Add placeholder image thumbnail if image loading error #1293

New Issue

MrUnknownDE · 2026-04-05T23:04:59+02:00

MrUnknownDE commented

2026-04-05 23:04:59 +02:00

Originally created by @FloRinke on 9/8/2025

NetBox Edition

NetBox Community

NetBox Version

v4.4.0

Python Version

3.12

Steps to Reproduce

Have Cache-Redis without disk persistence (in my case: default directory write-protected by Kubernetes)
Attach Image to a suitable object (in my case a location)
Go to tab "Images"

Expected Behavior

See an empty box or an error placeholder ("Thumbnail cannot be generated") and a clickable link to the image resource

Observed Behavior

The image file name is shown as text, no preview, no clickable link

In the DOM it's apparent all Tags related to the Thumbnail are missing:

*Originally created by @FloRinke on 9/8/2025* ### NetBox Edition NetBox Community ### NetBox Version v4.4.0 ### Python Version 3.12 ### Steps to Reproduce 1. Have Cache-Redis without disk persistence (in my case: default directory write-protected by Kubernetes) 2. Attach Image to a suitable object (in my case a location) 3. Go to tab "Images" ### Expected Behavior See an empty box or an error placeholder ("Thumbnail cannot be generated") and a clickable link to the image resource <img width="722" height="412" alt="Image" src="https://github.com/user-attachments/assets/9c914ece-6def-4eb7-b345-4a7281dc7380" /> ### Observed Behavior The image file name is shown as text, no preview, no clickable link <img width="725" height="217" alt="Image" src="https://github.com/user-attachments/assets/8d2a95bd-8a11-41df-a901-57e7d6e3cf64" /> In the DOM it's apparent all Tags related to the Thumbnail are missing: <img width="622" height="152" alt="Image" src="https://github.com/user-attachments/assets/8682916b-7232-4c22-a368-d803657d0476" />

MrUnknownDE closed this issue

2026-04-05 23:04:59 +02:00

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Branches Tags

main

21455-sql-indexes-audit

21357-register-model-actions

feature

20924-plugin-ui-components

21766-improve-test-coverage-for-sortable-table-columns

21157-export-template-public-models

21025-pre-render-config-contexts

21364-swagger

feature-ip-prefix-link

20911-dropdown-3

fix_module_substitution

21160-filterset

20911-dropdown-2

20044-elevation-stuck-lightmode

7604-filter-modifiers-v3

20660-script-load

19724-graphql

14884-script

19720-macaddress-interface-generic-relation

fix-19669-api-image-download

7604-filter-modifiers

19275-fixes-interface-bulk-edit

fix-17794-get_field_value_return_list

11507-show-aggregate-and-rir-on-api

9583-add_column_specific_search_field_to_tables

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Reference: github/netbox#1293