Closes #4309: Add descriptive tooltip to custom fields on object views

docs/release-notes/version-2.7.md

@@ -2,11 +2,17 @@
 
 ## v2.7.11 (FUTURE)
 
+### Enhancements
+
+* [#4309](https://github.com/netbox-community/netbox/issues/4309) - Add descriptive tooltip to custom fields on object views
+
 ### Bug Fixes
 
 * [#4340](https://github.com/netbox-community/netbox/issues/4340) - Enforce unique constraints for device and virtual machine names in the API
 * [#4343](https://github.com/netbox-community/netbox/issues/4343) - Fix Markdown support for tables
 
+---
+
 ## v2.7.10 (2020-03-10)
 
 **Note:** If your deployment requires any non-core Python packages (such as `napalm`, `django-storages`, or `django-auth-ldap`), list them in a file named `local_requirements.txt` in the NetBox root directory (alongside `requirements.txt`). This will ensure they are detected and re-installed by the upgrade script when the Python virtual environment is rebuilt.

netbox/templates/inc/custom_fields_panel.html

@@ -7,7 +7,7 @@
             <table class="table table-hover panel-body attr-table">
                 {% for field, value in custom_fields.items %}
                     <tr>
-                        <td>{{ field }}</td>
+                        <td><span title="{{ field.description }}">{{ field }}</span></td>
                         <td>
                             {% if field.type == 'boolean' and value == True %}
                                 <i class="glyphicon glyphicon-ok text-success" title="True"></i>