Let blog example use object dispatcher

Author: dahlia

examples/blog/federation/mod.ts

@@ -25,7 +25,7 @@ import {
   getFollowers,
   removeFollower,
 } from "../models/follower.ts";
-import { countPosts, getPosts, toArticle } from "../models/post.ts";
+import { countPosts, getPost, getPosts, toArticle } from "../models/post.ts";
 import { openKv } from "../models/kv.ts";
 import { getLogger } from "@logtape/logtape";
 
@@ -91,6 +91,21 @@ federation.setActorDispatcher("/users/{handle}", async (ctx, handle, key) => {
     };
   });
 
+// Registers the object dispatcher, which is responsible for creating an
+// `Article` object for a given post UUID:
+federation.setObjectDispatcher(
+  Article,
+  "/posts/{uuid}",
+  async (ctx, { uuid }) => {
+    const blog = await getBlog();
+    if (blog == null) return null;
+    const post = await getPost(uuid);
+    if (post == null) return null;
+    const comments = await getComments(post.uuid);
+    return toArticle(ctx, blog, post, comments);
+  },
+);
+
 // Registers the outbox dispatcher, which is responsible for listing
 // activities in the outbox:
 federation.setOutboxDispatcher(

examples/blog/routes/posts/[uuid].tsx

@@ -24,17 +24,12 @@ export interface PostPageData {
   followers: bigint;
 }
 
-export const handler: Handler<PostPageData> = async (req, ctx) => {
+export const handler: Handler<PostPageData> = async (_req, ctx) => {
   const blog = await getBlog();
   if (blog == null) return await ctx.renderNotFound();
   const post = await getPost(ctx.params.uuid);
   if (post == null) return await ctx.renderNotFound();
   const comments = await getComments(post.uuid);
-  const fedCtx = federation.createContext(req);
-  const article = toArticle(fedCtx, blog, post, comments);
-  const response = await respondWithObjectIfAcceptable(article, req, fedCtx);
-  if (response != null) return response;
-
   const followers = await countFollowers();
   const data: PostPageData = {
     blog,