changelog extension model v1

netbox_changelog_diff_plugin/commands.py

@@ -0,0 +1,47 @@
+from django.core.management.base import BaseCommand
+from extras.models import ObjectChange
+from .models import ChangeLogSummary
+
+class Command(BaseCommand):
+    help = 'Creates ChangeLogSummary objects for ObjectChanges that do not have one'
+
+    def handle(self, *args, **options):
+        # Get all ObjectChanges that don't have a summary and have action='update'
+        object_changes = ObjectChange.objects.filter(
+            action='update'
+        ).exclude(
+            id__in=ChangeLogSummary.objects.values_list('changelog_id', flat=True)
+        )
+
+        count = 0
+        for change in object_changes:
+            summary = []
+            if change.prechange_data and change.postchange_data:
+                pre_keys = set(change.prechange_data.keys())
+                post_keys = set(change.postchange_data.keys())
+
+                # Find added keys
+                added_keys = post_keys - pre_keys
+                for key in added_keys:
+                    summary.append(f"Added {key}")
+
+                # Find removed keys
+                removed_keys = pre_keys - post_keys
+                for key in removed_keys:
+                    summary.append(f"Removed {key}")
+
+                # Check for updated values in common keys
+                common_keys = pre_keys & post_keys
+                for key in common_keys:
+                    if change.prechange_data[key] != change.postchange_data[key]:
+                        summary.append(f"Updated {key}")
+
+            ChangeLogSummary.objects.create(
+                changelog=change,
+                summary=", ".join(summary) if summary else "No changes detected"
+            )
+            count += 1
+
+        self.stdout.write(
+            self.style.SUCCESS(f'Successfully created {count} new changelog summaries')
+        )

netbox_changelog_diff_plugin/models.py

@@ -1,3 +1,27 @@
 from django.db import models
 from django.urls import reverse
 from netbox.models import NetBoxModel
+
+class ChangeLogSummary(NetBoxModel):
+    """Model to store human-readable summaries of changelogs"""
+
+    changelog = models.ForeignKey(
+        to='extras.ObjectChange',
+        on_delete=models.CASCADE,
+        related_name='summaries'
+    )
+
+    summary = models.TextField(
+        help_text="Human readable summary of the changes made"
+    )
+
+    class Meta:
+        verbose_name = "Changelog Summary"
+        verbose_name_plural = "Changelog Summaries"
+        ordering = ['-changelog__time']
+
+    def __str__(self):
+        return f"Summary for change {self.changelog.id}"
+
+    def get_absolute_url(self):
+        return reverse('plugins:netbox_changelog_diff_plugin:changelogsummary', args=[self.pk])