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ASP.NET Core中自动生成小写虚线路由

[英]Automatically generate lowercase dashed routes in ASP.NET Core

ASP.NET Core 默认使用http://localhost:5000/DashboardSettings/Index这样的 CamelCase-Routes。 但我想使用小写路由,由破折号分隔: http://localhost:5000/dashboard-settings/index它们更常见和一致,因为我的应用程序扩展了一个运行 Wordpress 的网站,它也有小写 url破折号。

我了解到我可以使用路由选项将 url 更改为小写:

services.ConfigureRouting(setupAction => {
    setupAction.LowercaseUrls = true;
});

这有效,但给了我没有任何定界符的 url,例如http://localhost:5000/dashboardsettings/index可读性差。 我可以使用 route 属性定义自定义路由

[Route("dashboard-settings")]
class DashboardSettings:Controller {
    public IActionResult Index() {
        // ...
    }
}

但这会导致额外的工作并且容易出错。 我更喜欢搜索大写字符的自动解决方案,在它们之前插入破折号并将大写字符变为小写。 对于旧的 ASP.NET 这不是什么大问题,但是在 ASP.NET Core 上我看不出如何处理这个问题。

在这里做这个的方法是什么? 我需要某种接口,我可以在其中生成 url(例如标签助手)并用破折号分隔符替换 CamelCase。 然后我需要另一种路由接口,以便将破折号分隔符 url 转换回 CamelCase,以便与我的控制器/操作名称正确匹配。

ASP.NET Core 版本更新 >= 2.2

为此,首先创建的SlugifyParameterTransformer类应如下所示:

public class SlugifyParameterTransformer : IOutboundParameterTransformer
{
    public string TransformOutbound(object value)
    {
        // Slugify value
        return value == null ? null : Regex.Replace(value.ToString(), "([a-z])([A-Z])", "$1-$2").ToLower();
    }
}

对于 ASP.NET Core 2.2 MVC:

Startup类的ConfigureServices方法中:

services.AddRouting(option =>
{
    option.ConstraintMap["slugify"] = typeof(SlugifyParameterTransformer);
});

并且路由配置应该如下:

app.UseMvc(routes =>
{
    routes.MapRoute(
       name: "default",
       template: "{controller:slugify}/{action:slugify}/{id?}",
       defaults: new { controller = "Home", action = "Index" });
 });

对于 ASP.NET Core 2.2 Web API:

Startup类的ConfigureServices方法中:

public void ConfigureServices(IServiceCollection services)
{
    services.AddMvc(options => 
    {
        options.Conventions.Add(new RouteTokenTransformerConvention(new SlugifyParameterTransformer()));
    }).SetCompatibilityVersion(CompatibilityVersion.Version_2_2);
}

对于 ASP.NET Core >=3.0 MVC:

Startup类的ConfigureServices方法中:

services.AddRouting(option =>
{
    option.ConstraintMap["slugify"] = typeof(SlugifyParameterTransformer);
});

和路由配置应该如下:

app.UseEndpoints(endpoints =>
{
    endpoints.MapAreaControllerRoute(
        name: "AdminAreaRoute",
        areaName: "Admin",
        pattern: "admin/{controller:slugify=Dashboard}/{action:slugify=Index}/{id:slugify?}");

    endpoints.MapControllerRoute(
        name: "default",
        pattern: "{controller:slugify}/{action:slugify}/{id:slugify?}",
        defaults: new { controller = "Home", action = "Index" });
});

对于 ASP.NET Core >=3.0 Web API:

Startup类的ConfigureServices方法中:

services.AddControllers(options => 
{
    options.Conventions.Add(new RouteTokenTransformerConvention(new SlugifyParameterTransformer()));
});

对于 ASP.NET Core >=3.0 Razor 页面

Startup类的ConfigureServices方法中:

services.AddRazorPages(options => 
{
    options.Conventions.Add(new PageRouteTransformerConvention(new SlugifyParameterTransformer()));
});

这将使/Employee/EmployeeDetails/1路由到/employee/employee-details/1

这里的聚会有点晚了,但是..可以通过实现 IControllerModelConvention 来做到这一点。

 public class DashedRoutingConvention : IControllerModelConvention
 {
        public void Apply(ControllerModel controller)
        {
            var hasRouteAttributes = controller.Selectors.Any(selector =>
                                               selector.AttributeRouteModel != null);
            if (hasRouteAttributes)
            {
                // This controller manually defined some routes, so treat this 
                // as an override and not apply the convention here.
                return;
            }

            foreach (var controllerAction in controller.Actions)
            {
                foreach (var selector in controllerAction.Selectors.Where(x => x.AttributeRouteModel == null))
                {
                    var template = new StringBuilder();

                    if (controllerAction.Controller.ControllerName != "Home")
                    {
                        template.Append(PascalToKebabCase(controller.ControllerName));
                    }

                    if (controllerAction.ActionName != "Index")
                    {
                        template.Append("/" + PascalToKebabCase(controllerAction.ActionName));
                    }

                    selector.AttributeRouteModel = new AttributeRouteModel()
                    {
                        Template = template.ToString()
                    };
                }
            }
        }

        public static string PascalToKebabCase(string value)
        {
            if (string.IsNullOrEmpty(value))
                return value;

            return Regex.Replace(
                value,
                "(?<!^)([A-Z][a-z]|(?<=[a-z])[A-Z])",
                "-$1",
                RegexOptions.Compiled)
                .Trim()
                .ToLower();
        }
}

然后在Startup.cs中注册

public void ConfigureServices(IServiceCollection services)
{
    // Add framework services.
    services.AddMvc(options => options.Conventions.Add(new DashedRoutingConvention()));
}

可以在这里找到更多信息和示例https://docs.microsoft.com/en-us/aspnet/core/mvc/controllers/routing

我正在使用 Asp.NetCore 2.0.0 和 Razor Pages(不需要显式控制器),所以只需要:

  1. 启用小写网址:

    services.AddRouting(options => options.LowercaseUrls = true);

  2. 创建一个名为Dashboard-Settings.cshtml的文件,生成的路由变为/dashboard-settings

复制自 ASP.NET Core 3.0(与 2.2 相同) 文档

public void ConfigureServices(IServiceCollection services)
{
    services.AddMvc(options =>
    {
        options.Conventions.Add(new RouteTokenTransformerConvention(
                                     new SlugifyParameterTransformer()));
    });
}

public class SlugifyParameterTransformer : IOutboundParameterTransformer
{
    public string TransformOutbound(object value)
    {
        if (value == null) { return null; }

        // Slugify value
        return Regex.Replace(value.ToString(), "([a-z])([A-Z])", "$1-$2").ToLower();
    }
}

感谢您提供信息,但是最好过滤选择器,以便跳过那些带有自定义路由模板的选择器:例如[HttpGet("/[controller]/{id}")]

foreach (var selector in controllerAction.Selectors
                                         .Where(x => x.AttributeRouteModel == null))

有关最新的方法,请参阅文档 以下是 ASP.NET Core 7.0 的操作方法:

// IMPORTS
using System.Text.RegularExpressions;

namespace YourApi {
    public class Program {
        public static void Main(string[] args) {
            // replace builder.Services.AddControllers() with the following
            builder.Services.AddControllersWithViews(options => {
                options.Conventions.Add(new RouteTokenTransformerConvention(
                                             new SlugifyParameterTransformer()));
            });
            // EXISTING CODE
        }
    }

    // https://learn.microsoft.com/en-us/aspnet/core/mvc/controllers/routing#use-a-parameter-transformer-to-customize-token-replacement
    public class SlugifyParameterTransformer : IOutboundParameterTransformer {
        public string? TransformOutbound(object? value) {
            if (value == null) { return null; }

            return Regex.Replace(value.ToString(),
                                 "([a-z])([A-Z])",
                                 "$1-$2",
                                 RegexOptions.CultureInvariant,
                                 TimeSpan.FromMilliseconds(100)).ToLowerInvariant();
        }

    }
}

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