Merge pull request #430 from nagisa77/codex/add-server-side-rendering-for-index.vue

Enable SSR initial render for home and post pages

frontend_nuxt/pages/index.vue

@@ -107,7 +107,7 @@
 </template>
 
 <script>
-import { ref, onMounted, watch } from 'vue'
+import { ref, watch } from 'vue'
 import { useRoute } from 'vue-router'
 import { useScrollLoadMore } from '~/utils/loadMore'
 import { stripMarkdown } from '~/utils/markdown'
@@ -131,7 +131,7 @@ export default {
     SearchDropdown,
     ClientOnly: () => import('vue').then(m => m.defineAsyncComponent(() => import('vue').then(() => ({ template: '<slot />' }))))
   },
-  setup() {
+  async setup() {
     const route = useRoute()
 
     /**
@@ -170,14 +170,11 @@ export default {
     const allLoaded = ref(false)
 
     /**
-     * -------- 2. CLIENT‑SIDE ONLY: LDRS REGISTER --------
-     * 这里使用动态 import 避免 SSR 阶段触发 HTMLElement 未定义错误。
+     * -------- 2. INIT FETCH FOR SSR --------
+     * 服务端渲染阶段也需要获取首页内容和选项。
      */
-    onMounted(async () => {
-      // 首次加载
-      fetchContent()
-      await loadOptions()
-    })
+    await loadOptions()
+    await fetchContent()
 
     /**
      * -------- 3. FETCH OPTION HELPERS --------

frontend_nuxt/pages/posts/[id].vue

@@ -126,7 +126,7 @@ import Dropdown from '../components/Dropdown.vue'
 export default {
   name: 'PostPageView',
   components: { CommentItem, CommentEditor, BaseTimeline, ArticleTags, ArticleCategory, ReactionsGroup, DropdownMenu, VueEasyLightbox, Dropdown },
-  setup() {
+  async setup() {
     const route = useRoute()
     const postId = route.params.id
     const router = useRouter()
@@ -150,27 +150,35 @@ export default {
     const commentSort = ref('NEWEST')
     const isFetchingComments = ref(false)
 
-    // record default metadata from the main document
-    const defaultTitle = document.title
-    const metaDescriptionEl = document.querySelector('meta[name="description"]')
-    const defaultDescription = metaDescriptionEl ? metaDescriptionEl.getAttribute('content') : ''
-    const headerHeight = parseFloat(getComputedStyle(document.documentElement).getPropertyValue('--header-height')) || 0
+    // record default metadata from the main document (client only)
+    const defaultTitle = process.client ? document.title : ''
+    const metaDescriptionEl = process.client
+      ? document.querySelector('meta[name="description"]')
+      : null
+    const defaultDescription = process.client && metaDescriptionEl
+      ? metaDescriptionEl.getAttribute('content')
+      : ''
+    const headerHeight = process.client
+      ? parseFloat(getComputedStyle(document.documentElement).getPropertyValue('--header-height')) || 0
+      : 0
 
-    watch(title, t => {
-      document.title = `OpenIsle - ${t}`
-    })
+    if (process.client) {
+      watch(title, t => {
+        document.title = `OpenIsle - ${t}`
+      })
 
-    watch(postContent, c => {
-      if (metaDescriptionEl) {
-        metaDescriptionEl.setAttribute('content', stripMarkdownLength(c, 400))
-      }
-    })
+      watch(postContent, c => {
+        if (metaDescriptionEl) {
+          metaDescriptionEl.setAttribute('content', stripMarkdownLength(c, 400))
+        }
+      })
 
-    onBeforeUnmount(() => {
-      document.title = defaultTitle
-      if (metaDescriptionEl) metaDescriptionEl.setAttribute('content', defaultDescription)
-      window.removeEventListener('scroll', updateCurrentIndex)
-    })
+      onBeforeUnmount(() => {
+        document.title = defaultTitle
+        if (metaDescriptionEl) metaDescriptionEl.setAttribute('content', defaultDescription)
+        window.removeEventListener('scroll', updateCurrentIndex)
+      })
+    }
       
     const lightboxVisible = ref(false)
     const lightboxIndex = ref(0)
@@ -294,7 +302,7 @@ export default {
         })
         isWaitingFetchingPost.value = false;
         if (!res.ok) {
-          if (res.status === 404) {
+          if (res.status === 404 && process.client) {
             router.replace('/404')
           }
           return
@@ -581,10 +589,11 @@ export default {
       router.push(`/users/${author.value.id}`)
     }
 
+    await fetchPost()
+
     onMounted(async () => {
       const hash = location.hash
       const id = hash.startsWith('#comment-') ? hash.substring('#comment-'.length) : null
-      await fetchPost()
       if (id) expandCommentPath(id)
       updateCurrentIndex()
       window.addEventListener('scroll', updateCurrentIndex)