Merge pull request #3113 from BSd3v/strip-background-polls

Stripping Input Data from Background Callback Polling

Author: T4rk1n

CHANGELOG.md

@@ -2,6 +2,12 @@
 All notable changes to `dash` will be documented in this file.
 This project adheres to [Semantic Versioning](https://semver.org/).
 
+## [unreleased]
+
+## Changed
+- [#3113](https://github.com/plotly/dash/pull/3113) Adjusted background polling requests to strip the data from the request, this allows for context to flow as normal. This addresses issue [#3111](https://github.com/plotly/dash/pull/3111)
+
+
 ## [3.0.1] - 2025-03-24
 
 ## Fixed

dash/dash-renderer/src/actions/callbacks.ts

@@ -440,6 +440,7 @@ function handleServerside(
     const fetchCallback = () => {
         const headers = getCSRFHeader() as any;
         let url = `${urlBase(config)}_dash-update-component`;
+        let newBody = body;
 
         const addArg = (name: string, value: string) => {
             let delim = '?';
@@ -448,11 +449,19 @@ function handleServerside(
             }
             url = `${url}${delim}${name}=${value}`;
         };
-        if (cacheKey) {
-            addArg('cacheKey', cacheKey);
-        }
-        if (job) {
-            addArg('job', job);
+        if (cacheKey || job) {
+            if (cacheKey) addArg('cacheKey', cacheKey);
+            if (job) addArg('job', job);
+
+            // clear inputs as background callback doesnt need inputs, just verify for context
+            const tmpBody = JSON.parse(newBody);
+            for (let i = 0; i < tmpBody.inputs.length; i++) {
+                tmpBody.inputs[i]['value'] = null;
+            }
+            for (let i = 0; i < (tmpBody?.state || []).length; i++) {
+                tmpBody.state[i]['value'] = null;
+            }
+            newBody = JSON.stringify(tmpBody);
         }
 
         if (moreArgs) {
@@ -465,7 +474,7 @@ function handleServerside(
             mergeDeepRight(config.fetch, {
                 method: 'POST',
                 headers,
-                body
+                body: newBody
             })
         );
     };