{
  "schema": {
    "bsonType": "object",
    "required": ["name"],
	"permission": {
	  ".read": true, 
	  ".create": false, 
	  ".update": false,
	  ".delete": false
	},
    "properties": {
      "_id": {
        "description": "存储文档 ID（文章 ID），系统自动生成"
      },
      "parent_id": {
        "bsonType": "string",
        "description": "父ID，用于多级分类"
      },
      "name": {
        "bsonType": "string",
        "description": "类别名称",
        "title":"类别名称"
      },
      "icon": {
        "bsonType": "string",
        "description": "类别图标/图片地址",
        "title":"图标地址",
        "pattern": "^(http://|https://|/|./|@/)\\S"
      },
      "sort": {
        "bsonType": "int",
        "description": "类别排序，越大越靠后",
        "title":"排序"
      },
      "description": {
        "bsonType": "string",
        "description": "类别描述",
        "title":"类别描述"
      },
      "create_date": {
        "bsonType": "timestamp",
        "description": "创建时间",
        "defaultValue": {
          "$env": "now"
        }
      }
    }
  },
  "data": [],
  "index": []
}