Parsing Dynamic response in Karate - api

Question

I want to verify the value of "RequestedName" in the following response, where the keys for different drugs is dynamic:
{
"requestId": "c826bee1-610e-4dee-b998-1fe4f8c15a1b",
"requestSource": "",
"responseSource": "client",
"status": 200,
"responseCodes": [
{
"code": "S00001",
"message": "Success.",
"params": {
"entity": ""
}
}
],
"context": null,
"payload": {
"0113ccf86ba79b698b8e7a8fb9effc4b": {
"RequestedName": "paracetamol",
"SearchKey": "0113ccf86ba79b698b8e7a8fb9effc4b",
"Name": "Genexa Acetaminophen Extra Strength",
"PrescribableName": "",
"ProductCodes": [
"69676-0059"
],
"DosageForm": "Tablet, coated",
"Route": "Oral",
"Approved": false,
"UnApproved": false,
"Generic": false,
"Allergen": false,
"Vaccine": false,
"Strength": {
"Number": "500",
"Unit": "mg/1"
},
"Purposes": {},
"SideEffects": {}
},
"0349fa4ea29da419c46745bc7e2a6c07": {
"RequestedName": "paracetamol",
"SearchKey": "0349fa4ea29da419c46745bc7e2a6c07",
"Name": "Pain Reliever",
"PrescribableName": "",
"ProductCodes": [
"70677-0168"
],
"DosageForm": "Tablet, extended release",
"Route": "Oral",
"Approved": true,
"UnApproved": false,
"Generic": true,
"Allergen": false,
"Vaccine": false,
"Strength": {
"Number": "650",
"Unit": "mg/1"
},
"Purposes": {},
"SideEffects": {}
},
"060cfbde5d82d947c56aac304c136fd3": {
"RequestedName": "paracetamol",
"SearchKey": "060cfbde5d82d947c56aac304c136fd3",
"Name": "Betr Pain Relief",
"PrescribableName": "Acetaminophen 500 mg Oral Tablet",
"ProductCodes": [
"80267-0484"
],
"DosageForm": "Tablet",
"Route": "Oral",
"Approved": false,
"UnApproved": false,
"Generic": false,
"Allergen": false,
"Vaccine": false,
"Strength": {
"Number": "500",
"Unit": "mg/1"
},
"Purposes": {},
"SideEffects": {}
},
"0950fcbac262c1c1d3a9e6630615a5f9": {
"RequestedName": "paracetamol",
"SearchKey": "0950fcbac262c1c1d3a9e6630615a5f9",
"Name": "Acetaminophen",
I tired this:
* def list = []
* def fun = function(k, v){ karate.appendTo('list', { key: k, val: v } )}
* karate.forEach(response, fun)
* def keys = $list[?(#.val.payload.RequestedName==drugName)].key
but not working, getting error as below:
def keys = $list[?(#.val.payload.RequestedName==drugName)].key
Failed to parse filter: [?(#.val.payload.RequestedName==drugName)], error on position: 32, char: d
testsuite/GetDrugs.feature:20

Answer 1

Here is the approach you can use:
* def response =
"""
{
dynamicKey1: {
fixedKey: 'fixedValue1',
dataKey: 'dataValue2'
},
dynamicKey2: {
fixedKey: 'fixedValue2',
dataKey: 'dataValue2'
}
}
"""
* def keys = []
* def fun = function(k, v){ if (v.fixedKey == 'fixedValue2') keys.push(k) }
* karate.forEach(response, fun)
* match keys == ['dynamicKey2']