Figure out different values to send partial update to server - ramda.js

Question

From a form submission I receive two objects: the original values and the dirty values. I like to figure out how to create a diff to send to the server using the following rules:
id field of the root object should always be included
all changed primitive values should be included
all nested changes should be included as well.
if a nested value other than id changed, it should include id as well.
Original values:
{
"id":10,
"name": "tkvw"
"locale": "nl",
"address":{
"id":2,
"street": "Somewhere",
"zipcode": "8965",
},
"subscriptions":[8,9,10],
"category":{
"id":6
},
}
Example expected diff objects:
1) User changes field name to "Foo"
{
"id":10,
"name":"foo"
}
2) User changes field street on address node and category
{
"id":10,
"address":{
"id": 2,
"street":"Changed"
},
"category":{
"id":5
}
}
I do understand the basics of functional programming, but I just need a hint in the right direction (some meta code maybe).

Answer 1

Take a look at JSON Patch (rfc6902), JSON Patch is a format for describing changes to a JSON document. For example:
[
{ "op": "replace", "path": "/baz", "value": "boo" },
{ "op": "add", "path": "/hello", "value": ["world"] },
{ "op": "remove", "path": "/foo"}
]
You generate a patch by comparing to JS objects/arrays, and then you can apply the patch to the original object (on the server side for example) to reflect changes.
You can create a patch using the fast-json-patch lib.
const obj1 = {"id":10,"name":"tkvw","locale":"nl","address":{"id":2,"street":"Somewhere","zipcode":"8965"},"subscriptions":[8,9,10],"category":{"id":6}};
const obj2 = {"id":10,"name":"cats","locale":"nl","address":{"id":2,"street":"Somewhere","zipcode":"8965"},"subscriptions":[8,9,10,11],"category":{"id":7}};
const delta = jsonpatch.compare(obj1, obj2);
console.log('delta:\n', delta);
const doc = jsonpatch.applyPatch(obj1, delta).newDocument;
console.log('patched obj1:\n', doc);
<script src="https://cdnjs.cloudflare.com/ajax/libs/fast-json-patch/2.0.6/fast-json-patch.min.js"></script>