Fixes #9501 - Add configuration option JINJA2_FILTERS

docs/configuration/optional-settings.md

@@ -255,6 +255,20 @@ HTTP_PROXIES = {
 
 ---
 
+## JINJA2_FILTERS
+
+Default: `{}`
+
+A dictionary of custom jinja2 filters with the key being the filter name and the value being a callable. For more information see the [jinja2 documentation](https://jinja.palletsprojects.com/en/3.1.x/api/#custom-filters). For example:
+
+```python
+JINJA2_FILTERS = {
+    'uppercase': uppercase,
+}
+```
+
+---
+
 ## INTERNAL_IPS
 
 Default: `('127.0.0.1', '::1')`

netbox/netbox/settings.py

@@ -96,6 +96,7 @@
 FIELD_CHOICES = getattr(configuration, 'FIELD_CHOICES', {})
 HTTP_PROXIES = getattr(configuration, 'HTTP_PROXIES', None)
 INTERNAL_IPS = getattr(configuration, 'INTERNAL_IPS', ('127.0.0.1', '::1'))
+JINJA2_FILTERS = getattr(configuration, 'JINJA2_FILTERS', {})
 LOGGING = getattr(configuration, 'LOGGING', {})
 LOGIN_PERSISTENCE = getattr(configuration, 'LOGIN_PERSISTENCE', False)
 LOGIN_REQUIRED = getattr(configuration, 'LOGIN_REQUIRED', False)

netbox/utilities/utils.py

@@ -14,6 +14,7 @@
 from dcim.choices import CableLengthUnitChoices
 from extras.plugins import PluginConfig
 from extras.utils import is_taggable
+from netbox.config import get_config
 from utilities.constants import HTTP_REQUEST_META_SAFE_COPY
 
 
@@ -257,7 +258,9 @@ def render_jinja2(template_code, context):
     """
     Render a Jinja2 template with the provided context. Return the rendered content.
     """
-    return SandboxedEnvironment().from_string(source=template_code).render(**context)
+    environment = SandboxedEnvironment()
+    environment.filters.update(get_config().JINJA2_FILTERS)
+    return environment.from_string(source=template_code).render(**context)
 
 
 def prepare_cloned_fields(instance):