{
  "summary": [
    {
      "name": "sys_message",
      "title": "站内消息(F15)",
      "pk": [
        "id"
      ],
      "charset": "utf8mb4",
      "collate": "utf8mb4_unicode_ci"
    }
  ],
  "fields": [
    {
      "name": "id",
      "title": "主键",
      "type": "varchar",
      "length": 32,
      "notnull": true
    },
    {
      "name": "receiver_id",
      "title": "接收人",
      "type": "varchar",
      "length": 32
    },
    {
      "name": "msg_type",
      "title": "消息类型(todo/approval/remind/care/notice)",
      "type": "varchar",
      "length": 16
    },
    {
      "name": "title",
      "title": "标题",
      "type": "varchar",
      "length": 256
    },
    {
      "name": "content",
      "title": "内容",
      "type": "text"
    },
    {
      "name": "biz_type",
      "title": "业务类型",
      "type": "varchar",
      "length": 32
    },
    {
      "name": "biz_id",
      "title": "业务ID",
      "type": "varchar",
      "length": 32
    },
    {
      "name": "send_channel",
      "title": "发送渠道(字典MSG_CHANNEL,一期仅site;D9)",
      "type": "varchar",
      "length": 16,
      "default": "site"
    },
    {
      "name": "is_read",
      "title": "是否已读(0/1)",
      "type": "int",
      "default": 0
    },
    {
      "name": "created_at",
      "title": "创建时间",
      "type": "timestamp"
    }
  ],
  "indexes": [
    {
      "name": "idx_receiver_read",
      "fields": [
        "receiver_id",
        "is_read"
      ]
    },
    {
      "name": "idx_created_at",
      "fields": [
        "created_at"
      ]
    }
  ],
  "codes": [
    {
      "name": "send_channel",
      "source": "appcodes",
      "code": "MSG_CHANNEL"
    }
  ]
}