How to load search params to Leankit Post request from Google Apps Script - api

Question

I have set up a working api call using Postman that returns the information that I want to return. I need to set up the same API call using google apps script but for some reason the search params are not loading. The api response gives the same result as the Postman response was without any search params being loaded.
My code so far is shown below. I've tried removing and adding back different settings in various orders but haven't found anything that finds the card related to the search term that I used.
function cardSearch(part) {
var settings = {
"method": "POST",
"contentType": "application/json",
"headers": {
"async": true,
"crossDomain": true,
"Authorization": "Basic *********",
"User-Agent": "PostmanRuntime/7.15.0",
"Accept": "*/*",
"Cache-Control": "no-cache",
"Postman-Token": "************",
"accept-encoding": "gzip, deflate",
"contentLength": "60",
"Connection": "keep-alive",
"cache-control": "no-cache"
},
"payload": JSON.stringify({"searchOptions": { "SearchTerm": part, "Page": 1 } })
// part is loaded into this function as a variable
}
var url = "https://**********.leankit.com/kanban/api/board/********/searchcards";
var response = UrlFetchApp.fetch(url,settings);
Logger.log(response);
var result = JSON.parse(response.getContentText());
var results = result.ReplyData[0].Results;
Logger.log(results);
}
Expected Result:
JSON describing 1 or more cards titled or header'd with the search term of my choosing if one exists.
Actual Result:
JSON describing the first 20 cards that were uploaded to the leankit board I'm referencing.
{TypeName=Test, ClassOfServiceId=0, Size=1, BlockReason=null, IsOlderThanXDays=true, SystemType=Card, Index=139, ActualStartDate=9/12/2018 4:11:09 PM, DrillThroughStatistics=null, CreateDate=9/10/2018, PriorityText=High, StartDate=9/12/2018, CurrentTaskBoardId=*****, ExternalCardIdPrefix=null, LastComment=null, AssignedUserIds=[******], CardTypeIconColor=212121, Version=84, LaneTitle=Finished As Planned, DrillThroughBoardId=null, Tags=Testing, SmallGravatarLink=********, ClassOfServiceCustomIconName=null, TypeId=*******, ClassOfServiceIconPath=null, DrillThroughProgressSizeComplete=null, ParentBoardId=0, Priority=2, Color=#0084FF, CurrentContext=Tasks, ExternalCardID=Material Testing, AssignedUsers=[{AssignedUserId=*********, AssignedUserName=*********, FullName=******** *****, Id=********, EmailAddress=******#*****.com, GravatarLink=*********, SmallGravatarLink=**********}], GravatarLink=********, DrillThroughProgressComplete=null, HasDrillThroughBoard=false, Active=false, ExternalSystemName=null, ExternalSystemUrl=null, Icon=, Id=********, DrillThroughCompletionPercent=null, CountOfOldCards=0, Description=<p>***********</p>, AssignedUserId=*******, ClassOfServiceTitle=null, LastAttachment=null, BoardId=**********, TypeColorHex=#0084FF, ActualFinishDate=9/15/2018 8:28:55 PM, HasMultipleDrillThroughBoards=false, CardDrillThroughBoardIds=[], TypeIconPath=null, ClassOfServiceColorHex=null, BoardTitle=********, TaskBoardTotalCards=3, DueDate=09/19/2018, DrillThroughProgressSizeTotal=null, IsBlocked=false, ParentCardId=null, ParentCardIds=[], AssignedUserName=******, TaskBoardCompletedCardSize=11, Title=Test Card, ClassOfServiceCustomIconColor=null, ParentBoardIds=[], CardTypeIconName=blank_icon, LastActivity=09/18/2018 03:28:55 PM, AttachmentsCount=0, DrillThroughProgressTotal=null, TaskBoardCompletionPercent=100, TaskBoardTotalSize=11, Type={Id=********}, CommentsCount=0, DateArchived=01/15/2018, LaneId=********, ParentTaskboardId=null, LastMove=09/16/2018 04:18:34 PM, TaskBoardCompletedCardCount=3, BlockStateChangeDate=null}

Answer 1

You need to put both the keys and values of the JSON request in quotes, as specified in the documentation E.g. 'method':'post'
Everything that is not a valid parameter for options for UrlFetchApp.fetch() goes into headers or payload - depending on the required syntax of the API you are calling. In particular: async and crossDomain belongs into headers, while everything inside data should be assigned to payload
The documentation for the request you are using specifies that the page number should not be in quotes
Those questions might be helpful for you:
https://stackoverflow.com/a/35155175/11599789
Unable to send Post Request on Google Apps Script