Javascript 如何使用Joi基于计算值验证对象?
我在wgich中有一个对象,我想用一些计算值验证它的值。现在我用javascript的方式来做,但我想用javascript来做 我正在使用javascript验证它Javascript 如何使用Joi基于计算值验证对象?,javascript,node.js,validation,object,joi,Javascript,Node.js,Validation,Object,Joi,我在wgich中有一个对象,我想用一些计算值验证它的值。现在我用javascript的方式来做,但我想用javascript来做 我正在使用javascript验证它 var validator = function(doc) { var maxScore = 0 for (var item of doc.questions) { maxScore += 1000 * (item.factor == undefined ? 1: item.factor)
var validator = function(doc) {
var maxScore = 0
for (var item of doc.questions) {
maxScore += 1000 * (item.factor == undefined ? 1: item.factor)
}
if (maxScore == 0) {
throw new Error("maxScore is 0")
}
if (doc.scoreThreshold > maxScore) {
throw new Error("scoreThreshold more than maxScore")
} else if ((doc.scoreThreshold / maxScore) > 0.95) {
throw new Error("scoreThreshold too close to maxScore")
}
}
我如何用Joi
的方式进行此验证?您可以使用自定义验证
any.custom(方法,[description])
我们可以使用
这不是一种快乐的方式。当我得不到任何谷歌解决方案时,我会使用any.custom。@AlokSinghMahor这个对我来说很好。不知道你所说的“Joi way”是什么意思。@MarkMcKelvy:关于Joi way,请参阅其他答案
var validator = function(doc) {
var maxScore = 0
for (var item of doc.questions) {
maxScore += 1000 * (item.factor == undefined ? 1: item.factor)
}
if (maxScore == 0) {
throw new Error("maxScore is 0")
}
if (doc.scoreThreshold > maxScore) {
throw new Error("scoreThreshold more than maxScore")
} else if ((doc.scoreThreshold / maxScore) > 0.95) {
throw new Error("scoreThreshold too close to maxScore")
}
}
var schema = Joi.object()
.keys({
scoreThreshold: Joi.number(),
questions: Joi.array().items(
Joi.object({
question: Joi.string(),
answer: Joi.number(),
factor: Joi.number()
})
)
})
.custom((doc, helpers) => {
var maxScore = 0;
for (var item of doc.questions) {
maxScore += 1000 * (item.factor == undefined ? 1 : item.factor);
}
if (maxScore == 0) {
throw new Error("maxScore is 0");
}
if (doc.scoreThreshold > maxScore) {
throw new Error("scoreThreshold more than maxScore");
} else if (doc.scoreThreshold / maxScore > 0.95) {
throw new Error("scoreThreshold too close to maxScore");
}
// Return the value unchanged
return doc;
});
var calculateMaxScore = function(questions) {
return (questions || []).reduce((t, e) => t + 1000 * (e.factor == undefined ? 1: e.factor), 0)
}
var schema = Joi.object({
"scoreThreshold": Joi.number().integer()
.greater(0)
.less(Joi.ref('questions', { adjust: (v) => calculateMaxScore(v) * 0.95 }))
.required(),
"questions": Joi.array().items(Joi.object({
"question": JJoi.string().min(1)).required(),
"answer": Joi.number().integer().min(0).required(),
"factor": Joi.number().integer().min(0)
}))
.required()
})