Array of Objects as type

[bozzmob]

Thanks for dynogels. It's simply amazing. Impressed with the kind of coverage that it gives.

Is there a way to define JSON data type? or should we use string() type instead?
This is my scenario-

I need to build a DB with schema(rather example) that looks something like-

	"email":"sat@gmail.com" - Hash Key
        "timestamp" : ----- Range Key
	"name":"Sat"
	"phone":"9383883223"
	"version":"version"
	"additionalSigninData":{
		"key1":"value1",
		"key2":"value2"
	}

	"markedLocations":[
		{
			"latitude":"77.33",
			"longitude":"12.33",
			"name":"Home",
			"description":"my new home",
			"placeid":"55334433",
			"image":"url/abc.png"
		}
	]

1. So, I basically need to know how do I hold values in the 'MarkedLocations' array? The array has to hold objects in it.

2. Updating the object's attributes(say updating latitude,longitude) and adding more objects to the array has to be possible.

Please can you suggest how do I achieve this?

[fxpiteam]

+1 I have similar problem. How do we solve this? @clarkie any suggestions?

[cdhowie]

The way to do this with Joi would be something like

Joi.object().keys({
    // other stuff
    markedLocations: Joi.array().items(
        Joi.object().keys({
            latitude: Joi.string(),
            longitude: Joi.string(),
            // etc
        })
    )
})

Note that DynamoDB does not store empty arrays or empty objects, so if you try to store markedLocations: [] and then fetch the same record, the attribute will be undefined and not an empty array.

[cdelgadob]

And what if these markedLocations where in a different table?
Is there a way to tell dynogels that is expecting an object but to store only one of the attributes (i.e. the object's key)?

[cdhowie]

No. Dynogels is not an object-relational mapper.

[clarkie]

Agreed