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Account for null values in prepareRequestPayload#87259

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NikkiWines wants to merge 6 commits intomainfrom
nikki-null-values
Open

Account for null values in prepareRequestPayload#87259
NikkiWines wants to merge 6 commits intomainfrom
nikki-null-values

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Explanation of Change

We were coercing null values to "null"

Fixed Issues

$ https://github.com/Expensify/Expensify/issues/616693
PROPOSAL: N/A internal issue

Tests

before change:

iQvgNI /api.php admin@dev.com !ecash9.3.53-5! ?api? [info] [213.86.169.133->/api.php] Malformed REQUEST: 'authToken', ignoring (should match '<REGEX>' ~~ value: '<REDACTED> (strlen: 4)'
iQvgNI /api.php admin@dev.com !ecash9.3.53-5! ?api? [info] Processing 'SigninUser' for 'expensify.com' from '213.86.169.133'  ~~ command: 'SigninUser' twoFactorAuthCode: '<REDACTED>' email: 'admin@dev.com' preferredLocale: 'en' 

also verified locally that the '<REDACTED>' value was in fact null

after changes:

Wz26ps /api.php admin@dev.com !ecash9.3.53-5! ?api? [info] [App] 2026-04-07T13:52:03.482Z - [info] [API] Called API write ~~ command: 'SigninUser' twoFactorAuthCode: '<REDACTED>' email: 'admin@dev.com' preferredLocale: 'en'

No malformed request 🎊

  • Verify that no errors appear in the JS console

Offline tests

N/A

QA Steps

  1. Log into an account on staging newDot
  2. Look for logs associated with your SigninUser attempt
  3. Confirm you don't see a Malformed REQUEST: 'authToken', ignoring (should match ... warning (like this one)
  • Verify that no errors appear in the JS console

PR Author Checklist

  • I linked the correct issue in the ### Fixed Issues section above
  • I wrote clear testing steps that cover the changes made in this PR
    • I added steps for local testing in the Tests section
    • I added steps for the expected offline behavior in the Offline steps section
    • I added steps for Staging and/or Production testing in the QA steps section
    • I added steps to cover failure scenarios (i.e. verify an input displays the correct error message if the entered data is not correct)
    • I turned off my network connection and tested it while offline to ensure it matches the expected behavior (i.e. verify the default avatar icon is displayed if app is offline)
    • I tested this PR with a High Traffic account against the staging or production API to ensure there are no regressions (e.g. long loading states that impact usability).
  • I included screenshots or videos for tests on all platforms
  • I ran the tests on all platforms & verified they passed on:
    • Android: Native
    • Android: mWeb Chrome
    • iOS: Native
    • iOS: mWeb Safari
    • MacOS: Chrome / Safari
  • I verified there are no console errors (if there's a console error not related to the PR, report it or open an issue for it to be fixed)
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    • I verified that any new or modified comments were clear, correct English, and explained "why" the code was doing something instead of only explaining "what" the code was doing.
    • I verified any copy / text shown in the product is localized by adding it to src/languages/* files and using the translation method
      • If any non-english text was added/modified, I used JaimeGPT to get English > Spanish translation. I then posted it in #expensify-open-source and it was approved by an internal Expensify engineer. Link to Slack message:
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  • If a new code pattern is added I verified it was agreed to be used by multiple Expensify engineers
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  • I added unit tests for any new feature or bug fix in this PR to help automatically prevent regressions in this user flow.
  • If the main branch was merged into this PR after a review, I tested again and verified the outcome was still expected according to the Test steps.

Screenshots/Videos

Android: Native
Android: mWeb Chrome
iOS: Native
iOS: mWeb Safari
MacOS: Chrome / Safari

@NikkiWines NikkiWines self-assigned this Apr 7, 2026
@NikkiWines NikkiWines requested a review from a team as a code owner April 7, 2026 13:55
@NikkiWines NikkiWines added the InternalQA This pull request required internal QA label Apr 7, 2026
@NikkiWines NikkiWines requested a review from a team as a code owner April 7, 2026 13:55
@melvin-bot melvin-bot bot requested a review from sobitneupane April 7, 2026 13:55
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melvin-bot bot commented Apr 7, 2026

@sobitneupane Please copy/paste the Reviewer Checklist from here into a new comment on this PR and complete it. If you have the K2 extension, you can simply click: [this button]

@melvin-bot melvin-bot bot requested review from heyjennahay and removed request for a team April 7, 2026 13:55
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const value = data[key];

if (value === undefined) {
if (value === undefined || value === null) {
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P1 Badge Keep nullable params in FormData payload

This new value === null filter drops explicit nulls from all requests, but some commands rely on sending a nullable field to clear server-side state. For example, SET_POLICY_TAG_APPROVER intentionally sends approver: null when unselecting an approver (src/libs/actions/Policy/Tag.ts:1283-1289), and the param is defined as required-but-nullable (src/libs/API/parameters/SetPolicyTagApproverParams.ts:1-5). After this change, that key is omitted entirely, so the backend cannot distinguish “clear this value” from “no update,” which can leave stale data.

Useful? React with 👍 / 👎.

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🤔 I'm pretty sure this behavior is broken for that flow (and others) then, since we're not passing null but rather the stringified version of it

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@NikkiWines NikkiWines Apr 7, 2026

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Looking at the web code, we'd just end up throwing an error here the value doesn't match the expected format 😄

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And, actually, with this fix the backend will check Request::getString('approver') which will return '' and then createOrUpdateApprovalRule receives '', which will return false in strlen and give us the behavior we actually want - so this fixes that bug too :D

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codecov bot commented Apr 8, 2026

Codecov Report

✅ Changes either increased or maintained existing code coverage, great job!

Files with missing lines Coverage Δ
src/libs/prepareRequestPayload/index.native.ts 67.64% <100.00%> (ø)
src/libs/prepareRequestPayload/index.ts 0.00% <0.00%> (ø)
... and 217 files with indirect coverage changes

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yay finally - @sobitneupane this is ready for a review 🙇

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