Introduce InlineFields for rendering fields side-by-side

netbox/utilities/forms/rendering.py

@@ -0,0 +1,10 @@
+__all__ = (
+    'InlineFields',
+)
+
+
+class InlineFields:
+
+    def __init__(self, *field_names, label=None):
+        self.field_names = field_names
+        self.label = label

netbox/utilities/templates/form_helpers/render_fieldset.html

@@ -0,0 +1,26 @@
+{% load i18n %}
+{% load form_helpers %}
+<div class="field-group mb-5">
+  {% if heading %}
+    <div class="row">
+      <h5 class="col-9 offset-3">{{ heading }}</h5>
+    </div>
+  {% endif %}
+  {% for layout, title, items in rows %}
+    {% if layout == 'field' %}
+      {# Single form field #}
+      {% render_field items.0 %}
+    {% elif layout == 'inline' %}
+      {# Multiple form fields on the same line #}
+      <div class="row mb-3">
+        <label class="col col-form-label text-lg-end">{{ title|default:'' }}</label>
+        {% for field in items %}
+          <div class="col mb-1">
+            {{ field }}
+            <div class="form-text">{% trans field.label %}</div>
+          </div>
+        {% endfor %}
+      </div>
+    {% endif %}
+  {% endfor %}
+</div>

netbox/utilities/templatetags/form_helpers.py

@@ -1,5 +1,7 @@
 from django import template
 
+from utilities.forms.rendering import InlineFields
+
 __all__ = (
     'getfield',
     'render_custom_fields',
@@ -45,6 +47,28 @@ def widget_type(field):
 # Inclusion tags
 #
 
+@register.inclusion_tag('form_helpers/render_fieldset.html')
+def render_fieldset(form, fieldset, heading=None):
+    """
+    Render a group set of fields.
+    """
+    rows = []
+    for item in fieldset:
+        if type(item) is InlineFields:
+            rows.append(
+                ('inline', item.label, [form[name] for name in item.field_names])
+            )
+        else:
+            rows.append(
+                ('field', None, [form[item]])
+            )
+
+    return {
+        'heading': heading,
+        'rows': rows,
+    }
+
+
 @register.inclusion_tag('form_helpers/render_field.html')
 def render_field(field, bulk_nullable=False, label=None):
     """