Regular Expression Validation becomes /[object Object]/ after the first submission in the Edit Form

English Forum Issue Report
1

* Describe the bug

I set a Pattern Validation Rule for a string (single line text) field, e.g. \d{4}. The validation only worked for the first editing. Subsequently, it always throws an error warning: “Study ID” with value “1001” fails to match the required pattern: /[object Object]/. It seems the regex expression was changed internally after the first submission.

* Environment

  • NocoBase version: v2.0.0-alpha.56
  • Database type and version: PostgreSQL 16
  • OS: Server - Ubuntu 24.04.3 LTS, Client - Windows 11
  • Deployment Methods: Docker
  • Docker image version: nocobase/nocobase:2.0.0-alpha.56-full
  • NodeJS version: NA

* How To Reproduce

  1. To set a Pattern Validation Rule (e.g. \d{4}) for a string (single line text) field (e.g. Study ID).
  2. The validation only worked for the first submission in the Edit Form. Subsequently, it always throws an error warning: “Study ID” with value “1001” fails to match the required pattern: /[object Object]/.

Expected behavior

It can check the field value against the regex expression.

Screenshots

NA

Logs

I don’t see any error log generated in docker compose logs when it gives the error warning in the Edit Form.

2

Hello, I couldn’t reproduce your problem. Please reproduce it in the demo and provide the link to reproduce it.
https://a_8hwne7u84ho.v13.demo.nocobase.com/admin/

4

I have reproduced the bug in the demo. Thanks.

{93F2A09B-4806-40A2-A707-DB7BF54CFD7F}
{93F2A09B-4806-40A2-A707-DB7BF54CFD7F}1427×489 28.8 KB

5

I didn’t reproduce the situation you described on the same page. Is it because you copied the data?

6

I can reproduce the bug situation in Chrome, Firefox and Brave browsers. Furthermore, I have set the pattern validation rule to be \d{4} for the field Study ID. However, Study ID “1234567567” can be still saved in the collection. It could be a bug.

7

I cannot reproduce your problem.

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image2370×957 170 KB

8

My PC is Windows 11 Enterprise (Version: 24H2, OS build: 26100.6899). Each browser (Edge, Chrome, Firefox, and Brave) in my PC can reproduce this bug. Could you investigate this bug? Do you need any logs? Thanks.

Recording 2025-12-22 171506

9

Thank you for reporting the issue. Please wait while we fix it.

10

The bug has been fixed. Please upgrade to the latest version and check if the problem is resolved.

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image2592×1029 228 KB

11

I upgraded the system to v2.0.0-beta.9. The bug seemed to be resolved for a while, but then it reappeared.

12

Even I’ve upgraded the system to v2.0.0-beta.20, the regex bug still occurs. Could you help fix this bug?
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13

I couldn’t reproduce your problem. Can you?
https://a_8hwne7u84ho.v13.demo.nocobase.com/admin/d40z6b4643t

14

Demo version:
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I can replicate the issue following the steps below:

  1. Log on and go to the form (https://a_8hwne7u84ho.v13.demo.nocobase.com/admin/d40z6b4643t/view/3f20a0c6edf/filterbytk/338411374444544)
  2. Edit the Study ID and then submit
  3. Log out
  4. Log on and go to the form again
  5. Edit the Study ID and the regex validation becomes /[object Object]/
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    image695×350 5.95 KB
15

Please check this reply. I can reproduce the issue in the demo. Thanks.

16

I opened the page you provided, and it works normally.

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image2706×991 231 KB

17

Try refreshing your browser to see if it works.

18

It works fine right after a system restart, but after I edit the form and submit, the regex validation breaks and turns into /[object Object]/. Please try to submit the form to replicate this issue.
Refreshing the page, logging out and back in, or reopening the browser doesn’t fix it. The issue persists until the system is restarted again.