数据结构优化

client/src/components/admin/PostRelationModal.vue

@@ -65,11 +65,13 @@
               class="admin-input text-sm"
               @keyup.enter="createColumn"
             />
-            <input
-              v-model="newColumn.cover"
-              placeholder="封面图片URL"
-              class="admin-input text-sm"
-            />
+            <div>
+              <label class="block text-xs text-art-muted mb-2">封面图片</label>
+              <ImageUpload
+                v-model="newColumn.cover"
+                :categoryId="1"
+              />
+            </div>
             <textarea
               v-model="newColumn.description"
               placeholder="描述"
@@ -144,7 +146,7 @@ import {
   createCategory as createCategoryApi, 
   createColumn as createColumnApi, 
   createTag as createTagApi, 
-  updatePost, 
+  updatePostRelations, 
   Category, 
   Column, 
   Tag, 
@@ -152,6 +154,7 @@ import {
 } from '../../services/api'
 import { useToast } from '../../composables/useToast'
 import CustomSelect from '../CustomSelect.vue'
+import ImageUpload from './ImageUpload.vue'
 
 const props = defineProps<{
   isOpen: boolean
@@ -320,23 +323,13 @@ const save = async () => {
 
   saving.value = true
   try {
-    const payload: any = {
-      title: props.post.title,
+    // 只更新关联关系，不更新内容
+    await updatePostRelations(props.post.id, {
       categoryId: selectedCategoryId.value,
-      date: props.post.date,
-      excerpt: props.post.excerpt || '',
-      content: props.post.content || '',
-      isPublished: props.post.isPublished || 1,
-      tags: selectedTagIds.value.map(id => ({ id }))
-    }
-
-    if (selectedColumnId.value > 0) {
-      payload.columnId = selectedColumnId.value
-    } else {
-      payload.columnId = null
-    }
-
-    await updatePost(props.post.id, payload)
+      columnId: selectedColumnId.value > 0 ? selectedColumnId.value : null,
+      tagIds: selectedTagIds.value
+    })
+    
     toast.showToast('保存成功', 'success')
     emit('saved')
     close()