從 ViewModel 更新 session 數據
[英]update session data from ViewModel
問題描述
在這里我更新了我的數量。 我將如何使用或注入這個更新的數量？
[HttpGet]
public ActionResult Details(int? id)
{
ViewBag.product = _db.Spray.ToList();
if (id == null)
{
return NotFound();
}
var hi = _db.Spray.Include(c => c.ProductTypes).FirstOrDefault(c => c.Id == id);
ProductVm product = new ProductVm
{
Name = hi.Name,
Id = hi.Id,
Image=hi.Image,
Image1=hi.Image1,
Quantity = hi.Quantity,
Price = hi.Price,
};
if (product == null)
{
return NotFound();
}
return View(product);
}
[HttpPost]
[ActionName("Details")]
public async Task <IActionResult> ProductDetails(ProductVm pb)
{
List<Spray> sprays = new List<Spray>();
//if (id == null)
//{
// return NotFound();
//}
//var yes = _db.Spray.Include(c => c.ProductTypes).FirstOrDefault(c => c.Id == id);
ProductVm product = new ProductVm()
{
Name = pb.Name,
Id = pb.Id,
Image = pb.Image,
Image1=pb.Image1,
Quantity = pb.Quantity,
Price = pb.Price,
};
if (product == null)
{
return NotFound();
}
sprays = HttpContext.Session.Get<List<Spray>>("sprays");
if (sprays == null)
{
sprays = new List<Spray>();
}
sprays.Add(product);
HttpContext.Session.Set("sprays", sprays);
return RedirectToAction(nameof(Index));
}
[HttpGet]
public IActionResult Cart()
{
List<Spray> sprays = HttpContext.Session.Get<List<Spray>>("sprays");
if (sprays == null)
{
sprays = new List<Spray>();
}
return View(sprays);
}
@model List<Spray>
@{
ViewData["Title"] = "Cart";
}
<div>
<div class="row">
<div class="col-6">
<table class="table table-bordered">
<thead>
<tr>
<th>Image</th>
<th>Name</th>
<th>Quantity</th>
<th>Price</th>
<th>Quantity Update</th>
<th>Total</th>
<th></th>
</tr>
</thead>
<tbody>
@foreach (var item in Model)
{
<tr>
<td>
<img src="~/@item.Image" width="200px" height="150px" />
</td>
<td>@item.Name</td>
<td>@item.Quantity</td>
<td>@item.Price</td>
<td>
<input type="number" asp-for="@item.Quantity" min="0" max="1000" />
</td>
<td>@(item.Price * item.Quantity)</td>
<td>
<a asp-area="Customer" asp-action="Remove" asp-controller="LaptopShow" asp-route-id="@item.Id" class="btn btn-danger">
<i class="fas fa-trash"></i>
</a>
</td>
</tr>
}
</tbody>
</table>
</div>
<div class="col-6">
<div class="text-right">
<h3>Total Amount</h3>
<h3>Grand Total : @Model.Sum(c => c.Price * c.Quantity)</h3>
<a asp-area="Customer" asp-action="Checkout" asp-controller="Order" class="btn btn-info">Process To CheckOut</a>
</div>
</div>
<div>
<a asp-action="Index" asp-controller="SprayShow" class="btn btn-primary">Back To Home</a>
</div>
</div>
</div>
@*<div>
@Html.ActionLink("Edit", "Edit", new { /* id = Model.PrimaryKey */ }) |
<a asp-action="Index">Back to List</a>
</div>*@
<script src="~/lib/jquery/dist/jquery.min.js"></script>
<script>
$(function () {
$("input[name='item.Quantity']").change(function () {
//get the new quantity
var newquantity = parseInt($(this).val());
//update the original quantity value
$(this).closest("tr").find("td")[2].innerHTML = newquantity;
//get the price
var price = parseFloat($(this).closest("tr").find("td")[3].innerHTML);
//calculate the total
$(this).closest("tr").find("td")[5].innerHTML = newquantity * price;
//calcule the Grand Total
var grandtotal = 0;
$("tbody").find("tr").each(function (index, item) {
var value = parseFloat($(item).find("td")[5].innerHTML);
grandtotal += value;
});
$(".text-right h3:last").html("Grand Total : " + grandtotal.toString());
});
});
</script>
上面的代碼，我改變了數量的增加和減少來計算。但是這個更新值 session 數據無法選擇。 為此，我在這里發現了一個問題來處理結帳問題。 我找不到更新 cart.cshtml 的實際數量數據。 這里我的 output 使用 jquery 更新了數量
using System;
using System.Collections.Generic;
using System.Linq;
using System.Threading.Tasks;
using HuddsonBay.Data;
using HuddsonBay.Models;
using HuddsonBay.Utility;
using Microsoft.AspNetCore.Mvc;
namespace HuddsonBay.Areas.Customer.Controllers
{
[Area("Customer")]
public class OrderController : Controller
{
private ApplicationDbContext _db;
public OrderController(ApplicationDbContext db)
{
_db = db;
}
[HttpGet]
public IActionResult Checkout()
{
return View();
}
[HttpPost]
[ValidateAntiForgeryToken]
public async Task<IActionResult> Checkout(Order anOrder)
{
//session theke data peck
List<Spray> sprays = HttpContext.Session.Get<List<Spray>>("sprays");
if (sprays != null)
{
for each (var mobile in sprays)
{
OrderDetails orderDetails1 = new OrderDetails();
orderDetails1.ProductId = mobile.Id;
anOrder.OrderDetails.Add(orderDetails1);
}
}
anOrder.OrderNo = GetOrderNo();
_db.Orders.Add(anOrder);
await _db.SaveChangesAsync();
HttpContext.Session.Set("sprays", new List<Spray>());
return RedirectToAction(nameof(Checkout));
}
public String GetOrderNo() //for count order number
{
int rowCount = _db.Orders.ToList().Count() + 1;
return rowCount.ToString("000");
}
}
}
上面的視圖，項目列表 session 數據無法選擇我更新的數量。 我是如何解決這個問題的。 我按照數量的價值順序面臨問題。 我是初學者，請任何人幫助。
1 個解決方案
解決方案1
1 已采納 2020-08-06 06:57:48
這是一個演示如何使用ajax將List傳遞給controller：
噴：
public class Spray
{
public int Id { get; set; }
public string Image { get; set; }
public string Name { get; set; }
public int Quantity { get; set; }
public int Price { get; set; }
public int Total { get; set; }
}
控制器：
[HttpGet]
public IActionResult Cart()
{
List < Spray > sprays= new List<Spray> { new Spray { Id = 1, Name = "product1", Price = 10, Quantity = 1, Total = 1,Image="image1.png" }, new Spray { Id = 2, Name = "product2", Price = 20, Quantity = 1, Total = 20,Image="Image2.png" } };
return View(sprays);
}
[HttpPost]
[ValidateAntiForgeryToken]
public async Task<IActionResult> SendSprays([FromBody]IList<Spray> t) {
return RedirectToAction(nameof(Cart));
}
購物車.cshtml：
<div>
<div class="row">
<div class="col-6">
<table class="table table-bordered" id="myTable">
<thead>
<tr>
<th>Image</th>
<th>Name</th>
<th>Quantity</th>
<th>Price</th>
<th>Quantity Update</th>
<th>Total</th>
<th></th>
<th hidden>Id</th>
<th hidden>ImageValue</th>
</tr>
</thead>
<tbody>
@foreach (var item in Model)
{
<tr>
<td>
<img src="~/@item.Image" width="200px" height="150px" />
</td>
<td>@item.Name</td>
<td>@item.Quantity</td>
<td>@item.Price</td>
<td>
<input type="number" asp-for="@item.Quantity" min="0" max="1000" />
</td>
<td>@(item.Price * item.Quantity)</td>
<td>
<a asp-area="Customer" asp-action="Remove" asp-controller="LaptopShow" asp-route-id="@item.Id" class="btn btn-danger">
<i class="fas fa-trash"></i>
</a>
</td>
<td hidden>@item.Id</td>
<td hidden>@item.Image</td>
</tr>
}
</tbody>
</table>
</div>
<div class="col-6">
<div class="text-right">
<h3>Total Amount</h3>
<h3>Grand Total : @Model.Sum(c => c.Price * c.Quantity)</h3>
<button onclick="checkout()">Process To CheckOut</button>
@*<a asp-action="Checkout" asp-controller="Test" class="btn btn-info">Process To CheckOut</a>*@
</div>
</div>
<div>
<a asp-action="Index" asp-controller="SprayShow" class="btn btn-primary">Back To Home</a>
</div>
</div>
</div>
@*<div>
@Html.ActionLink("Edit", "Edit", new { /* id = Model.PrimaryKey */ }) |
<a asp-action="Index">Back to List</a>
</div>*@
<script src="~/lib/jquery/dist/jquery.min.js"></script>
<script>
$(function () {
$("input[name='item.Quantity']").change(function () {
//get the new quantity
var newquantity = parseInt($(this).val());
//update the original quantity value
$(this).closest("tr").find("td")[2].innerHTML = newquantity;
//get the price
var price = parseFloat($(this).closest("tr").find("td")[3].innerHTML);
//calculate the total
$(this).closest("tr").find("td")[5].innerHTML = newquantity * price;
//calcule the Grand Total
var grandtotal = 0;
$("tbody").find("tr").each(function (index, item) {
var value = parseFloat($(item).find("td")[5].innerHTML);
grandtotal += value;
});
$(".text-right h3:last").html("Grand Total : " + grandtotal.toString());
});
});
function checkout() {
var oTable = document.getElementById('myTable');
//gets rows of table
var rowLength = oTable.rows.length;
var sprays = new Array();
//loops through rows
for (i = 1; i < rowLength; i++) {
var tempspray = {};
//gets cells of current row
var oCells = oTable.rows.item(i).cells;
//gets amount of cells of current row
var cellLength = oCells.length;
//tempspray.image = oCells.item(j).
tempspray.Name = oCells.item(1).innerHTML;
tempspray.Quantity = parseInt(oCells.item(2).innerHTML);
tempspray.Price = parseInt(oCells.item(3).innerHTML);
tempspray.Total = parseInt(oCells.item(5).innerHTML);
tempspray.Id = parseInt(oCells.item(7).innerHTML);
tempspray.Image = oCells.item(8).innerHTML;
sprays.push(tempspray);
}
var token = $('input[name="__RequestVerificationToken"]').val();
var t = JSON.stringify(sprays);
$.ajax({
type: "POST",
url: '@(Url.Action("SendSprays", "Test"))',
headers: { "RequestVerificationToken": $('input[name="__RequestVerificationToken"]').val() },
data: t,
contentType: "application/json; charset=utf-8"
});
}
</script>
結果：
如何獲取從服務獲取的ViewModel列表中的數據，然后更新View？
[英]How to get data to ViewModel list that is acquired from a service and then update the View?
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