c# – 如何在NopCommerce中实现动作过滤器
作者：互联网
我想从CheckoutController更改OpcSaveBilling操作的一些代码中的一些代码.我不想改变NopCommerce的核心代码,所以我需要尝试使用我自己的自定义代码覆盖代码.
我已经读过这篇文章让我开始http://www.pronopcommerce.com/overriding-intercepting-nopcommerce-controllers-and-actions.从我读过的文章中你可以在执行一个动作之前和一个动作执行之后执行你自己的代码.但我没有得到的是文章开放的部分(需要执行的实际代码).
我基本上想要的是原始代码的相同功能,但有一些自定义调整.我在OnePageCheckout视图中添加了一个复选框,根据该复选框,它需要在结帐时跳过输入送货地址部分. (使用送货地址的帐单邮寄地址)
我已经在核心代码和这项工作中添加了代码并跳过了这一步(注意：我知道我仍然需要手动添加帐单地址作为送货地址)但是就像我说我不想改变代码NopCommerce的核心,但覆盖它.
如果我的问题不可理解,您需要更多代码或解释,我很乐意提供更多.如果我这样做的方式不适合我想要的,如果你告诉我,我将不胜感激！
我的代码：
Action Filter类：
using Nop.Web.Controllers;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Web.Mvc;
namespace Nop.Plugin.Misc.MyProject.ActionFilters
{
class ShippingAddressOverideActionFilter : ActionFilterAttribute, IFilterProvider
{
public IEnumerable<Filter> GetFilters(ControllerContext controllerContext, ActionDescriptor actionDescriptor)
{
if (controllerContext.Controller is CheckoutController && actionDescriptor.ActionName.Equals("OpcSaveBilling", StringComparison.InvariantCultureIgnoreCase))
{
return new List<Filter>() { new Filter(this, FilterScope.Action, 0) };
}
return new List<Filter>();
}
public override void OnActionExecuting(ActionExecutingContext filterContext)
{
// What do I put in here? So that I have the code of the core action but with my custom tweaks in it
}
}
}
在同一个Nop插件中的DependencyRegistar中注册了该类
builder.RegisterType<ShippingAddressOverideActionFilter>().As<System.Web.Mvc.IFilterProvider>();
一个包含自定义代码的工作示例.但这是核心行动.
public ActionResult OpcSaveBilling(FormCollection form)
{
try
{
//validation
var cart = _workContext.CurrentCustomer.ShoppingCartItems
.Where(sci => sci.ShoppingCartType == ShoppingCartType.ShoppingCart)
.Where(sci => sci.StoreId == _storeContext.CurrentStore.Id)
.ToList();
if (cart.Count == 0)
throw new Exception("Your cart is empty");
if (!UseOnePageCheckout())
throw new Exception("One page checkout is disabled");
if ((_workContext.CurrentCustomer.IsGuest() && !_orderSettings.AnonymousCheckoutAllowed))
throw new Exception("Anonymous checkout is not allowed");
int billingAddressId = 0;
int.TryParse(form["billing_address_id"], out billingAddressId);
if (billingAddressId > 0)
{
//existing address
var address = _workContext.CurrentCustomer.Addresses.FirstOrDefault(a => a.Id == billingAddressId);
if (address == null)
throw new Exception("Address can't be loaded");
_workContext.CurrentCustomer.BillingAddress = address;
_customerService.UpdateCustomer(_workContext.CurrentCustomer);
}
else
{
//new address
var model = new CheckoutBillingAddressModel();
TryUpdateModel(model.NewAddress, "BillingNewAddress");
//validate model
TryValidateModel(model.NewAddress);
if (!ModelState.IsValid)
{
//model is not valid. redisplay the form with errors
var billingAddressModel = PrepareBillingAddressModel(selectedCountryId: model.NewAddress.CountryId);
billingAddressModel.NewAddressPreselected = true;
return Json(new
{
update_section = new UpdateSectionJsonModel()
{
name = "billing",
html = this.RenderPartialViewToString("OpcBillingAddress", billingAddressModel)
},
wrong_billing_address = true,
});
}
//try to find an address with the same values (don't duplicate records)
var address = _workContext.CurrentCustomer.Addresses.ToList().FindAddress(
model.NewAddress.FirstName, model.NewAddress.LastName, model.NewAddress.PhoneNumber,
model.NewAddress.Email, model.NewAddress.FaxNumber, model.NewAddress.Company,
model.NewAddress.Address1, model.NewAddress.Address2, model.NewAddress.City,
model.NewAddress.StateProvinceId, model.NewAddress.ZipPostalCode, model.NewAddress.CountryId);
if (address == null)
{
//address is not found. let's create a new one
address = model.NewAddress.ToEntity();
address.CreatedOnUtc = DateTime.UtcNow;
//some validation
if (address.CountryId == 0)
address.CountryId = null;
if (address.StateProvinceId == 0)
address.StateProvinceId = null;
if (address.CountryId.HasValue && address.CountryId.Value > 0)
{
address.Country = _countryService.GetCountryById(address.CountryId.Value);
}
_workContext.CurrentCustomer.Addresses.Add(address);
}
_workContext.CurrentCustomer.BillingAddress = address;
_customerService.UpdateCustomer(_workContext.CurrentCustomer);
}
// Get value of checkbox from the one page checkout view
var useSameAddress = false;
Boolean.TryParse(form["billing-address-same"], out useSameAddress);
// If it is checked copy the billing address to shipping address and skip the shipping address part of the checkout
if (useSameAddress)
{
var shippingMethodModel = PrepareShippingMethodModel(cart);
return Json(new
{
update_section = new UpdateSectionJsonModel()
{
name = "shipping-method",
html = this.RenderPartialViewToString("OpcShippingMethods", shippingMethodModel)
},
goto_section = "shipping_method"
});
}
// If it isn't checked go to the enter shipping address part of the checkout
else
{
if (cart.RequiresShipping())
{
//shipping is required
var shippingAddressModel = PrepareShippingAddressModel(prePopulateNewAddressWithCustomerFields: true);
return Json(new
{
update_section = new UpdateSectionJsonModel()
{
name = "shipping",
html = this.RenderPartialViewToString("OpcShippingAddress", shippingAddressModel)
},
goto_section = "shipping"
});
}
else
{
//shipping is not required
_genericAttributeService.SaveAttribute<ShippingOption>(_workContext.CurrentCustomer, SystemCustomerAttributeNames.SelectedShippingOption, null, _storeContext.CurrentStore.Id);
//load next step
return OpcLoadStepAfterShippingMethod(cart);
}
}
}
catch (Exception exc)
{
_logger.Warning(exc.Message, exc, _workContext.CurrentCustomer);
return Json(new { error = 1, message = exc.Message });
}
}
解决方法:
没人能告诉你OnActionExecuting需要放什么,因为你可以做很多事情.
public override void OnActionExecuting(ActionExecutingContext filterContext)
{
// What do I put in here? So that I have the code of the core action but with my custom tweaks in it
}
经验法则？编写任何代码,例如如何编写Action.唯一的调整是,而不是返回ActionResult,你应该设置filterContext.Result(你不能返回任何东西,因为这是一个void方法).
例如,在执行您要覆盖的操作之前,设置以下内容将重定向到主页.
filterContext.Result = new RedirectToRouteResult("HomePage", null);
请记住这是OnActionExecuting,因此这将在您覆盖的Action之前执行.如果您将其重定向到另一个页面,它将不会调用您重写的Action.
标签：c,asp-net-mvc,action-filter,nopcommerce 来源： https://codeday.me/bug/20190609/1207533.html