dxDataGrid - AI Assistant: Implement partial re-rendering of messages when their status is updated#33531
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Alyar666 merged 3 commits intoDevExpress:26_1from May 8, 2026
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Pull request overview
This PR updates the dxDataGrid AI Assistant’s chat rendering pipeline to support partial message updates when message status changes, relying on dxChat’s DataSource push-update path rather than full reloads.
Changes:
- Added message lookup by id and updated the dxChat
messageTemplateto re-read the latest message data fromcomponent.option('items'), avoiding stale template data during partial updates. - Switched AI message header/error rendering to use
text(header, to trigger dxChat bubble updates) anderrorText(details), and adjusted controller push updates accordingly. - Expanded unit/integration tests to cover status transitions and verify only the updated message DOM node re-renders.
Reviewed changes
Copilot reviewed 5 out of 5 changed files in this pull request and generated 4 comments.
Show a summary per file
| File | Description |
|---|---|
| packages/devextreme/js/__internal/grids/grid_core/ai_chat/utils.ts | Adds findMessageById helper for resolving the latest message instance by id. |
| packages/devextreme/js/__internal/grids/grid_core/ai_chat/ai_chat.ts | Updates message templating to use fresh item data; uses text as the header trigger and errorText for error details. |
| packages/devextreme/js/__internal/grids/grid_core/ai_chat/ai_chat.test.ts | Refactors template invocation helpers and adds coverage for “stale template vs fresh items” behavior. |
| packages/devextreme/js/__internal/grids/grid_core/ai_assistant/ai_assistant_controller.ts | Adjusts pushed message fields (text/errorText), pending/error headers, and removes reshapeOnPush to enable push-change-based partial updates. |
| packages/devextreme/js/__internal/grids/grid_core/ai_assistant/tests/ai_assistant_view_controller.integration.test.ts | Adds end-to-end-ish coverage for pending/success/failure rendering and “only updated message re-renders” behavior. |
added 2 commits
May 8, 2026 15:38
… when their status is updated
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anna-shakhova
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May 8, 2026
dmirgaev
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May 8, 2026
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