如何使用多种模型在ASP.NET MVC一种看法？ [英] How to use multiple models in one view for ASP.NET MVC?

问题描述

我读过关于SO类似的问题，但似乎无法弄清楚这个问题，这是特定的DbContext对象（我认为）。下面是一些伪code来说明。

I've read similar questions on SO but can't seem to figure out this issue, which is specific to DBContext objects (I think). Here's some dummy code to illustrate.

我有以下的code在我的Index（）动作：

I have the following code in my Index() action:

    public ActionResult Index()
    {
        AnimalDBContext db = new AnimalDBContext();

        return View(db.Dogs);
    }

我有以下的code代表我的模型：

I have the following code for my models:

    public class Dog
    {
        public int ID { get; set; }
        public string name { get; set; }
        public string breed { get; set; }
    }

    public class AnimalDBContext : DbContext
    {
        public DbSet<Dog> Dogs { get; set; }
    }

在我看来，我有以下几点：

In my view I have the following:

@model IEnumerable<AnimalProject.Models.Dog>
    @foreach (var d in Model)
    {
    <h3>@d.name</h3>
    <h2>@d.breed</h2>
    }

通过一切都在我的数据库每条狗的伟大工程，视图将循环。不过，我有，我想在同另外一个表中的另一组的DbContext数据。我希望能够在数据库中为该表枚举各项目为好。

Everything works great, the view will loop through every dog in my database. However, I have another set of DBContext data from another table that I want in the same view. I want to be able to enumerate each item in the database for that table as well.

这是我想要的，如果你明白我的意思：

This is what I want, if you catch my drift:

@model IEnumerable<AnimalProject.Models.Dog>
@model IEnumerable<AnimalProject.Models.Cat>
    @foreach (var d in Dog)
    {
    <h3>@d.name</h3>
    <h2>@d.breed</h2>
    }
    @foreach (var c in Cat)
    {
    <h3>@c.name</h3>
    <h2>@c.breed</h2>
    }

我已经试过类组合在一起，并使用部分观点，但显然你不能在一个局部视图不同的模式，因为我总是得到错误信息：

I have tried grouping the classes together and using a partial view, but apparently you can't have a different model in a partial view, because I always get the error message:

模型项目传入
  字典是类型
  System.Data.Entity.DbSet 1 [AnimalProject.Models.Dog]'，
  但本词典需要一个模型
  类型项目
  System.Collections.Generic.IEnumerable 1 [AnimalProject.Models.Cat]'。

"The model item passed into the dictionary is of type 'System.Data.Entity.DbSet1[AnimalProject.Models.Dog]', but this dictionary requires a model item of type 'System.Collections.Generic.IEnumerable1[AnimalProject.Models.Cat]'."

所以，我怎么可以使用多种模型在我看来，无论得到我从数据库中的单独的表所需的数据？

So, how can I use multiple models in my view that both get the data I want from separate tables in the database?

推荐答案

有关创建自定义视图模型类什么：

What about creating custom view model class:

public AnimalModel
{
    public IEnumerable<Dog> Dogs { get; set; }
    public IEnumerable<Cat> Cats { get; set; }
} 

在指数

填写这一模式，并把它传递给将期望 AnimalModel 而不是可枚举的看法。

Fill this model in Index and pass it to the view which will expect AnimalModel instead of enumerables.

编辑：

填充模型：

public ActionResult Index()
{
    using (var db = new AnimalDBContext())
    {
        var model = new AnimalModel 
        {
            Dogs = db.Dogs.ToList(),
            Cats = db.Cats.ToList()
        };

        return View(model);
    }
}

查看（我从来没有使用剃刀，所以我希望这是正确的）：

View (I have never used Razor so I hope this is correct):

@model AnimalProject.Models.AnimalModel
@foreach (var d in Model.Dogs)
{
  <h3>@d.name</h3>
  <h2>@d.breed</h2>
}
@foreach (var c in Model.Cats)
{
  <h3>@c.name</h3>
  <h2>@c.breed</h2>
}

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