MVC3 中 ViewBag 的替代方案

发布于 2024-11-06 10:01:34 字数 700 浏览 0 评论 0原文

我有一个 MVC3 Web 应用程序，需要在其中实现数据库搜索功能。我正在为我的搜索表单创建一个 ViewModel 类，以便将搜索参数从视图获取到控制器。我可以在控制器类中成功获取所有搜索参数（如果用户想要缩小搜索范围，则包括搜索查询和复选框）并使用存储库模式从数据库检索数据

var searchResult = _repository.GetItems(searchParms, chkbox1, chkbox2, ..., chkbox10)

之后，我将 searchResult 传递给分页助手，就像

var paginatedSearchResult = new PaginatedList<Items>(searchResult, page ?? 0, pageSize);

我显示的那样我的视图页面中检索到的数据

return View(paginatedSearchResult)

我面临的问题是，除了数据库中的数据之外，我还需要在我的视图页面中显示搜索查询字符串和主题（使用了哪个复选框），以便用户可以看到什么他们寻找。我没有找到任何合适的解决方案，不得不使用 ViewBag。现在我的Controller页面看起来很丑，有超过10个ViewBag。我知道必须有一些好的解决方案，但我找不到它。任何建议将不胜感激。

谢谢， ACS

原文

I have a MVC3 web application where I need to implement a database search functionality. I am creating a ViewModel class for my search form so that I get the search parameters from View to controller. I can successfully get all my search parameters (which includes search query and check boxes if user wants to narrow search) in my controller class and retrieve data from database using repository pattern

var searchResult = _repository.GetItems(searchParms, chkbox1, chkbox2, ..., chkbox10)

After this, I am passing my searchResult to pagination helper like

var paginatedSearchResult = new PaginatedList<Items>(searchResult, page ?? 0, pageSize);

I am displaying the retrieved data in my view page

return View(paginatedSearchResult)

The problem, I am facing is, besides the data from the database, I also need to show the search query string and topic (for which checkbox was used) in my view page so that user can see what they searched for. I did not find any proper solution to this and had to use ViewBag. And now my Controller page looks ugly with more than 10 ViewBag. I know there must some good solution to this but I am not able to find it.Any suggestions will be highly appreciated.

Thanks,
ACS

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屋顶上的小猫咪 2024-11-13 10:01:34

问题标题的直接答案是 - mvc 中 viewbag 的替代方案是强类型 ViewModel 类。看看创建视图模型

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风为裳 2024-11-13 10:01:34

你已经很接近了。
您有一个用于搜索的 ViewModel - 所以您显然知道如何创建视图模型。只需创建一个新的 ViewModel，将当前 ViewModel 作为属性，并将数据库搜索视图模型作为属性。

public class SearchViewModel
{
    public YourExistingSearchOptionsViewModel SearchViewModel {get;set}
    public PaginatedList SearchResults {get;set;}
}

显然这很粗糙——但希望你能明白其中的意思。

You are soooo close already.
You have a ViewModel you are using for the search - so you obviously know how to create a view model. Just create a new ViewModel that has your current ViewModel as a property and the database search viewmodel as a property.

public class SearchViewModel
{
    public YourExistingSearchOptionsViewModel SearchViewModel {get;set}
    public PaginatedList SearchResults {get;set;}
}

obviously that is very rough - but hopefully you get the idea there.

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