有什么方法可以让 Meteor 中的简单模式验证特定的数组索引? [英] Any way to have Simple Schema in Meteor validate a specific array index?

问题描述

根据我在文档中的理解，您可以像这样定义架构:

From what I understand in the docs, you can define your schema like this:

MySchema = new SimpleSchema({

    //This says that the addresses key is going to contain an array

    addresses: {
        type: [Object], 
    },

    // To indicate the presence of an array, use a $:

    "addresses.$.street": {
        type: String,
    },
    "addresses.$.city": {
        type: String,
    }

});

好的，我知道这部分了.但是如果我想验证特定数组索引中的内容怎么办?我想要这样的东西:

Ok, I get this part. But what if I wanted to validate the contents in a specific array index? I want something like this:

MySchema = new SimpleSchema({

    //This says that the itemsOrdered key is going to contain an array

    itemsOrdered: {
        type: [Object], 
    },

    // Here I want to validate certain indexes in the array.

    "itemsOrdered.0.sku": {
        type: String
    },
    "itemsOrdered.0.price": {
        type: Number
    },

    "itemsOrdered.1.sku": {
        type: String
    },
    "itemsOrdered.1.price": {
        type: Number
    },
    "itemsOrdered.1.quantity": {
        type: Number
    },
    "itemsOrdered.2.sku": {
        type: String
    },
    "itemsOrdered.2.price": {
        type: Number
    },
    "itemsOrdered.2.customerNotes": {
        type: String
        optional: true
    }

});

所以在这里我尝试验证数组索引 0、1 和 2 中的值.每个数组索引都有一个不同的已排序项.

So here I'm trying to validate the values inside array index 0, 1, and 2. Each array index has a different item that has been ordered.

通常我会使用哈希表数据结构，但为此我需要保留顺序，这就是我使用数组的原因.

Normally I would use a hash table data structure, but for this purpose I need to preserve order which is why I'm using an array.

当我尝试运行此代码时出现错误无法读取未定义的属性blackbox"

When I try to run this code I get an error Cannot read property 'blackbox' of undefined

推荐答案

您是否考虑过自定义验证?https://github.com/aldeed/meteor-simple-schema/blob/master/README.md#custom-validation

Have you considered custom validation? https://github.com/aldeed/meteor-simple-schema/blob/master/README.md#custom-validation

根据函数内的文档，this 的 key 属性将提供您想要的信息.所以你可以有类似的东西:

According to the doc within the function the key property of this will provide the information you want. So you could have something like:

MySchema = new SimpleSchema({

    //This says that the itemsOrdered key is going to contain an array

    itemsOrdered: {
        type: [Object], 
    },

    // Here I want to validate certain indexes in the array.

    "itemsOrdered.$.sku": {
        type: String,
        custom: function () {
            var key = this.key,
                re = /\d+/;
            var index = Number(key.match(re)[0]);
            // Do some custom validation
        }
    },
    "itemsOrdered.$.price": {
        type: Number
    },

    "itemsOrdered.$.quantity": {
        type: Number,
        optional: true
    },

    "itemsOrdered.$.customerNotes": {
        type: String,
        optional: true
    }
});

这里我将验证逻辑放在 sku 字段中，因为它是必需的.

Here I put the validation logic in the sku field since it's required.

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