我正在创建 asp.net mvc 5 应用程序，在那个应用程序中我有一个模块来过滤带有多个下拉列表的结果，
结果取决于下拉菜单
搜索表单和搜索结果显示在同一 View 页面中
我已经在 stackoverflow 社区的帮助下实现了这个模块，
在那个模块中，它在第一个下拉菜单中工作正常，但是当我放置多个下拉菜单时，它变成了锁，当我点击搜索按钮时没有结果
这是模型类
public class ProductCollection
{
public string Product_ID { get; set; }
public string ProductType_ID { get; set; }
public string Product_TypeEn { get; set; }
public string Product_TypeAr { get; set; }
public string ProductCategory_ID { get; set; }
public string Product_CategoryEn { get; set; }
public string Product_CategoryAr { get; set; }
public string Country_ID { get; set; }
public string Subsidary_Country { get; set; }
public string Susidary_ID { get; set; }
public string Susidary_NameEn { get; set; }
public string Susidary_NameAr { get; set; }
public string Product_Name_En { get; set; }
public string Product_Description_En { get; set; }
public string Product_Name_Ar { get; set; }
public string Product_Description_Ar { get; set; }
public string Status { get; set; }
public string CreatedBy { get; set; }
public Nullable<System.DateTime> CreatedDate { get; set; }
public string UpdatedBy { get; set; }
public Nullable<System.DateTime> UpdatedDate { get; set; }
}
// View models
public class SearchVM
{
public string Type { get; set; }
public string Category { get; set; }
public string Country { get; set; }
public string Subsidary { get; set; }
public DateTime? Date { get; set; }
public SelectList TypeList { get; set; }
public SelectList CategoryList { get; set; }
public SelectList CountryList { get; set; }
public SelectList SubsidaryList { get; set; }
}
public class ProductsVM
{
public int ID { get; set; }
public string Name { get; set; }
public string Category { get; set; }
}
// Data model
public class Type
{
public string ProductTypeID { get; set; }
public string ProductTypeNameEn { get; set; }
}
public class Category
{
public string ProductCategoryID { get; set; }
public string ProductCategoryNameEn { get; set; }
}
public class Country
{
public string Country_ID { get; set; }
public string Country_Name { get; set; }
}
public class Subsidary
{
public string SubsidaryID { get; set; }
public string SubsidaryNameEn { get; set; }
}
这是查看页面
@model project_name.Models.SearchVM
@{
ViewBag.Title = "Product_Search2";
Layout = "~/Views/Shared/_Layout.cshtml";
}
<h2>Product Search</h2>
<!DOCTYPE html>
<!-- template from http://getbootstrap.com/getting-started -->
<html lang="en">
<head>
<meta charset="utf-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, initial-scale=1">
<title>Bootstrap 101 Template</title>
<!-- CSS Includes -->
<link rel="stylesheet" href="//netdna.bootstrapcdn.com/bootstrap/3.1.1/css/bootstrap.min.css">
<style type="text/css">
table {
width: 100%;
margin-top: 25px;
}
</style>
</head>
<body>
<div class="container">
<div class="col-md-6 col-md-offset-3">
<h1>Hello Stranger</h1>
@using (Html.BeginForm())
{
<div class="form-group">
@Html.LabelFor(m => m.Type)
@Html.DropDownListFor(m => m.Type, Model.TypeList, "Select the type", new { @class = "form-control" })
@Html.LabelFor(m => m.Category)
@Html.DropDownListFor(m => m.Category, Model.CategoryList, "Select the category", new { @class = "form-control" })
@Html.LabelFor(m => m.Country)
@Html.DropDownListFor(m => m.Country, Model.CountryList, "Select the country", new { @class = "form-control" })
@Html.LabelFor(m => m.Subsidary)
@Html.DropDownListFor(m => m.Subsidary, Model.SubsidaryList, "Select the subsidary", new { @class = "form-control" })
</div>
<button id="search" type="button" class="btn btn-success submit">Search</button>
}
<table>
<thead>
<tr><th>ID</th><th>Product name</th><th>Category</th><th>Action</th></tr>
</thead>
<tbody id="table"></tbody>
</table>
<table id="template" style="display: none;">
<tr><td></td><td></td><td></td><td><a>Edit</a></td></tr>
<table>
</div>
</div>
<!-- JS includes -->
<script src="//ajax.googleapis.com/ajax/libs/jquery/1.11.0/jquery.min.js"></script>
<script src="//netdna.bootstrapcdn.com/bootstrap/3.1.1/js/bootstrap.min.js"></script>
<script src="//ajax.aspnetcdn.com/ajax/jquery.validate/1.11.1/jquery.validate.min.js"></script>
<script src="//ajax.aspnetcdn.com/ajax/mvc/4.0/jquery.validate.unobtrusive.min.js"></script>
<script type="text/javascript">
var url = '@Url.Action("FetchProducts")';
var editUrl = '@Url.Action("Edit")';
var type = $('#Type');
var template = $('#template');
var table = $('#table');
$('#search').click(function() {
table.empty();
$.getJSON(url, { type: type.val(), category: category.val(), country: country.val(), subsidary: subsidary.val()}, function (data) {
$.each(data, function(index, item) {
var clone = template.clone();
var cells = clone.find('td');
cells.eq(0).text(item.ID);
cells.eq(1).text(item.Name);
cells.eq(2).text(item.Category);
var href = '@Url.Action("Edit")' + '/' + item.ID;
cells.eq(3).children('a').attr('href', href);
table.append(clone.find('tr'));
});
});
});
</script>
</body>
</html>
这是 Controller 类
公共(public)类 HomeController : Controller
{
public ProjectEntities db = new ProjectEntities();
[HttpGet]
public ActionResult Product_Search2()
{
var types = db.AB_ProductType.ToList();
var categories = db.AB_ProductTypeCategory.ToList();
var countries = db.AB_Country.ToList();
var subsidiaries = db.AB_Subsidary.ToList();
// ...
SearchVM model = new SearchVM()
{
TypeList = new SelectList(types, "ProductTypeID", "ProductTypeNameEn"),
CategoryList = new SelectList(categories, "ProductCategoryID", "ProductCategoryNameEn"),
CountryList = new SelectList(countries, "Country_ID", "Country_Name"),
SubsidaryList = new SelectList(subsidiaries, "SubsidaryID", "SubsidaryNameEn")
// ....
};
return View(model);
}
[HttpGet]
public JsonResult FetchProducts(string type, string category, string country, string subsidary, DateTime? date)
{
IEnumerable<ProductCollection> products = (from P in db.AB_Product
join S in db.AB_Subsidary on P.Subsidary_ID equals S.SubsidaryID
where P.Status != "Active"
select new ProductCollection
{
Product_ID = P.ProductID,
ProductType_ID = P.ProductTypeID,
ProductCategory_ID = P.ProductCategoryID,
Product_Name_En = P.ProductTitleEn,
Susidary_ID = P.Subsidary_ID,
Country_ID = S.Country,
CreatedDate = P.CreatedDate,
Status = P.Status
}
).ToList();
var data = products.Select(p => new
{
ID = p.Product_ID,
Name = p.Product_Name_En,
Category = p.ProductCategory_ID
});
return Json(data, JsonRequestBehavior.AllowGet);
}
}
一旦我改变 $.getJSON(url, { type: type.val(), category: category.val(), country: country.val(), subsidary: subsidary.val()}, function (data) { to $.getJSON(url, { type: type.val()}, function (data) { in script in view page this working，我的有什么问题方法？
最佳答案
我认为您错过了 category ,country ,subsidiary 的其余变量在脚本中
在 <script></script> 内传递上述字段的其余值
就像您为 Type 传递了值一样像这样var type = $('#Type');您需要传递其余值。
在 Razor 中，您可以通过提供该模型属性来引用变量
例如:m.Type可以用作 ID #Type在脚本中
关于javascript - 带有级联下拉列表的搜索表单在 asp.net mvc 中不起作用，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/32559194/