筛选条件

筛选条件，用于向数据库查询数据。

Steedos 使用数组的格式定义一个或多个筛选条件。例如以下过滤器用于查询本月创建的，责任人是本人的数据。

filters: [["priority", "=", "high"],["owner","=","{userId}"],["created", "=", this_month]]
filters: [["status", "=", ["closed","open"]]]
filters: [["age", "between", [20,30]]]

运算符 operation#

"=": 等于
"!=": 不等于
">": 大于
">=": 大于等于
"<": 小于
"<=": 小于等于
"startswith": 以...开始
"contains": 包含...
"notcontains": 不包含...
"between": 范围

组合过滤#

“非”(not)操作#

可以在当前筛选条件的基础上取反，例如：

["not", ["value", "=", 3]]

“与(and)”、“或(or)”操作#

多个过滤器可以通过“与(and)”、“或(or)”操作进行组合，例如：

[ [ "value", ">", 3 ], "and", [ "value", "<", 7 ] ]
[ [ "value", ">", 7 ], "or", [ "value", "<", 3 ] ]

如果不指定“与(and)”、“或(or)”操作，系统默认按照“与(and)”操作执行过滤。所以下两种写法结果相同：

[ [ "value", ">", 3 ], "and", [ "value", "<", 7 ] ]
[ [ "value", ">", 3 ], [ "value", "<", 7 ] ]

筛选条件值为数组时的增强功能#

运算符为"="时，条件自动按"or"裂变连接成多个筛选条件，类似实现了"in"操作功能，所以下两种写法结果相同：

[["status", "in", ["closed","open"]]]
[ [ "status", "=", "closed" ], "or", [ "status", "=", "open" ] ]

运算符为"!="时，条件自动按"and"裂变连接成多个筛选条件，所以下两种写法结果相同：

[["status", "not in", ["closed","open"]]]
[ [ "status", "!=", "closed" ], "and", [ "status", "!=", "open" ] ]

运算符为"between"时，条件自动转换成">="及"<="运算符对应的筛选条件，以下各组效果相同：

[["age", "between", [20,30]]] 等效于 [ [ "age", ">=", 20 ], "and", [ "age", "<=", 30 ] ]
[["age", "between", [null,30]]] 等效于 [ [ "age", "<=", 30 ] ]
[["age", "between", [20,null]]] 等效于 [ [ "age", ">=", 20 ] ]

between只支持数值及日期时间类型，且过滤值必须是两个元素的数组格式

其他情况一律自动按"or"裂变连接成多个筛选条件

[["tag", "contains", ["start","end"]]] 等效于 [ [ "tag", "contains", "start" ], "or", [ "tag", "contains", "end" ] ]

公式字段支持#

筛选条件中允许指定当前状态相关属性值为value

"{userId}"：当前登录用户id
"{spaceId}"：当前当前所在工作区
"{user.xxx}"：当前登录用户信息，如user.name,user.mobile,user.email,user.company_id等
其他所有Steedos.USER_CONTEXT中能取到的变量值

实例：

[["assignees", "=", "{userId}"]]

函数支持#

支持两种function方式：

整个filters为function，如：

filters: ()->
    return [[["object_name","=","project_issues"],'or',["object_name","=","tasks"]]]

filters内的filter.value为function，如：

filters: [["object_name", "=", ()->
    return "project_issues"
]]

或

filters: [{
    "field": "object_name"
    "operation": "="
    "value": ()->
        return "project_issues"
}]

日期、时间字段与时区#

日期和时间类型的字段，在数据库中保存的都是UTC时间。其中日期类型字段对应的是00:00:00。

查询日期时间类型字段时，必须先把时间转换为UTC时间格式再执行查询。

例如想要查询创建日期为北京时间下午13:00以前的文档，需要先将北京时间转换为GMT时间再执行查询。

[["created","<=","2019-08-06T07:00:00Z"]]