{
  "schema": {
    "bsonType": "object",
    "required": [],
    "permission": {
      "read": "doc.user_id == auth.uid",
      "create": false,
      "update": false,
      "delete": "doc.user_id == auth.uid"
    },
    "properties": {
      "_id": {
        "description": "ID，系统自动生成"
      },
      "user_id": {
        "description": "当前用户的id",
        "foreignKey": "uni-id-users._id",
        "forceDefaultValue": {
          "$env": "uid"
        }
      },
      "friend_uid": {
        "description": "好友的用户id",
        "foreignKey": "uni-id-users._id",
        "enum": {
          "collection": "uni-id-users",
          "field": "_id as value,username as text"
        }
      },
      "mark": {
        "description": "标记备注"
      },
      "class_name": {
        "description": "分组名称"
      },
      "create_time": {
        "bsonType": "timestamp",
        "forceDefaultValue": {
          "$env": "now"
        }
      }
    }
  },
  "index": []
}