使用HTML Helper访问子模型

I have an object which looks like this:

我有一个看起来像这样的对象:

public class QuestionSet
{
    [Required]
    public int Id { get; set; }

    [Required]
    public int ConferenceId { get; set; }

    [Required]
    public string Name { get; set; }

    public virtual ICollection<RegistrationQuestion> Questions { get; set; }

    public virtual ICollection<QuestionSetAssignee> QuestionSetAssignees { get; set; }

    public QuestionSet()
    {

    }

    public QuestionSet(int conferenceId)
    {
        this.ConferenceId = conferenceId;
    }
}

And the model for RegistrationQuestion looks like this:

RegistrationQuestion的模型如下所示:

public class RegistrationQuestion
{
    [Required]
    public int Id { get; set; }

    [Required]
    public int QuestionSetId { get; set; }

    [Required]
    public string QuestionText { get; set; }
}

When creating a QuestionSet, I would like to create its related RegistrationsQuestions at the same time. However, the Razor Html Helpers don't let me drill down to that level.

在创建QuestionSet时,我想同时创建其相关的RegistrationsQuestions。但是,Razor Html Helpers不会让我深入到那个级别。

I can do this:

我可以做这个:

@Html.LabelFor(model => model.Questions)

but not this (and this is what I want to be able to do):

但不是这个(这是我想要做的):

@Html.LabelFor(model => model.Questions.QuestionText)

Any guidance on how to achieve this?

有关如何实现这一目标的任何指导?

2 个解决方案

#1

You can get it working like this. I made small changes to your model, instead of using ICollection<>, I used IList<> which have indexer support and can easily be iterated.

你可以让它像这样工作。我对你的模型做了一些小改动,而不是使用ICollection <>,我使用了IList <>,它有索引器支持,可以很容易地迭代。

public class QuestionSet
{
    [Required]
    public int Id { get; set; }

    [Required]
    public int ConferenceId { get; set; }

    [Required]
    public string Name { get; set; }

    public virtual IList<RegistrationQuestion> Questions { get; set; }
}

public class RegistrationQuestion
{
    [Required]
    public int Id { get; set; }

    [Required]
    public int QuestionSetId { get; set; }

    [Required]
    public string QuestionText { get; set; }
}

I add following sample data in controller action -

我在控制器操作中添加以下示例数据 -

    public ActionResult Index()
    {
        QuestionSet q = new QuestionSet();
        q.Questions = new List<RegistrationQuestion>();
        q.Questions.Add(new RegistrationQuestion() { QuestionText = "hi1?" });
        q.Questions.Add(new RegistrationQuestion() { QuestionText = "hi2?" });
        q.Questions.Add(new RegistrationQuestion() { QuestionText = "hi3?" });
        return View(q);
    }

And then in your view, you can have iteration in following way -

然后在您的视图中,您可以按以下方式进行迭代 -

@for (int i = 0; i < Model.Questions.Count; i++)
{
    @Html.LabelFor(model => model.Questions[i].QuestionText, Model.Questions[i].QuestionText)
    @Html.EditorFor(model => model.Questions[i].QuestionText)
    <br/>
}

Output -

#2

I solved this by creating a partial view for the sub model and then dynamically inserting those (with JavaScript/jQuery) as needed.

我通过为子模型创建局部视图然后根据需要动态插入(使用JavaScript / jQuery)来解决这个问题。