Check if page exist before openning it

modules/cms-kit/src/Volo.CmsKit.Domain/Volo/CmsKit/Pages/PageManager.cs

@@ -37,7 +37,7 @@ public class PageManager : DomainService
             CurrentTenant.Id);
     }
 
-    public virtual async Task SetSlugAsync(Page page, string newSlug)
+    public virtual async Task SetSlugAsync(Page page, [NotNull] string newSlug)
     {
         if (page.Slug != newSlug)
         {

modules/cms-kit/src/Volo.CmsKit.Public.Application.Contracts/Volo/CmsKit/Public/Pages/IPagePublicAppService.cs

@@ -8,5 +8,6 @@ namespace Volo.CmsKit.Public.Pages;
 public interface IPagePublicAppService : IApplicationService
 {
     Task<PageDto> FindBySlugAsync([NotNull] string slug);
+    Task<bool> DoesSlugExistAsync([NotNull] string slug);
     Task<PageDto> FindDefaultHomePageAsync();
 }

modules/cms-kit/src/Volo.CmsKit.Public.Application/Volo/CmsKit/Public/Pages/PagePublicAppService.cs

@@ -1,5 +1,6 @@
 using System;
 using System.Threading.Tasks;
+using JetBrains.Annotations;
 using Microsoft.Extensions.Caching.Distributed;
 using Volo.Abp.Caching;
 using Volo.Abp.Features;
@@ -57,4 +58,9 @@ public class PagePublicAppService : CmsKitPublicAppServiceBase, IPagePublicAppSe
 
         return ObjectMapper.Map<PageCacheItem, PageDto>(pageCacheItem);
     }
+
+    public Task<bool> DoesSlugExistAsync([NotNull] string slug)
+    {
+        return PageRepository.ExistsAsync(slug);
+    }
 }

modules/cms-kit/src/Volo.CmsKit.Public.HttpApi.Client/ClientProxies/Volo/CmsKit/Public/Pages/PagesPublicClientProxy.Generated.cs

@@ -30,4 +30,12 @@ public partial class PagesPublicClientProxy : ClientProxyBase<IPagePublicAppServ
     {
         return await RequestAsync<PageDto>(nameof(FindDefaultHomePageAsync));
     }
+
+    public virtual async Task<bool> DoesSlugExistAsync(string slug)
+    {
+        return await RequestAsync<bool>(nameof(DoesSlugExistAsync), new ClientProxyRequestTypeValue
+        {
+            { typeof(string), slug }
+        });
+    }
 }

modules/cms-kit/src/Volo.CmsKit.Public.HttpApi.Client/ClientProxies/cms-kit-generate-proxy.json

@@ -829,6 +829,23 @@
                     "typeSimple": "Volo.CmsKit.Contents.PageDto"
                   }
                 },
+                {
+                  "name": "DoesSlugExistAsync",
+                  "parametersOnMethod": [
+                    {
+                      "name": "slug",
+                      "typeAsString": "System.String, System.Private.CoreLib",
+                      "type": "System.String",
+                      "typeSimple": "string",
+                      "isOptional": false,
+                      "defaultValue": null
+                    }
+                  ],
+                  "returnValue": {
+                    "type": "System.Boolean",
+                    "typeSimple": "boolean"
+                  }
+                },
                 {
                   "name": "FindDefaultHomePageAsync",
                   "parametersOnMethod": [],
@@ -892,6 +909,43 @@
               },
               "allowAnonymous": null,
               "implementFrom": "Volo.CmsKit.Public.Pages.IPagePublicAppService"
+            },
+            "DoesSlugExistAsyncBySlug": {
+              "uniqueName": "DoesSlugExistAsyncBySlug",
+              "name": "DoesSlugExistAsync",
+              "httpMethod": "GET",
+              "url": "api/cms-kit-public/pages/{slug}/exist",
+              "supportedVersions": [],
+              "parametersOnMethod": [
+                {
+                  "name": "slug",
+                  "typeAsString": "System.String, System.Private.CoreLib",
+                  "type": "System.String",
+                  "typeSimple": "string",
+                  "isOptional": false,
+                  "defaultValue": null
+                }
+              ],
+              "parameters": [
+                {
+                  "nameOnMethod": "slug",
+                  "name": "slug",
+                  "jsonName": null,
+                  "type": "System.String",
+                  "typeSimple": "string",
+                  "isOptional": false,
+                  "defaultValue": null,
+                  "constraintTypes": [],
+                  "bindingSourceId": "Path",
+                  "descriptorName": ""
+                }
+              ],
+              "returnValue": {
+                "type": "System.Boolean",
+                "typeSimple": "boolean"
+              },
+              "allowAnonymous": null,
+              "implementFrom": "Volo.CmsKit.Public.Pages.IPagePublicAppService"
             }
           }
         },

modules/cms-kit/src/Volo.CmsKit.Public.HttpApi/Volo/CmsKit/Public/Pages/PagesPublicController.cs

@@ -1,4 +1,5 @@
 using System.Threading.Tasks;
+using JetBrains.Annotations;
 using Microsoft.AspNetCore.Mvc;
 using Volo.Abp;
 using Volo.Abp.Features;
@@ -35,4 +36,11 @@ public class PagesPublicController : CmsKitPublicControllerBase, IPagePublicAppS
     {
         return PageAppService.FindDefaultHomePageAsync();
     }
+
+    [HttpGet]
+    [Route("{slug}/exist")]
+    public Task<bool> DoesSlugExistAsync([NotNull] string slug)
+    {
+        return PageAppService.DoesSlugExistAsync(slug);
+    }
 }

modules/cms-kit/src/Volo.CmsKit.Public.Web/PageRoutingMiddleware.cs

@@ -25,12 +25,12 @@ public class PageRoutingMiddleware : IMiddleware, ITransientDependency
 
             var pagePublicAppService = context.RequestServices.GetRequiredService<IPagePublicAppService>();
 
-            var page = await pagePublicAppService.FindBySlugAsync(
-                context.Request.Path.ToString().TrimStart('/'));
+            var slug = context.Request.Path.ToString().TrimStart('/');
+            var exist = await pagePublicAppService.DoesSlugExistAsync(slug);
 
-            if (page is not null)
+            if (exist)
             {
-                context.Request.Path = $"/pages/{page.Slug}";
+                context.Request.Path = $"/pages/{slug}";
 
                 await next(context);
             }