评论变为ajax加载 和提交

handlers/backend/comment.go

@@ -2,6 +2,7 @@ package backend
 
 import (
 	"net/http"
+	"strconv"
 
 	"goblog/database"
 	"goblog/models"
@@ -10,43 +11,72 @@ import (
 	"gorm.io/gorm"
 )
 
-// 创建评论请求
-type CreateCommentRequest struct {
-	PostID   uint   `json:"post_id" binding:"required"`
-	ParentID *uint  `json:"parent_id"`
-	Author   string `json:"author" binding:"required"`
-	Email    string `json:"email" binding:"required,email"`
-	Website  string `json:"website"`
-	Content  string `json:"content" binding:"required"`
-}
-
 // 获取评论列表
 func GetComments(c *gin.Context) {
 	postID := c.Query("post_id")
+	postSlug := c.Query("post_slug") // 前台使用 slug
 	status := c.Query("status")
+	pageStr := c.DefaultQuery("page", "1")
+	pageSizeStr := c.DefaultQuery("page_size", "10")
+
+	// 解析分页参数
+	page := 1
+	pageSize := 10
+	if p, err := strconv.Atoi(pageStr); err == nil && p > 0 {
+		page = p
+	}
+	if ps, err := strconv.Atoi(pageSizeStr); err == nil && ps > 0 && ps <= 100 {
+		pageSize = ps
+	}
 
 	db := database.DB.Model(&models.Comment{}).Preload("User").
 		Preload("Post", func(db *gorm.DB) *gorm.DB {
 			return db.Select("id", "title", "slug")
 		})
 
-	// 非管理员只能查看自己文章上的评论
+	// 非管理员只能查看自己文章上的评论（后台）或已审核的评论（前台）
 	if !isAdmin(c) {
+		// 前台访问：只显示已审核的评论
+		db = db.Where("status = ?", "approved")
 		if userID, exists := c.Get("userID"); exists {
-			db = db.Where("post_id IN (?)",
-				database.DB.Model(&models.Post{}).Select("id").Where("author_id = ?", userID))
+			// 如果是后台接口调用，限制为自己的文章
+			if postID == "" && postSlug == "" {
+				db = db.Where("post_id IN (?)",
+					database.DB.Model(&models.Post{}).Select("id").Where("author_id = ?", userID))
+			}
+		}
+	} else {
+		// 管理员可以查看所有状态的评论（通过 status 参数过滤）
+		if status != "" {
+			db = db.Where("status = ?", status)
 		}
 	}
 
+	// 按文章 ID 或 slug 过滤
 	if postID != "" {
 		db = db.Where("post_id = ?", postID)
-	}
-	if status != "" {
-		db = db.Where("status = ?", status)
+	} else if postSlug != "" {
+		var post models.Post
+		if err := database.DB.Where("slug = ?", postSlug).First(&post).Error; err != nil {
+			c.JSON(http.StatusNotFound, gin.H{"error": "文章不存在"})
+			return
+		}
+		db = db.Where("post_id = ?", post.ID)
 	}
 
+	// 统计总数
+	var total int64
+	db.Count(&total)
+
+	// 只查询顶级评论（parent_id IS NULL），子评论在 Preload 中加载
 	var comments []models.Comment
-	db.Order("created_at DESC").Find(&comments)
+	offset := (page - 1) * pageSize
+	db.Where("parent_id IS NULL").Order("created_at ASC").Offset(offset).Limit(pageSize).Find(&comments)
+
+	// 预加载子评论
+	for i := range comments {
+		database.DB.Model(&comments[i]).Association("Children").Find(&comments[i].Children)
+	}
 
 	// Comment.Post 在 JSON 中被隐藏，额外附加文章标题和别名供前端展示
 	type commentWithPost struct {
@@ -59,48 +89,17 @@ func GetComments(c *gin.Context) {
 		list = append(list, commentWithPost{cm, cm.Post.Title, cm.Post.Slug})
 	}
 
-	c.JSON(http.StatusOK, gin.H{"data": list})
-}
-
-// 创建评论
-func CreateComment(c *gin.Context) {
-	var req CreateCommentRequest
-	if err := c.ShouldBindJSON(&req); err != nil {
-		c.JSON(http.StatusBadRequest, gin.H{"error": err.Error()})
-		return
+	totalPages := int((total + int64(pageSize) - 1) / int64(pageSize))
+	if totalPages < 1 {
+		totalPages = 1
 	}
 
-	// 检查文章是否存在
-	var post models.Post
-	if err := database.DB.First(&post, req.PostID).Error; err != nil {
-		c.JSON(http.StatusNotFound, gin.H{"error": "文章不存在"})
-		return
-	}
-
-	comment := models.Comment{
-		PostID:   req.PostID,
-		ParentID: req.ParentID,
-		Author:   req.Author,
-		Email:    req.Email,
-		Website:  req.Website,
-		Content:  req.Content,
-		IP:       c.ClientIP(),
-		Status:   "pending", // 默认待审核
-	}
-
-	// 如果用户已登录
-	if userID, exists := c.Get("userID"); exists {
-		uid := userID.(uint)
-		comment.UserID = &uid
-		comment.Status = "approved" // 登录用户评论自动通过
-	}
-
-	if err := database.DB.Create(&comment).Error; err != nil {
-		c.JSON(http.StatusInternalServerError, gin.H{"error": "发表评论失败"})
-		return
-	}
-
-	c.JSON(http.StatusCreated, gin.H{"data": comment})
+	c.JSON(http.StatusOK, gin.H{
+		"data":        list,
+		"page":        page,
+		"total_pages": totalPages,
+		"total":       total,
+	})
 }
 
 // loadAndVerifyComment 加载评论并校验权限，成功返回评论，失败直接写响应并返回 nil