我刚刚开始基于此first-mvc-app tutorial
学习ASP.NET Core MVC我有一个数据库表' tblProducts'我可以使用
创建一个列出所有产品的表格模型:
public class tblProducts
{
//SQL table is named tblProducts
[Key]
public int ID { get; set; }
public DateTime Date { get; set; }
public string Field1 { get; set; }
public string Field2 { get; set; }
public string Product { get; set; } //<<Want separate tables split by this field
}
查看:
@model IEnumerable<LearnMVC.Models.tblProducts>
@{
ViewData["Title"] = "Index";
}
<h2>Index</h2>
<p>
<a asp-action="Create">Create New</a>
</p>
<table class="table">
<thead>
<tr>
<th>
@Html.DisplayNameFor(model => model.Date)
</th>
<th>
@Html.DisplayNameFor(model => model.Field1)
</th>
<th>
@Html.DisplayNameFor(model => model.Field2)
</th>
<th>
@Html.DisplayNameFor(model => model.Product)
</th>
<th></th>
</tr>
</thead>
<tbody>
@foreach (var item in Model)
{
<tr>
<td>
@Html.DisplayFor(modelItem => item.Date)
</td>
<td>
@Html.DisplayFor(modelItem => item.Field1)
</td>
<td>
@Html.DisplayFor(modelItem => item.Field2)
</td>
<td>
@Html.DisplayFor(modelItem => item.Product)
</td>
<td>
<a asp-action="Edit" asp-route-id="@item.ID">Edit</a> |
<a asp-action="Details" asp-route-id="@item.ID">Details</a> |
<a asp-action="Delete" asp-route-id="@item.ID">Delete</a>
</td>
</tr>
}
</tbody>
</table>
控制器:包含视图的默认MVC控制器,使用实体框架
public class tblProductsController : Controller
{
private readonly ApplicationDbContext _context;
public tblProductsController(ApplicationDbContext context)
{
_context = context;
}
// GET: tblProducts
public async Task<IActionResult> Index()
{
return View(await _context.tblProducts.ToListAsync());
}
// GET: tblProducts/Details/5
public async Task<IActionResult> Details(int? id)
{
if (id == null)
{
return NotFound();
}
var tblProducts = await _context.tblProducts.SingleOrDefaultAsync(m => m.ID == id);
if (tblProducts == null)
{
return NotFound();
}
return View(tblProducts);
}
// GET: tblProducts/Create
public IActionResult Create()
{
return View();
}
// POST: tblProducts/Create
// To protect from overposting attacks, please enable the specific properties you want to bind to, for
// more details see http://go.microsoft.com/fwlink/?LinkId=317598.
[HttpPost]
[ValidateAntiForgeryToken]
public async Task<IActionResult> Create([Bind("ID,Date,Field1,Field2,Product")] tblProducts tblProducts)
{
if (ModelState.IsValid)
{
_context.Add(tblProducts);
await _context.SaveChangesAsync();
return RedirectToAction("Index");
}
return View(tblProducts);
}
// GET: tblProducts/Edit/5
public async Task<IActionResult> Edit(int? id)
{
if (id == null)
{
return NotFound();
}
var tblProducts = await _context.tblProducts.SingleOrDefaultAsync(m => m.ID == id);
if (tblProducts == null)
{
return NotFound();
}
return View(tblProducts);
}
// POST: tblProducts/Edit/5
// To protect from overposting attacks, please enable the specific properties you want to bind to, for
// more details see http://go.microsoft.com/fwlink/?LinkId=317598.
[HttpPost]
[ValidateAntiForgeryToken]
public async Task<IActionResult> Edit(int id, [Bind("ID,Date,Field1,Field2,Product")] tblProducts tblProducts)
{
if (id != tblProducts.ID)
{
return NotFound();
}
if (ModelState.IsValid)
{
try
{
_context.Update(tblProducts);
await _context.SaveChangesAsync();
}
catch (DbUpdateConcurrencyException)
{
if (!tblProductsExists(tblProducts.ID))
{
return NotFound();
}
else
{
throw;
}
}
return RedirectToAction("Index");
}
return View(tblProducts);
}
// GET: tblProducts/Delete/5
public async Task<IActionResult> Delete(int? id)
{
if (id == null)
{
return NotFound();
}
var tblProducts = await _context.tblProducts.SingleOrDefaultAsync(m => m.ID == id);
if (tblProducts == null)
{
return NotFound();
}
return View(tblProducts);
}
// POST: tblProducts/Delete/5
[HttpPost, ActionName("Delete")]
[ValidateAntiForgeryToken]
public async Task<IActionResult> DeleteConfirmed(int id)
{
var tblProducts = await _context.tblProducts.SingleOrDefaultAsync(m => m.ID == id);
_context.tblProducts.Remove(tblProducts);
await _context.SaveChangesAsync();
return RedirectToAction("Index");
}
private bool tblProductsExists(int id)
{
return _context.tblProducts.Any(e => e.ID == id);
}
}
数据\ ApplicationDbContext.cs :
public class ApplicationDbContext : IdentityDbContext<ApplicationUser>
{
public ApplicationDbContext(DbContextOptions<ApplicationDbContext> options)
: base(options)
{
}
protected override void OnModelCreating(ModelBuilder builder)
{
base.OnModelCreating(builder);
// Customize the ASP.NET Identity model and override the defaults if needed.
// For example, you can rename the ASP.NET Identity table names and more.
// Add your customizations after calling base.OnModelCreating(builder);
}
public DbSet<tblProducts> tblProducts { get; set; }
}
请有人帮忙解释(或了解任何好的教程)如何根据相同的模型字段创建多个表格,但每个表格都按照“产品&#39;产品”分类?
假设有5个产品,我希望看到5个表都具有相同的字段Date,Field1,Field2&amp;产品,但产品对每个表都是唯一的。
我不知道有多少产品,所以需要一些逻辑来确定需要多少个表。我不熟悉这一点,我不确定我是否需要多个模型,或者是否可以在控制器或视图中做一些聪明的事情,因为数据都来自同一个表格。
我尝试了一些搜索,但它们似乎是非mvc或基于多个不同的模型(例如,这类似但每个表{(3}}有不同的数据源)
TL; DR :ASP.NET MVC在单个数据库表中按字段显示多个表的方式是什么?
答案 0 :(得分:0)
更新了fiddle以更好地反映您对不知道您需要多少桌子的要求 - 抱歉,第一次错过了。和以前一样,小提琴并没有运行,但它应该让你很好地了解它的用途。
就个人而言,我不希望在视图中不具备那种逻辑,并且将其移回控制器当然是可能的,但是将其视为更多的概念证明。