{
	"bsonType": "object",
	"required": ["user_id", "vote_id"],
	"permission": {
		"read": "doc.user_id == auth.uid || 'admin' in auth.role",
		"create": false,
		"update": false,
		"delete": false
	},
	"properties": {
		"_id": {
			"description": "ID，系统自动生成"
		},
		"user_id": {
			"bsonType": "string",
			"description": "投票用户ID",
			"foreignKey": "uni-id-users._id",
			"forceDefaultValue": {
				"$env": "uid"
			}
		},
		"vote_id": {
			"bsonType": "string",
			"description": "投票主题ID"
		},
		"selectValue": {
			"description": "所选选项：单选存字符串，多选存字符串数组",
			"bsonType": ["string", "array"]
		},
		"type": {
			"bsonType": "string",
			"description": "投票类型文案，如 单选（默认) / 多选，无限制 / 多选， 最多两项"
		},
		"create_time": {
			"bsonType": "timestamp",
			"description": "投票时间",
			"defaultValue": {
				"$env": "now"
			}
		}
	},
	"indexes": [
		{
			"IndexName": "user_vote_unique",
			"MgoKeySchema": {
				"MgoIndexKeys": [
					{
						"Name": "user_id",
						"Direction": "1"
					},
					{
						"Name": "vote_id",
						"Direction": "1"
					}
				],
				"MgoIsUnique": true
			}
		}
	]
}