用猫鼬验证而不保存 [英] Validate in mongoose without saving

问题描述

是否可以在不保存的情况下运行猫鼬验证器?基本上，想进行一次改动，并确保在选择以下选项时可以保存 :

Is it possible to run the mongoose validator without also saving? Basically, wanting to do a dry run of a change and making sure that it would save if I chose to:

myThing.validated_property = 5;
try { myThing.check(); } catch(e) { console.log("nope!") }

推荐答案

您可以调用 validate 在猫鼬文档上评估其验证规则:

You can call validate on a Mongoose doc to evaluate its validation rules:

myThing.validated_property = 5;
myThing.validate(function(err) {
    if (err) { console.log('nope!') }       
});

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