CODEWITHSUNDEEP
meteor
fuzzybabybunny
fuzzybabybunny

Reputation: 5254

Any way to have Simple Schema in Meteor validate a specific array index?

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,
    }

});

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
    }

});

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.

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.

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

Upvotes: 2

Views: 5144

Answers (1)

Zhiwei Huang
Zhiwei Huang

Reputation: 186

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

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
    }
});

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

Upvotes: 4

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