687c06e fix: preserve image data when loading messages from DB (#155)
📊 Changes
1 file changed (+35 additions, -4 deletions)
View changed files
📝backend/open_webui/utils/middleware.py (+35 -4)
📄 Description
The load_messages_from_db function replaces frontend-constructed messages with DB messages for tool call handling, but only keeps role/content/output fields, dropping the files array.
The frontend builds image_url content parts from message.files at request time. Since the DB stores content as plain text (not multipart arrays with image_url items), replacing messages causes all image data to be silently lost. Vision-capable models then receive no images.
Fix: reconstruct image_url content parts from the message's files array when loading from DB, matching the frontend's behavior.
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## 📋 Pull Request Information
**Original PR:** https://github.com/open-webui/open-webui/pull/21480
**Author:** [@Classic298](https://github.com/Classic298)
**Created:** 2/16/2026
**Status:** ❌ Closed
**Base:** `dev` ← **Head:** `fix-image-input`
---
### 📝 Commits (1)
- [`687c06e`](https://github.com/open-webui/open-webui/commit/687c06ec11d9f536fd2bd07f4b24c62afa5e9b09) fix: preserve image data when loading messages from DB (#155)
### 📊 Changes
**1 file changed** (+35 additions, -4 deletions)
<details>
<summary>View changed files</summary>
📝 `backend/open_webui/utils/middleware.py` (+35 -4)
</details>
### 📄 Description
The load_messages_from_db function replaces frontend-constructed messages with DB messages for tool call handling, but only keeps role/content/output fields, dropping the files array.
The frontend builds image_url content parts from message.files at request time. Since the DB stores content as plain text (not multipart arrays with image_url items), replacing messages causes all image data to be silently lost. Vision-capable models then receive no images.
Fix: reconstruct image_url content parts from the message's files array when loading from DB, matching the frontend's behavior.
Fixes #21477, #21457
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📋 Pull Request Information
Original PR: https://github.com/open-webui/open-webui/pull/21480
Author: @Classic298
Created: 2/16/2026
Status: ❌ Closed
Base:
dev← Head:fix-image-input📝 Commits (1)
687c06efix: preserve image data when loading messages from DB (#155)📊 Changes
1 file changed (+35 additions, -4 deletions)
View changed files
📝
backend/open_webui/utils/middleware.py(+35 -4)📄 Description
The load_messages_from_db function replaces frontend-constructed messages with DB messages for tool call handling, but only keeps role/content/output fields, dropping the files array.
The frontend builds image_url content parts from message.files at request time. Since the DB stores content as plain text (not multipart arrays with image_url items), replacing messages causes all image data to be silently lost. Vision-capable models then receive no images.
Fix: reconstruct image_url content parts from the message's files array when loading from DB, matching the frontend's behavior.
Fixes #21477, #21457
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.