#20048 action_url template tag

netbox/templates/extras/journalentry.html

@@ -5,7 +5,7 @@
 
 {% block breadcrumbs %}
   {{ block.super }}
-  <li class="breadcrumb-item"><a href="{% url object.assigned_object|viewname:'journal' pk=object.assigned_object.pk %}">{{ object.assigned_object }}</a></li>
+  <li class="breadcrumb-item"><a href="{% action_url object.assigned_object 'journal' pk=object.assigned_object.pk %}">{{ object.assigned_object }}</a></li>
 {% endblock %}
 
 {% block content %}

netbox/utilities/templatetags/helpers.py

@@ -4,10 +4,11 @@ from urllib.parse import quote
 
 from django import template
 from django.urls import NoReverseMatch, reverse
+from django.utils.html import conditional_escape
 
 from core.models import ObjectType
 from utilities.forms import get_selected_values, TableConfigForm
-from utilities.views import get_viewname
+from utilities.views import get_viewname, get_action_url
 from netbox.settings import DISK_BASE_UNIT, RAM_BASE_UNIT
 
 __all__ = (
@@ -63,6 +64,125 @@ def validated_viewname(model, action):
         return None
 
 
+@register.tag
+def action_url(parser, token):
+    """
+    Return an absolute URL matching the given model and action.
+
+    This is a way to define links that aren't tied to a particular URL
+    configuration::
+
+        {% action_url model "action_name" %}
+
+        or
+
+        {% action_url model "action_name" pk=object.pk %}
+
+        or
+
+        {% action_url model "action_name" pk=object.pk as variable_name %}
+
+    The first argument is a model instance. The second argument is the action name.
+    Additional keyword arguments can be passed for URL parameters.
+
+    For example, if you have a Device model and want to link to its edit action::
+
+        {% action_url device "edit" %}
+
+    This will generate a URL like ``/dcim/devices/123/edit/``.
+
+    You can also pass additional parameters::
+
+        {% action_url device "journal" pk=device.pk %}
+
+    Or assign the URL to a variable::
+
+        {% action_url device "edit" as edit_url %}
+    """
+
+    class ActionURLNode(template.Node):
+        """Template node for the {% action_url %} template tag."""
+
+        child_nodelists = ()
+
+        def __init__(self, model, action, kwargs, asvar=None):
+            self.model = model
+            self.action = action
+            self.kwargs = kwargs
+            self.asvar = asvar
+
+        def __repr__(self):
+            return (
+                f"<{self.__class__.__qualname__} "
+                f"model='{self.model}' "
+                f"action='{self.action}' "
+                f"kwargs={repr(self.kwargs)} "
+                f"as={repr(self.asvar)}>"
+            )
+
+        def render(self, context):
+            """
+            Render the action URL node.
+
+            Args:
+                context: The template context
+
+            Returns:
+                The resolved URL or empty string if using 'as' syntax
+
+            Raises:
+                NoReverseMatch: If the URL cannot be resolved and not using 'as' syntax
+            """
+            # Resolve model and kwargs from context
+            model = self.model.resolve(context)
+            kwargs = {k: v.resolve(context) for k, v in self.kwargs.items()}
+
+            # Get the action URL using the utility function
+            try:
+                url = get_action_url(model, action=self.action, kwargs=kwargs)
+            except NoReverseMatch:
+                if self.asvar is None:
+                    raise
+                url = ""
+
+            # Handle variable assignment or return escaped URL
+            if self.asvar:
+                context[self.asvar] = url
+                return ""
+
+            return conditional_escape(url) if context.autoescape else url
+
+    # Parse the token contents
+    bits = token.split_contents()
+    if len(bits) < 3:
+        raise template.TemplateSyntaxError(
+            f"'{bits[0]}' takes at least two arguments, a model and an action."
+        )
+
+    # Extract model and action
+    model = parser.compile_filter(bits[1])
+    action = bits[2].strip('"\'')  # Remove quotes from literal string
+    kwargs = {}
+    asvar = None
+    bits = bits[3:]
+
+    # Handle 'as' syntax for variable assignment
+    if len(bits) >= 2 and bits[-2] == "as":
+        asvar = bits[-1]
+        bits = bits[:-2]
+
+    # Parse remaining arguments as kwargs
+    for bit in bits:
+        if '=' not in bit:
+            raise template.TemplateSyntaxError(
+                f"'{token.contents.split()[0]}' keyword arguments must be in the format 'name=value'"
+            )
+        name, value = bit.split('=', 1)
+        kwargs[name] = parser.compile_filter(value)
+
+    return ActionURLNode(model, action, kwargs, asvar)
+
+
 @register.filter()
 def humanize_speed(speed):
     """