15873 - Make Cluster resource counters more readable (#15900)

* Created "convert_byte_size" method to convert the memory and disk size according to unit informed.
Changed "get_extra_context" method from "ClusterView" to use the method above and convert all the disks and memories from VMs to normalize the units.

* Changed decimal size for memory_sum and disk_sum

* Added test for convert_byte_size.

* Fixed

* Addressed PR comments.
Changed humanize_megabytes in helpers.py

* Addressed PR comments.
Changed humanize_megabytes in helpers.py

* Linter issues for helpers.py

* Changed humanize_megabytes

* Changed humanize_megabytes

* Changed humanize_megabytes

* Added the title to display the value in MB when mouseover.

* Addressed PR comment.

* Addressed PR comment.

* Rewrite sizing logic

---------

Co-authored-by: Jeremy Stretch <jstretch@netboxlabs.com>

netbox/templates/virtualization/cluster.html

@@ -59,7 +59,7 @@
               <th scope="row"><i class="mdi mdi-chip"></i> {% trans "Memory" %}</th>
               <td>
                   {% if memory_sum %}
-                      {{ memory_sum|humanize_megabytes }}
+                      <span title={{ memory_sum }}>{{ memory_sum|humanize_megabytes }}</span>
                   {% else %}
                       {{ ''|placeholder }}
                   {% endif %}

netbox/templates/virtualization/virtualmachine.html

@@ -125,7 +125,7 @@
                     <th scope="row"><i class="mdi mdi-chip"></i> {% trans "Memory" %}</th>
                     <td>
                         {% if object.memory %}
-                            {{ object.memory|humanize_megabytes }}
+                            <span title={{ object.memory }}>{{ object.memory|humanize_megabytes }}</span>
                         {% else %}
                             {{ ''|placeholder }}
                         {% endif %}

netbox/utilities/templatetags/helpers.py

@@ -1,14 +1,9 @@
-import datetime
 import json
 from typing import Dict, Any
 from urllib.parse import quote
 
 from django import template
-from django.conf import settings
-from django.template.defaultfilters import date
 from django.urls import NoReverseMatch, reverse
-from django.utils import timezone
-from django.utils.safestring import mark_safe
 
 from core.models import ObjectType
 from utilities.forms import get_selected_values, TableConfigForm
@@ -92,15 +87,22 @@ def humanize_speed(speed):
 @register.filter()
 def humanize_megabytes(mb):
     """
-    Express a number of megabytes in the most suitable unit (e.g. gigabytes or terabytes).
+    Express a number of megabytes in the most suitable unit (e.g. gigabytes, terabytes, etc.).
     """
     if not mb:
-        return ''
-    if not mb % 1048576:  # 1024^2
-        return f'{int(mb / 1048576)} TB'
-    if not mb % 1024:
-        return f'{int(mb / 1024)} GB'
-    return f'{mb} MB'
+        return ""
+
+    PB_SIZE = 1000000000
+    TB_SIZE = 1000000
+    GB_SIZE = 1000
+
+    if mb >= PB_SIZE:
+        return f"{mb / PB_SIZE:.2f} PB"
+    if mb >= TB_SIZE:
+        return f"{mb / TB_SIZE:.2f} TB"
+    if mb >= GB_SIZE:
+        return f"{mb / GB_SIZE:.2f} GB"
+    return f"{mb} MB"
 
 
 @register.filter()