ViewModel的“创建”视图未生成用户输入

问题描述

无论如何，我还是.net的新手，我目前有2个表，即Tag和Recipe。标签具有Name和RecipeId，而配方具有Name，Instructions和 public class CreateRecipe { // A list of all the tags available public List<Tag> allTags { get; set; } // A Recipe object public Recipe Recipe { get; set; } } 。基本上，您可以在创建食谱时为食谱分配标签，这是我遇到的麻烦，目前仅在“创建食谱”视图上显示标签。

进行了一些研究，很显然，有多种方法可以在View上使用2个模型。我选择了viewmodel方法。 （对于我来说，最好的方法是什么？）

viewmodel类如下：

        // GET: Recipe/Create
        public ActionResult Create()
        {
            ViewBag.Message = "Create Recipe";

            CreateRecipe createRecipe = new CreateRecipe();

            //Convert DB Tag (table) rows (using dataLibrary.Models.Tag class) to List of MVCAPP.Models.Tag class objects
            var data = TagProcessor.LoadTags();
            List<Tag> tags = new List<Tag>();

            foreach (var row in data)
            {
                tags.Add(new Tag
                {
                    TagId = row.TagId,Name = row.Name
                });
            }

            // Assigning createRecipe's properties
            createRecipe.allTags = tags;
            createRecipe.Recipe = new Recipe();

            return View(createRecipe);
        }

RecipeController的Create方法：

viewmodels.CreateRecipe

自动生成@model MVCApp.viewmodels.CreateRecipe @{ ViewBag.Title = "Create"; } <h2>Create</h2> @using (Html.BeginForm()) { @Html.AntiForgeryToken() <div class="form-horizontal"> <h4>Create Recipe</h4> <hr /> @Html.ValidationSummary(true,"",new { @class = "text-danger" }) <div class="form-group"> <div class="col-md-offset-2 col-md-10"> <input type="submit" value="Create" class="btn btn-default" /> </div> </div> </div> } <div> @Html.ActionLink("Back to List","Index") </div> @section Scripts { @Scripts.Render("~/bundles/jqueryval") } 的创建视图后

Tag

如您所见，它仅创建了一个“提交/创建”按钮

The auto-generated Create View

谢谢

作为参考，这里是Recipe和 public class Tag { public int TagId { get; set; } [required] [StringLength(50,ErrorMessage = "Tag cannot be longer than 50 characters.")] [display(Name = "Tag Name:")] [RegularExpression(@"^[A-Z]+[a-zA-Z""'\s-]*$",ErrorMessage = "Must start with a capital letter,only alphabetic characters and no spaces allowed.")] public string Name { get; set; } } 类

    public class Recipe
    {
        public int RecipeId { get; set; }

        [required]
        [StringLength(50,ErrorMessage = "Title cannot be longer than 50 characters.")]
        [display(Name = "Title:")]
        [RegularExpression(@"^[A-Z]+[a-zA-Z""'\s-]*$",only alphabetic characters and no spaces allowed.")]
        public string Name { get; set; }

        [required]
        [StringLength(500,ErrorMessage = "Instructions cannot be longer than 500 characters.")]
        [display(Name = "Instructions:")]
        [RegularExpression(@"^[A-Z]+[a-zA-Z""'\s-]*$",only alphabetic characters and no spaces allowed.")]
        public string Instructions { get; set; }
    }

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解决方法

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