dfc0937 fix(chat): preserve image inputs when loading DB history
📊 Changes
1 file changed (+46 additions, -0 deletions)
View changed files
📝backend/open_webui/utils/middleware.py (+46 -0)
📄 Description
Pull Request Checklist
Target branch: Verify that the pull request targets the dev branch. PRs targeting main will be immediately closed.
Description: Provide a concise description of the changes made in this pull request down below.
Changelog: Ensure a changelog entry following the format of Keep a Changelog is added at the bottom of the PR description.
Documentation: Add docs in Open WebUI Docs Repository. Document user-facing behavior, environment variables, public APIs/interfaces, or deployment steps.
Dependencies: Are there any new or upgraded dependencies? If so, explain why, update the changelog/docs, and include any compatibility notes. Actually run the code/function that uses updated library to ensure it doesn't crash.
Testing: Perform manual tests to verify the implemented fix/feature works as intended AND does not break any other functionality. Include reproducible steps to demonstrate the issue before the fix. Test edge cases (URL encoding, HTML entities, types). Take this as an opportunity to make screenshots of the feature/fix and include them in the PR description.
Agentic AI Code: Confirm this Pull Request is not written by any AI Agent or has at least gone through additional human review AND manual testing. If any AI Agent is the co-author of this PR, it may lead to immediate closure of the PR.
Code review: Have you performed a self-review of your code, addressing any coding standard issues and ensuring adherence to the project's coding standards?
Design & Architecture: Prefer smart defaults over adding new settings; use local state for ephemeral UI logic. Open a Discussion for major architectural or UX changes.
Git Hygiene: Keep PRs atomic (one logical change). Clean up commits and rebase on dev to ensure no unrelated commits (e.g. from main) are included. Push updates to the existing PR branch instead of closing and reopening.
Title Prefix: Use fix
Changelog Entry
Description
Preserve image inputs when chat history is loaded from DB, so multimodal models still receive image_url content.
Added
None
Changed
None
Deprecated
None
Removed
None
Fixed
Image inputs were dropped after DB history replacement, causing models to see text-only messages.
Security
None
Breaking Changes
BREAKING CHANGE: None
Additional Information
Root cause: DB history replace step strips files and loses image content.
Fix: reattach parent message images into the last user message before dispatch.
Screenshots or Videos
Not applicable (backend-only change).
Contributor License Agreement
By submitting this pull request, I confirm that I have read and fully agree to the Contributor License Agreement (CLA), and I am providing my contributions under its terms.
Note
Deleting the CLA section will lead to immediate closure of your PR and it will not be merged in.
🔄 This issue represents a GitHub Pull Request. It cannot be merged through Gitea due to API limitations.
## 📋 Pull Request Information
**Original PR:** https://github.com/open-webui/open-webui/pull/21484
**Author:** [@EheinWang](https://github.com/EheinWang)
**Created:** 2/16/2026
**Status:** ❌ Closed
**Base:** `dev` ← **Head:** `fix/vision-images-lost`
---
### 📝 Commits (1)
- [`dfc0937`](https://github.com/open-webui/open-webui/commit/dfc09372d381d8e32cb05400d3b79bae640a7051) fix(chat): preserve image inputs when loading DB history
### 📊 Changes
**1 file changed** (+46 additions, -0 deletions)
<details>
<summary>View changed files</summary>
📝 `backend/open_webui/utils/middleware.py` (+46 -0)
</details>
### 📄 Description
# Pull Request Checklist
- [x] **Target branch:** Verify that the pull request targets the `dev` branch. **PRs targeting `main` will be immediately closed.**
- [x] **Description:** Provide a concise description of the changes made in this pull request down below.
- [x] **Changelog:** Ensure a changelog entry following the format of [Keep a Changelog](https://keepachangelog.com/) is added at the bottom of the PR description.
- [ ] **Documentation:** Add docs in [Open WebUI Docs Repository](https://github.com/open-webui/docs). Document user-facing behavior, environment variables, public APIs/interfaces, or deployment steps.
- [x] **Dependencies:** Are there any new or upgraded dependencies? If so, explain why, update the changelog/docs, and include any compatibility notes. Actually run the code/function that uses updated library to ensure it doesn't crash.
- [x] **Testing:** Perform manual tests to **verify the implemented fix/feature works as intended AND does not break any other functionality**. Include reproducible steps to demonstrate the issue before the fix. Test edge cases (URL encoding, HTML entities, types). Take this as an opportunity to **make screenshots of the feature/fix and include them in the PR description**.
- [x] **Agentic AI Code:** Confirm this Pull Request is **not written by any AI Agent** or has at least **gone through additional human review AND manual testing**. If any AI Agent is the co-author of this PR, it may lead to immediate closure of the PR.
- [x] **Code review:** Have you performed a self-review of your code, addressing any coding standard issues and ensuring adherence to the project's coding standards?
- [x] **Design & Architecture:** Prefer smart defaults over adding new settings; use local state for ephemeral UI logic. Open a Discussion for major architectural or UX changes.
- [x] **Git Hygiene:** Keep PRs atomic (one logical change). Clean up commits and rebase on `dev` to ensure no unrelated commits (e.g. from `main`) are included. Push updates to the existing PR branch instead of closing and reopening.
- [x] **Title Prefix:** Use `fix`
# Changelog Entry
### Description
- Preserve image inputs when chat history is loaded from DB, so multimodal models still receive `image_url` content.
### Added
- None
### Changed
- None
### Deprecated
- None
### Removed
- None
### Fixed
- Image inputs were dropped after DB history replacement, causing models to see text-only messages.
### Security
- None
### Breaking Changes
- **BREAKING CHANGE**: None
---
### Additional Information
- Root cause: DB history replace step strips `files` and loses image content.
- Fix: reattach parent message images into the last user message before dispatch.
### Screenshots or Videos
- Not applicable (backend-only change).
### Contributor License Agreement
By submitting this pull request, I confirm that I have read and fully agree to the [Contributor License Agreement (CLA)](https://github.com/open-webui/open-webui/blob/main/CONTRIBUTOR_LICENSE_AGREEMENT), and I am providing my contributions under its terms.
> [!NOTE]
> Deleting the CLA section will lead to immediate closure of your PR and it will not be merged in.
---
<sub>🔄 This issue represents a GitHub Pull Request. It cannot be merged through Gitea due to API limitations.</sub>
Blocking a user prevents them from interacting with repositories, such as opening or commenting on pull requests or issues. Learn more about blocking a user.
📋 Pull Request Information
Original PR: https://github.com/open-webui/open-webui/pull/21484
Author: @EheinWang
Created: 2/16/2026
Status: ❌ Closed
Base:
dev← Head:fix/vision-images-lost📝 Commits (1)
dfc0937fix(chat): preserve image inputs when loading DB history📊 Changes
1 file changed (+46 additions, -0 deletions)
View changed files
📝
backend/open_webui/utils/middleware.py(+46 -0)📄 Description
Pull Request Checklist
devbranch. PRs targetingmainwill be immediately closed.devto ensure no unrelated commits (e.g. frommain) are included. Push updates to the existing PR branch instead of closing and reopening.fixChangelog Entry
Description
image_urlcontent.Added
Changed
Deprecated
Removed
Fixed
Security
Breaking Changes
Additional Information
filesand loses image content.Screenshots or Videos
Contributor License Agreement
By submitting this pull request, I confirm that I have read and fully agree to the Contributor License Agreement (CLA), and I am providing my contributions under its terms.
🔄 This issue represents a GitHub Pull Request. It cannot be merged through Gitea due to API limitations.