asp.net-mvc MVC - 如何将模型从视图传递到控制器
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MVC - How to pass model from view to controller
提问by Billy Logan
I am working with a model that needs to flow through a series of controllers and views manipulating it along the way(Only loading it on the first controller). Is there a way to persist the model from the view back down to a controller and so forth?
我正在使用一个模型，该模型需要流经一系列控制器，并在此过程中对其进行操作（仅将其加载到第一个控制器上）。有没有办法将模型从视图中持久化到控制器等等？
Here is my code.
这是我的代码。
Model:
模型：
public class ROWModel
{
#region Properties
//Request
public List<TBLRETURNABLEITEMS> TBLRETURNABLEITEMS { get; set; }
//public List<ReturnReasons> ReturnReasons { get; set; }
public int Order_No { get; set; }
public string First_Name {get; set; }
public string Last_Name {get; set; }
public string Company { get; set; }
public string Address_1 { get; set; }
public string Address_2 { get; set; }
public string City { get; set; }
public string State { get; set; }
public string Postal_Code { get; set; }
public string Email { get; set; }
public string Phone { get; set; }
public string CustomerCode {get; set; }
public string TerritoryCode {get; set; }
//Post
#endregion
#region Constructor
public ROWModel()
{ }
#endregion
}
public class ReturnableItems : IComparable<ReturnableItems>
{
private int _id;
private decimal _ordered;
private decimal _shipped;
public int Id
{
get { return _id; }
set { _id = value; }
}
public decimal Ordered
{
get { return _ordered; }
set { _ordered = value; }
}
public decimal Shipped
{
get { return _shipped; }
set { _shipped = value; }
}
}
}
After populating the model and sending it to the view everything is displayed using the model as it should be. I think stick the model like so on the form tag:
填充模型并将其发送到视图后，所有内容都将使用模型显示出来。我认为将模型像这样粘贴在表单标签上：
<% using (Html.BeginForm("Items", "ROW", Model))
Here is the post Items Action of the ROW controller:
这是 ROW 控制器的 post Items Action：
[ActionName("Items"), AcceptVerbs(HttpVerbs.Post)]
public ActionResult Items(ROWModel model, FormCollection collection)
Problem is Model doesn't return the list of TBLRETURNABLEITEMS i populated it with initially. It keeps the other properties i populated but not the list. How do i maintain this model's data without having to reload it on every controller should i want to.
问题是模型没有返回我最初填充它的 TBLRETURNABLEITEMS 列表。它保留我填充的其他属性，但不保留列表。我如何维护这个模型的数据，而不必在我想要的每个控制器上重新加载它。
回答by rrejc
I think that you can use TempData for that.
我认为您可以为此使用 TempData。
So something like this:
所以像这样：
[AcceptVerbs(HttpVerbs.Get)]
public ActionResult TestA()
{
MyModel model = new MyModel();
model.Something = "Test";
return View(model);
}
[AcceptVerbs(HttpVerbs.Post)]
public ActionResult TestA(MyModel model)
{
TempData["MyModel"] = model;
return RedirectToAction("TestB");
}
[AcceptVerbs(HttpVerbs.Get)]
public ActionResult TestB()
{
MyModel myModel = (MyModel)TempData["MyModel"];
return View(myModel);
}
回答by Robert Harvey
NerdDinner Step 6: ViewData and ViewModel
http://nerddinnerbook.s3.amazonaws.com/Part6.htm
NerdDinner 第 6 步：ViewData 和 ViewModel
http://nerddinnerbook.s3.amazonaws.com/Part6.htm
回答by ali62b
You can use session for this kind of problems. or you can use tempdata if the posts are sequential . and fetching each time from DB works if you run application in Intranet networks.
您可以使用 session 来解决此类问题。或者，如果帖子是连续的，您可以使用 tempdata。如果您在 Intranet 网络中运行应用程序，并且每次从 DB 获取都有效。
回答by Ajith Menon
I think in MVC as well session is a handy option instead of firefighting with the return to action with Viewmodel.
我认为在 MVC 中会话也是一个方便的选择，而不是通过 Viewmodel 返回操作来进行灭火。
回答by Paul
Getting a model (any model) from the view to the controller is pretty simple.
从视图到控制器获取模型（任何模型）非常简单。
Others on here have covered that part where you take in a model object as a param.
这里的其他人已经涵盖了将模型对象作为参数的部分。
what you seem to be missing is the binding of the list, which happens based on the names in your form elements in the view. basically,they have to look like C# list elements as strings. So, not knowing any of the properties of your list elements, something like:
您似乎缺少的是列表的绑定，这是根据视图中表单元素中的名称发生的。基本上，它们必须看起来像 C# 列表元素作为字符串。因此，不知道列表元素的任何属性，例如：
<%= Html.TextBox("model.TBLRETURNABLEITEMS[0].ItemId") %>
Obviously,that's just a string, so you can construct it in a loop to do many rows of returnables.
显然，这只是一个字符串，因此您可以在循环中构造它来执行多行可返回值。
