修复知识库的标签管理和分类管理

server/controllers/knowledge.go

@@ -290,12 +290,13 @@ func (c *KnowledgeController) GetTags() {
 	var result []map[string]interface{}
 	for _, tag := range tags {
 		result = append(result, map[string]interface{}{
-			"tagId":      tag.TagId,
-			"tagName":    tag.TagName,
-			"tagColor":   tag.TagColor,
-			"usageCount": tag.UsageCount,
-			"createTime": tag.CreateTime,
-			"updateTime": tag.UpdateTime,
+			"tagId":         tag.TagId,
+			"tagName":       tag.TagName,
+			"tagColor":      tag.TagColor,
+			"tagBackground": tag.TagBackground,
+			"usageCount":    tag.UsageCount,
+			"createTime":    tag.CreateTime,
+			"updateTime":    tag.UpdateTime,
 		})
 	}
 
@@ -322,7 +323,8 @@ func (c *KnowledgeController) AddCategory() {
 		return
 	}
 
-	id, err := models.AddCategory(&category)
+	// 不处理id，直接添加，表自动递增
+	_, err = models.AddCategory(&category)
 	if err != nil {
 		c.Data["json"] = map[string]interface{}{
 			"code":    1,
@@ -336,12 +338,12 @@ func (c *KnowledgeController) AddCategory() {
 	c.Data["json"] = map[string]interface{}{
 		"code":    0,
 		"message": "添加成功",
-		"data":    map[string]interface{}{"categoryId": id},
+		"data":    nil,
 	}
 	c.ServeJSON()
 }
 
-// AddTag 添加标签
+// AddTag 添加或更新标签
 // @router /api/knowledge/tag/add [post]
 func (c *KnowledgeController) AddTag() {
 	var tag models.KnowledgeTag
@@ -356,6 +358,31 @@ func (c *KnowledgeController) AddTag() {
 		return
 	}
 
+	// 判断是添加还是更新
+	if tag.TagId > 0 {
+		// 更新操作
+		err = models.UpdateTag(&tag)
+		if err != nil {
+			c.Data["json"] = map[string]interface{}{
+				"code":    1,
+				"message": "更新标签失败: " + err.Error(),
+				"data":    nil,
+			}
+			c.ServeJSON()
+			return
+		}
+
+		c.Data["json"] = map[string]interface{}{
+			"code":    0,
+			"message": "更新成功",
+			"data":    map[string]interface{}{"tagId": tag.TagId},
+		}
+		c.ServeJSON()
+		return
+	}
+
+	// 添加操作：确保 TagId 为 0，让数据库自动生成
+	tag.TagId = 0
 	id, err := models.AddTag(&tag)
 	if err != nil {
 		c.Data["json"] = map[string]interface{}{