added comments

backend/internal/model/blog.go

@@ -4,6 +4,7 @@ import (
 	"gorm.io/gorm"
 )
 
+// Post represents a blog post with associated comments and user ID.
 type Post struct {
 	gorm.Model
 	ID       uint   `gorm:"primarykey" json:"id"`
@@ -13,6 +14,8 @@ type Post struct {
 	Comments []Comment
 	UserID   uint `gorm:"->;<-:create"`
 }
+
+// Comment represents a comment on a post, including its ID, post association, content, and creator.
 type Comment struct {
 	ID      uint
 	PostID  uint