@Html.ValidationSummary(true, "", new { @class = "text-danger" })
@Html.HiddenFor(model=> model.ReviewId)
<div class="form-group">
@Html.LabelFor(model => model.Comment, htmlAttributes: new { @class = "control-label col-md-2" })
<div class="col-md-10">
@Html.EditorFor(model => model.Comment, new { htmlAttributes = new { @class = "form-control" } })
@Html.ValidationMessageFor(model => model.Comment, "", new { @class = "text-danger" })
</div>
</div>
<div class="form-group">
<div class="col-md-offset-2 col-md-10">
<input type="submit" value="Create" class="btn btn-default" />
</div>
</div>
</div>
}
@section Scripts {
@Scripts.Render("~/bundles/jqueryval")
}
@使用(Html.BeginForm(“CreatePartial”、“Reviews”))
{
@Html.AntiForgeryToken()
评论视图
@Html.ValidationSummary(true,“,new{@class=“text danger”})
@Html.HiddenFor(model=>model.ReviewId)
@LabelFor(model=>model.Comment,htmlAttributes:new{@class=“controllabel col-md-2”})
@EditorFor(model=>model.Comment,new{htmlAttributes=new{@class=“form control”})
@Html.ValidationMessageFor(model=>model.Comment,“,new{@class=“text danger”})
}
@节脚本{
@Scripts.Render(“~/bundles/jqueryval”)
}
_CommentDetailPartial.cshtml:用于显示现有注释详细信息
@model MvcApp.Models.CommentToReview
<div class="panel panel-default">
<div class="panel-heading">@Model.User.Email</div>
<div class="panel-body">
@Model.Comment
</div>
<div class="panel-footer">@Model.CreatedDate.ToString()
</div>
</div>
@model MvcApp.Models.commentoreview
@Model.User.Email
@模型.注释
@Model.CreatedDate.ToString()
最后,修改审阅的详细信息视图(Views/Reviews/Details.cshtml)
@model MvcApp.Models.Review
@{
ViewBag.Title=“详细信息”;
}
细节
复习
@DisplayNameFor(model=>model.Title)
@DisplayFor(model=>model.Title)
@DisplayNameFor(model=>model.Description)
@DisplayFor(model=>model.Description)
@DisplayNameFor(model=>model.CreatedDate)
@DisplayFor(model=>model.CreatedDate)
评论
@foreach(Model.Comments中的var注释)
{
RenderPartial(“\u commentdetailsparial.cshtml”,comment);
}
@{
var newComment=new MvcApp.Models.commentoreview{ReviewId=Model.Id};
Html.RenderPartial(“_CreateComment”,newComment);
}
@ActionLink(“编辑”,“编辑”,新的{id=Model.id})|
@ActionLink(“返回列表”、“索引”)
请注意,为了简单起见,我在Review Controller和View下创建了所有PartialView和actions。另外,当你添加一条新的评论时,它会刷新页面,也许你最好使用ajax来获得更好的性能。我明白了,你可以使用部分视图。只有一个问题,我如何共享数据,比如说一个带有部分视图的
Id
?例如,我想在review
(view1)中显示特定行,我想commentoreview
(view2)使用与review
(view1)相同的Id
。您可以使用该视图的模型,例如在partialview中使用@Html.ActionLink(“commentoreview”,“Details”,new{Id=Model.Id})
若要发送该型号的特定Id
,请创建一个新版本,并将您的代码和您尝试过的代码放在一起。也许这个示例对您有好处(不要忘记检查第2部分)
<dl class="dl-horizontal">
<dt>
@Html.DisplayNameFor(model => model.Title)
</dt>
<dd>
@Html.DisplayFor(model => model.Title)
</dd>
<dt>
@Html.DisplayNameFor(model => model.Description)
</dt>
<dd>
@Html.DisplayFor(model => model.Description)
</dd>
@* ... and so on. Not sure how to add "create"-inputs for e.g. comments etc*@
public class User
{
[Key]
public System.Guid Id { get; set; }
public string UserName { get; set; }
public string Password { get; set; }
public string Email { get; set; }
public virtual ICollection<CommentToReview> Comments { get; set; }
public virtual ICollection<UserToReview> Reviews { get; set; }
}
public class Review
{
[Key]
public System.Guid Id { get; set; }
public System.Guid CreatorUserId { get; set; }
public string Title { get; set; }
public string Description { get; set; }
public System.DateTime CreatedDate { get; set; }
public int UserRating { get; set; }
public int LikeCount { get; set; }
public int DislikeCount { get; set; }
public virtual ICollection<CommentToReview> Comments { get; set; }
public virtual ICollection<UserToReview> Users { get; set; }
}
public class CommentToReview
{
[Key]
public System.Guid Id { get; set; }
[ForeignKey("User")]
public System.Guid UserId { get; set; }
public virtual User User { get; set; }
[ForeignKey("Review")]
public System.Guid ReviewId { get; set; }
public virtual Review Review { get; set; }
public string Comment { get; set; }
public System.DateTime CreatedDate { get; set; }
}
public class UserToReview
{
[Key]
public System.Guid Id { get; set; }
[ForeignKey("User")]
public System.Guid UserId { get; set; }
public virtual User User { get; set; }
[ForeignKey("Review")]
public System.Guid ReviewId { get; set; }
public virtual Review Review { get; set; }
public bool HasLiked { get; set; }
}
[HttpPost]
[ValidateAntiForgeryToken]
public ActionResult CreateComment([Bind(Include = "Id,UserId,ReviewId,Comment,CreatedDate")] CommentToReview commentToReview)
{
if (ModelState.IsValid)
{
commentToReview.Id = Guid.NewGuid();
commentToReview.UserId = Session["LoggedUserID"].ToString();
commentToReview.CreatedDate = DateTime.Now;
db.CommentToReviews.Add(commentToReview);
db.SaveChanges();
return RedirectToAction("Details", "Reviews", new { id = commentToReview.ReviewId });
}
return RedirectToAction("Details", "Reviews", new { id = commentToReview.ReviewId });
}
@using (Html.BeginForm("CreatePartial", "Reviews"))
{
@Html.AntiForgeryToken()
<div class="form-horizontal">
<h4>CommentToReview</h4>
<hr />
@Html.ValidationSummary(true, "", new { @class = "text-danger" })
@Html.HiddenFor(model=> model.ReviewId)
<div class="form-group">
@Html.LabelFor(model => model.Comment, htmlAttributes: new { @class = "control-label col-md-2" })
<div class="col-md-10">
@Html.EditorFor(model => model.Comment, new { htmlAttributes = new { @class = "form-control" } })
@Html.ValidationMessageFor(model => model.Comment, "", new { @class = "text-danger" })
</div>
</div>
<div class="form-group">
<div class="col-md-offset-2 col-md-10">
<input type="submit" value="Create" class="btn btn-default" />
</div>
</div>
</div>
}
@section Scripts {
@Scripts.Render("~/bundles/jqueryval")
}
@model MvcApp.Models.CommentToReview
<div class="panel panel-default">
<div class="panel-heading">@Model.User.Email</div>
<div class="panel-body">
@Model.Comment
</div>
<div class="panel-footer">@Model.CreatedDate.ToString()
</div>
</div>
@model MvcApp.Models.Review
@{
ViewBag.Title = "Details";
}
<h2>Details</h2>
<div>
<h4>Review</h4>
<hr />
<dl class="dl-horizontal">
<dt>
@Html.DisplayNameFor(model => model.Title)
</dt>
<dd>
@Html.DisplayFor(model => model.Title)
</dd>
<dt>
@Html.DisplayNameFor(model => model.Description)
</dt>
<dd>
@Html.DisplayFor(model => model.Description)
</dd>
<dt>
@Html.DisplayNameFor(model => model.CreatedDate)
</dt>
<dd>
@Html.DisplayFor(model => model.CreatedDate)
</dd>
</dl>
<h6>Comments</h6>
<hr />
@foreach(var comment in Model.Comments)
{
Html.RenderPartial("_CommentDetailsPartial.cshtml", comment);
}
<br />
@{
var newComment = new MvcApp.Models.CommentToReview { ReviewId = Model.Id };
Html.RenderPartial("_CreateComment", newComment);
}
</div>
<p>
@Html.ActionLink("Edit", "Edit", new { id = Model.Id }) |
@Html.ActionLink("Back to List", "Index")
</p>