Initial work on predefined choices for custom fields

docs/models/extras/customfieldchoiceset.md

@@ -8,9 +8,16 @@ Single- and multi-selection [custom fields documentation](../../customization/cu
 
 The human-friendly name of the choice set.
 
+### Base Choices
+
+The set of pre-defined choices to include. Available sets are listed below. This is an optional setting.
+
+* ISO 3166 - Two-letter country codes
+* UN/LOCODE - Five-character location identifiers
+
 ### Extra Choices
 
-The list of valid choices, entered as a comma-separated list.
+A list of additional choices, one per line.
 
 ### Order Alphabetically
 

netbox/extras/api/serializers.py

@@ -135,8 +135,8 @@ class CustomFieldChoiceSetSerializer(ValidatedModelSerializer):
     class Meta:
         model = CustomFieldChoiceSet
         fields = [
-            'id', 'url', 'display', 'name', 'description', 'extra_choices', 'order_alphabetically', 'choices_count',
+            'id', 'url', 'display', 'name', 'description', 'base_choices', 'extra_choices', 'order_alphabetically',
-            'created', 'last_updated',
+            'choices_count', 'created', 'last_updated',
         ]
 
 

netbox/extras/api/views.py

@@ -1,5 +1,6 @@
 from django.contrib.contenttypes.models import ContentType
 from django.http import Http404
+from django.shortcuts import get_object_or_404
 from django_rq.queues import get_connection
 from rest_framework import status
 from rest_framework.decorators import action
@@ -64,6 +65,29 @@ class CustomFieldChoiceSetViewSet(NetBoxModelViewSet):
     serializer_class = serializers.CustomFieldChoiceSetSerializer
     filterset_class = filtersets.CustomFieldChoiceSetFilterSet
 
+    @action(detail=True)
+    def choices(self, request, pk):
+        """
+        Provides an endpoint to iterate through each choice in a set.
+        """
+        choiceset = get_object_or_404(self.queryset, pk=pk)
+        choices = choiceset.choices
+
+        # Enable filtering
+        if q := request.GET.get('q'):
+            q = q.lower()
+            choices = [c for c in choices if q in c[0].lower() or q in c[1].lower()]
+
+        page = self.paginate_queryset(choices)
+        if page is not None:
+            data = [
+                {
+                    'id': c[0],
+                    'display': c[1],
+                } for c in page
+            ]
+            return self.get_paginated_response(data)
+
 
 #
 # Custom links

netbox/extras/choices.py

@@ -66,6 +66,17 @@ class CustomFieldVisibilityChoices(ChoiceSet):
     )
 
 
+class CustomFieldChoiceSetBaseChoices(ChoiceSet):
+
+    ISO_3166 = 'ISO_3166'
+    UN_LOCODE = 'UN_LOCODE'
+
+    CHOICES = (
+        (ISO_3166, 'ISO 3166'),
+        (UN_LOCODE, 'UN/LOCODE'),
+    )
+
+
 #
 # CustomLinks
 #

netbox/extras/data/__init__.py

@@ -0,0 +1,7 @@
+from .iso_3166 import ISO_3166
+from .un_locode import UN_LOCODE
+
+CHOICE_SETS = {
+    'ISO_3166': ISO_3166,
+    'UN_LOCODE': UN_LOCODE,
+}

netbox/extras/data/iso_3166.py

@@ -0,0 +1,253 @@
+# Two-letter country codes defined by ISO 3166
+# Source: https://datahub.io/core/country-list
+ISO_3166 = [
+    ('AD', 'AD (Andorra)'),
+    ('AE', 'AE (United Arab Emirates)'),
+    ('AF', 'AF (Afghanistan)'),
+    ('AG', 'AG (Antigua and Barbuda)'),
+    ('AI', 'AI (Anguilla)'),
+    ('AL', 'AL (Albania)'),
+    ('AM', 'AM (Armenia)'),
+    ('AO', 'AO (Angola)'),
+    ('AQ', 'AQ (Antarctica)'),
+    ('AR', 'AR (Argentina)'),
+    ('AS', 'AS (American Samoa)'),
+    ('AT', 'AT (Austria)'),
+    ('AU', 'AU (Australia)'),
+    ('AW', 'AW (Aruba)'),
+    ('AX', 'AX (Åland Islands)'),
+    ('AZ', 'AZ (Azerbaijan)'),
+    ('BA', 'BA (Bosnia and Herzegovina)'),
+    ('BB', 'BB (Barbados)'),
+    ('BD', 'BD (Bangladesh)'),
+    ('BE', 'BE (Belgium)'),
+    ('BF', 'BF (Burkina Faso)'),
+    ('BG', 'BG (Bulgaria)'),
+    ('BH', 'BH (Bahrain)'),
+    ('BI', 'BI (Burundi)'),
+    ('BJ', 'BJ (Benin)'),
+    ('BL', 'BL (Saint Barthélemy)'),
+    ('BM', 'BM (Bermuda)'),
+    ('BN', 'BN (Brunei Darussalam)'),
+    ('BO', 'BO (Bolivia, Plurinational State of)'),
+    ('BQ', 'BQ (Bonaire, Sint Eustatius and Saba)'),
+    ('BR', 'BR (Brazil)'),
+    ('BS', 'BS (Bahamas)'),
+    ('BT', 'BT (Bhutan)'),
+    ('BV', 'BV (Bouvet Island)'),
+    ('BW', 'BW (Botswana)'),
+    ('BY', 'BY (Belarus)'),
+    ('BZ', 'BZ (Belize)'),
+    ('CA', 'CA (Canada)'),
+    ('CC', 'CC (Cocos (Keeling) Islands)'),
+    ('CD', 'CD (Congo, the Democratic Republic of the)'),
+    ('CF', 'CF (Central African Republic)'),
+    ('CG', 'CG (Congo)'),
+    ('CH', 'CH (Switzerland)'),
+    ('CI', "CI (Côte d'Ivoire)"),
+    ('CK', 'CK (Cook Islands)'),
+    ('CL', 'CL (Chile)'),
+    ('CM', 'CM (Cameroon)'),
+    ('CN', 'CN (China)'),
+    ('CO', 'CO (Colombia)'),
+    ('CR', 'CR (Costa Rica)'),
+    ('CU', 'CU (Cuba)'),
+    ('CV', 'CV (Cape Verde)'),
+    ('CW', 'CW (Curaçao)'),
+    ('CX', 'CX (Christmas Island)'),
+    ('CY', 'CY (Cyprus)'),
+    ('CZ', 'CZ (Czech Republic)'),
+    ('DE', 'DE (Germany)'),
+    ('DJ', 'DJ (Djibouti)'),
+    ('DK', 'DK (Denmark)'),
+    ('DM', 'DM (Dominica)'),
+    ('DO', 'DO (Dominican Republic)'),
+    ('DZ', 'DZ (Algeria)'),
+    ('EC', 'EC (Ecuador)'),
+    ('EE', 'EE (Estonia)'),
+    ('EG', 'EG (Egypt)'),
+    ('EH', 'EH (Western Sahara)'),
+    ('ER', 'ER (Eritrea)'),
+    ('ES', 'ES (Spain)'),
+    ('ET', 'ET (Ethiopia)'),
+    ('FI', 'FI (Finland)'),
+    ('FJ', 'FJ (Fiji)'),
+    ('FK', 'FK (Falkland Islands (Malvinas))'),
+    ('FM', 'FM (Micronesia, Federated States of)'),
+    ('FO', 'FO (Faroe Islands)'),
+    ('FR', 'FR (France)'),
+    ('GA', 'GA (Gabon)'),
+    ('GB', 'GB (United Kingdom)'),
+    ('GD', 'GD (Grenada)'),
+    ('GE', 'GE (Georgia)'),
+    ('GF', 'GF (French Guiana)'),
+    ('GG', 'GG (Guernsey)'),
+    ('GH', 'GH (Ghana)'),
+    ('GI', 'GI (Gibraltar)'),
+    ('GL', 'GL (Greenland)'),
+    ('GM', 'GM (Gambia)'),
+    ('GN', 'GN (Guinea)'),
+    ('GP', 'GP (Guadeloupe)'),
+    ('GQ', 'GQ (Equatorial Guinea)'),
+    ('GR', 'GR (Greece)'),
+    ('GS', 'GS (South Georgia and the South Sandwich Islands)'),
+    ('GT', 'GT (Guatemala)'),
+    ('GU', 'GU (Guam)'),
+    ('GW', 'GW (Guinea-Bissau)'),
+    ('GY', 'GY (Guyana)'),
+    ('HK', 'HK (Hong Kong)'),
+    ('HM', 'HM (Heard Island and McDonald Islands)'),
+    ('HN', 'HN (Honduras)'),
+    ('HR', 'HR (Croatia)'),
+    ('HT', 'HT (Haiti)'),
+    ('HU', 'HU (Hungary)'),
+    ('ID', 'ID (Indonesia)'),
+    ('IE', 'IE (Ireland)'),
+    ('IL', 'IL (Israel)'),
+    ('IM', 'IM (Isle of Man)'),
+    ('IN', 'IN (India)'),
+    ('IO', 'IO (British Indian Ocean Territory)'),
+    ('IQ', 'IQ (Iraq)'),
+    ('IR', 'IR (Iran, Islamic Republic of)'),
+    ('IS', 'IS (Iceland)'),
+    ('IT', 'IT (Italy)'),
+    ('JE', 'JE (Jersey)'),
+    ('JM', 'JM (Jamaica)'),
+    ('JO', 'JO (Jordan)'),
+    ('JP', 'JP (Japan)'),
+    ('KE', 'KE (Kenya)'),
+    ('KG', 'KG (Kyrgyzstan)'),
+    ('KH', 'KH (Cambodia)'),
+    ('KI', 'KI (Kiribati)'),
+    ('KM', 'KM (Comoros)'),
+    ('KN', 'KN (Saint Kitts and Nevis)'),
+    ('KP', "KP (Korea, Democratic People's Republic of)"),
+    ('KR', 'KR (Korea, Republic of)'),
+    ('KW', 'KW (Kuwait)'),
+    ('KY', 'KY (Cayman Islands)'),
+    ('KZ', 'KZ (Kazakhstan)'),
+    ('LA', "LA (Lao People's Democratic Republic)"),
+    ('LB', 'LB (Lebanon)'),
+    ('LC', 'LC (Saint Lucia)'),
+    ('LI', 'LI (Liechtenstein)'),
+    ('LK', 'LK (Sri Lanka)'),
+    ('LR', 'LR (Liberia)'),
+    ('LS', 'LS (Lesotho)'),
+    ('LT', 'LT (Lithuania)'),
+    ('LU', 'LU (Luxembourg)'),
+    ('LV', 'LV (Latvia)'),
+    ('LY', 'LY (Libya)'),
+    ('MA', 'MA (Morocco)'),
+    ('MC', 'MC (Monaco)'),
+    ('MD', 'MD (Moldova, Republic of)'),
+    ('ME', 'ME (Montenegro)'),
+    ('MF', 'MF (Saint Martin (French part))'),
+    ('MG', 'MG (Madagascar)'),
+    ('MH', 'MH (Marshall Islands)'),
+    ('MK', 'MK (Macedonia, the Former Yugoslav Republic of)'),
+    ('ML', 'ML (Mali)'),
+    ('MM', 'MM (Myanmar)'),
+    ('MN', 'MN (Mongolia)'),
+    ('MO', 'MO (Macao)'),
+    ('MP', 'MP (Northern Mariana Islands)'),
+    ('MQ', 'MQ (Martinique)'),
+    ('MR', 'MR (Mauritania)'),
+    ('MS', 'MS (Montserrat)'),
+    ('MT', 'MT (Malta)'),
+    ('MU', 'MU (Mauritius)'),
+    ('MV', 'MV (Maldives)'),
+    ('MW', 'MW (Malawi)'),
+    ('MX', 'MX (Mexico)'),
+    ('MY', 'MY (Malaysia)'),
+    ('MZ', 'MZ (Mozambique)'),
+    ('NA', 'NA (Namibia)'),
+    ('NC', 'NC (New Caledonia)'),
+    ('NE', 'NE (Niger)'),
+    ('NF', 'NF (Norfolk Island)'),
+    ('NG', 'NG (Nigeria)'),
+    ('NI', 'NI (Nicaragua)'),
+    ('NL', 'NL (Netherlands)'),
+    ('NO', 'NO (Norway)'),
+    ('NP', 'NP (Nepal)'),
+    ('NR', 'NR (Nauru)'),
+    ('NU', 'NU (Niue)'),
+    ('NZ', 'NZ (New Zealand)'),
+    ('OM', 'OM (Oman)'),
+    ('PA', 'PA (Panama)'),
+    ('PE', 'PE (Peru)'),
+    ('PF', 'PF (French Polynesia)'),
+    ('PG', 'PG (Papua New Guinea)'),
+    ('PH', 'PH (Philippines)'),
+    ('PK', 'PK (Pakistan)'),
+    ('PL', 'PL (Poland)'),
+    ('PM', 'PM (Saint Pierre and Miquelon)'),
+    ('PN', 'PN (Pitcairn)'),
+    ('PR', 'PR (Puerto Rico)'),
+    ('PS', 'PS (Palestine, State of)'),
+    ('PT', 'PT (Portugal)'),
+    ('PW', 'PW (Palau)'),
+    ('PY', 'PY (Paraguay)'),
+    ('QA', 'QA (Qatar)'),
+    ('RE', 'RE (Réunion)'),
+    ('RO', 'RO (Romania)'),
+    ('RS', 'RS (Serbia)'),
+    ('RU', 'RU (Russian Federation)'),
+    ('RW', 'RW (Rwanda)'),
+    ('SA', 'SA (Saudi Arabia)'),
+    ('SB', 'SB (Solomon Islands)'),
+    ('SC', 'SC (Seychelles)'),
+    ('SD', 'SD (Sudan)'),
+    ('SE', 'SE (Sweden)'),
+    ('SG', 'SG (Singapore)'),
+    ('SH', 'SH (Saint Helena, Ascension and Tristan da Cunha)'),
+    ('SI', 'SI (Slovenia)'),
+    ('SJ', 'SJ (Svalbard and Jan Mayen)'),
+    ('SK', 'SK (Slovakia)'),
+    ('SL', 'SL (Sierra Leone)'),
+    ('SM', 'SM (San Marino)'),
+    ('SN', 'SN (Senegal)'),
+    ('SO', 'SO (Somalia)'),
+    ('SR', 'SR (Suriname)'),
+    ('SS', 'SS (South Sudan)'),
+    ('ST', 'ST (Sao Tome and Principe)'),
+    ('SV', 'SV (El Salvador)'),
+    ('SX', 'SX (Sint Maarten (Dutch part))'),
+    ('SY', 'SY (Syrian Arab Republic)'),
+    ('SZ', 'SZ (Swaziland)'),
+    ('TC', 'TC (Turks and Caicos Islands)'),
+    ('TD', 'TD (Chad)'),
+    ('TF', 'TF (French Southern Territories)'),
+    ('TG', 'TG (Togo)'),
+    ('TH', 'TH (Thailand)'),
+    ('TJ', 'TJ (Tajikistan)'),
+    ('TK', 'TK (Tokelau)'),
+    ('TL', 'TL (Timor-Leste)'),
+    ('TM', 'TM (Turkmenistan)'),
+    ('TN', 'TN (Tunisia)'),
+    ('TO', 'TO (Tonga)'),
+    ('TR', 'TR (Turkey)'),
+    ('TT', 'TT (Trinidad and Tobago)'),
+    ('TV', 'TV (Tuvalu)'),
+    ('TW', 'TW (Taiwan, Province of China)'),
+    ('TZ', 'TZ (Tanzania, United Republic of)'),
+    ('UA', 'UA (Ukraine)'),
+    ('UG', 'UG (Uganda)'),
+    ('UM', 'UM (United States Minor Outlying Islands)'),
+    ('US', 'US (United States)'),
+    ('UY', 'UY (Uruguay)'),
+    ('UZ', 'UZ (Uzbekistan)'),
+    ('VA', 'VA (Holy See (Vatican City State))'),
+    ('VC', 'VC (Saint Vincent and the Grenadines)'),
+    ('VE', 'VE (Venezuela, Bolivarian Republic of)'),
+    ('VG', 'VG (Virgin Islands, British)'),
+    ('VI', 'VI (Virgin Islands, U.S.)'),
+    ('VN', 'VN (Viet Nam)'),
+    ('VU', 'VU (Vanuatu)'),
+    ('WF', 'WF (Wallis and Futuna)'),
+    ('WS', 'WS (Samoa)'),
+    ('YE', 'YE (Yemen)'),
+    ('YT', 'YT (Mayotte)'),
+    ('ZA', 'ZA (South Africa)'),
+    ('ZM', 'ZM (Zambia)'),
+    ('ZW', 'ZW (Zimbabwe)')
+]

netbox/extras/filtersets.py

@@ -114,7 +114,7 @@ class CustomFieldChoiceSetFilterSet(BaseFilterSet):
     class Meta:
         model = CustomFieldChoiceSet
         fields = [
-            'id', 'name', 'description', 'order_alphabetically',
+            'id', 'name', 'description', 'base_choices', 'order_alphabetically',
         ]
 
     def search(self, queryset, name, value):

netbox/extras/forms/bulk_edit.py

@@ -62,6 +62,10 @@ class CustomFieldChoiceSetBulkEditForm(BulkEditForm):
         queryset=CustomFieldChoiceSet.objects.all(),
         widget=forms.MultipleHiddenInput
     )
+    base_choices = forms.ChoiceField(
+        choices=add_blank_choice(CustomFieldChoiceSetBaseChoices),
+        required=False
+    )
     description = forms.CharField(
         required=False
     )
@@ -70,7 +74,7 @@ class CustomFieldChoiceSetBulkEditForm(BulkEditForm):
         widget=BulkEditNullBooleanSelect()
     )
 
-    nullable_fields = ('description',)
+    nullable_fields = ('base_choices', 'description')
 
 
 class CustomLinkBulkEditForm(BulkEditForm):

netbox/extras/forms/bulk_import.py

@@ -4,7 +4,7 @@ from django.contrib.postgres.forms import SimpleArrayField
 from django.utils.safestring import mark_safe
 from django.utils.translation import gettext as _
 
-from extras.choices import CustomFieldVisibilityChoices, CustomFieldTypeChoices, JournalEntryKindChoices
+from extras.choices import *
 from extras.models import *
 from extras.utils import FeatureQuery
 from netbox.forms import NetBoxModelImportForm
@@ -63,6 +63,11 @@ class CustomFieldImportForm(CSVModelForm):
 
 
 class CustomFieldChoiceSetImportForm(CSVModelForm):
+    base_choices = CSVChoiceField(
+        choices=CustomFieldChoiceSetBaseChoices,
+        required=False,
+        help_text=_('The classification of entry')
+    )
     extra_choices = SimpleArrayField(
         base_field=forms.CharField(),
         required=False,

netbox/extras/forms/filtersets.py

@@ -84,7 +84,12 @@ class CustomFieldFilterForm(SavedFiltersMixin, FilterForm):
 
 class CustomFieldChoiceSetFilterForm(SavedFiltersMixin, FilterForm):
     fieldsets = (
-        (None, ('q', 'filter_id', 'choice')),
+        (None, ('q', 'filter_id')),
+        ('Choices', ('base_choices', 'choice')),
+    )
+    base_choices = forms.MultipleChoiceField(
+        choices=CustomFieldChoiceSetBaseChoices,
+        required=False
     )
     choice = forms.CharField(
         required=False

netbox/extras/forms/model_forms.py

@@ -87,12 +87,13 @@ class CustomFieldForm(BootstrapMixin, forms.ModelForm):
 class CustomFieldChoiceSetForm(BootstrapMixin, forms.ModelForm):
     extra_choices = forms.CharField(
         widget=ArrayWidget(),
+        required=False,
         help_text=_('Enter one choice per line.')
     )
 
     class Meta:
         model = CustomFieldChoiceSet
-        fields = ('name', 'description', 'extra_choices', 'order_alphabetically')
+        fields = ('name', 'description', 'base_choices', 'extra_choices', 'order_alphabetically')
 
     def clean_extra_choices(self):
         return self.cleaned_data['extra_choices'].splitlines()

netbox/extras/migrations/0098_customfieldchoiceset_add_base_choices.py

@@ -0,0 +1,24 @@
+# Generated by Django 4.1.10 on 2023-07-18 13:56
+
+import django.contrib.postgres.fields
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('extras', '0097_customfield_remove_choices'),
+    ]
+
+    operations = [
+        migrations.AddField(
+            model_name='customfieldchoiceset',
+            name='base_choices',
+            field=models.CharField(blank=True, max_length=50),
+        ),
+        migrations.AlterField(
+            model_name='customfieldchoiceset',
+            name='extra_choices',
+            field=django.contrib.postgres.fields.ArrayField(base_field=models.CharField(max_length=100), blank=True, null=True, size=None),
+        ),
+    ]

netbox/extras/models/customfields.py

@@ -15,17 +15,18 @@ from django.utils.safestring import mark_safe
 from django.utils.translation import gettext as _
 
 from extras.choices import *
+from extras.data import CHOICE_SETS
 from extras.utils import FeatureQuery
 from netbox.models import ChangeLoggedModel
 from netbox.models.features import CloningMixin, ExportTemplatesMixin
 from netbox.search import FieldTypes
 from utilities import filters
 from utilities.forms.fields import (
-    CSVChoiceField, CSVModelChoiceField, CSVModelMultipleChoiceField, CSVMultipleChoiceField, DynamicModelChoiceField,
+    CSVChoiceField, CSVModelChoiceField, CSVModelMultipleChoiceField, CSVMultipleChoiceField, DynamicChoiceField,
-    DynamicModelMultipleChoiceField, JSONField, LaxURLField,
+    DynamicModelChoiceField, DynamicModelMultipleChoiceField, DynamicMultipleChoiceField, JSONField, LaxURLField,
 )
 from utilities.forms.utils import add_blank_choice
-from utilities.forms.widgets import DatePicker, DateTimePicker
+from utilities.forms.widgets import APISelect, APISelectMultiple, DatePicker, DateTimePicker
 from utilities.querysets import RestrictedQuerySet
 from utilities.validators import validate_regex
 
@@ -410,7 +411,7 @@ class CustomField(CloningMixin, ExportTemplatesMixin, ChangeLoggedModel):
 
         # Select
         elif self.type in (CustomFieldTypeChoices.TYPE_SELECT, CustomFieldTypeChoices.TYPE_MULTISELECT):
-            choices = [(c, c) for c in self.choices]
+            choices = self.choices
             default_choice = self.default if self.default in self.choices else None
 
             if not required or default_choice is None:
@@ -421,11 +422,17 @@ class CustomField(CloningMixin, ExportTemplatesMixin, ChangeLoggedModel):
                 initial = default_choice
 
             if self.type == CustomFieldTypeChoices.TYPE_SELECT:
-                field_class = CSVChoiceField if for_csv_import else forms.ChoiceField
+                field_class = CSVChoiceField if for_csv_import else DynamicChoiceField
-                field = field_class(choices=choices, required=required, initial=initial)
+                widget_class = APISelect
             else:
-                field_class = CSVMultipleChoiceField if for_csv_import else forms.MultipleChoiceField
+                field_class = CSVMultipleChoiceField if for_csv_import else DynamicMultipleChoiceField
-                field = field_class(choices=choices, required=required, initial=initial)
+                widget_class = APISelectMultiple
+            field = field_class(
+                choices=self.choice_set.choices,
+                required=required,
+                initial=initial,
+                widget=widget_class(api_url=f'/api/extras/custom-field-choices/{self.choice_set.pk}/choices/')
+            )
 
         # URL
         elif self.type == CustomFieldTypeChoices.TYPE_URL:
@@ -604,14 +611,14 @@ class CustomField(CloningMixin, ExportTemplatesMixin, ChangeLoggedModel):
 
             # Validate selected choice
             elif self.type == CustomFieldTypeChoices.TYPE_SELECT:
-                if value not in self.choices:
+                if value not in [c[0] for c in self.choices]:
                     raise ValidationError(
                         f"Invalid choice ({value}). Available choices are: {', '.join(self.choices)}"
                     )
 
             # Validate all selected choices
             elif self.type == CustomFieldTypeChoices.TYPE_MULTISELECT:
-                if not set(value).issubset(self.choices):
+                if not set(value).issubset([c[0] for c in self.choices]):
                     raise ValidationError(
                         f"Invalid choice(s) ({', '.join(value)}). Available choices are: {', '.join(self.choices)}"
                     )
@@ -645,9 +652,17 @@ class CustomFieldChoiceSet(CloningMixin, ExportTemplatesMixin, ChangeLoggedModel
         max_length=200,
         blank=True
     )
+    base_choices = models.CharField(
+        max_length=50,
+        choices=CustomFieldChoiceSetBaseChoices,
+        blank=True,
+        help_text=_('Base set of predefined choices (optional)')
+    )
     extra_choices = ArrayField(
         base_field=models.CharField(max_length=100),
-        help_text=_('List of field choices')
+        help_text=_('List of field choices'),
+        blank=True,
+        null=True
     )
     order_alphabetically = models.BooleanField(
         default=False,
@@ -667,7 +682,20 @@ class CustomFieldChoiceSet(CloningMixin, ExportTemplatesMixin, ChangeLoggedModel
 
     @property
     def choices(self):
-        return self.extra_choices
+        """
+        Returns a concatenation of the base and extra choices.
+        """
+        if not hasattr(self, '_choices'):
+            self._choices = []
+            if self.base_choices:
+                self._choices.extend(CHOICE_SETS.get(self.base_choices))
+            if self.extra_choices:
+                self._choices.extend([(k, k) for k in self.extra_choices])
+        return self._choices
+
+    def clean(self):
+        if not self.base_choices and not self.extra_choices:
+            raise ValidationError(_("Must define base or extra choices."))
 
     @property
     def choices_count(self):

netbox/extras/tables/tables.py

@@ -87,11 +87,12 @@ class CustomFieldChoiceSetTable(NetBoxTable):
     name = tables.Column(
         linkify=True
     )
+    base_choices = columns.ChoiceFieldColumn()
     choices = columns.ArrayColumn(
         max_items=10,
         accessor=tables.A('extra_choices'),
         orderable=False,
-        verbose_name=_('Choices')
+        verbose_name=_('Count')
     )
     choice_count = tables.TemplateColumn(
         accessor=tables.A('extra_choices'),
@@ -104,10 +105,10 @@ class CustomFieldChoiceSetTable(NetBoxTable):
     class Meta(NetBoxTable.Meta):
         model = CustomFieldChoiceSet
         fields = (
-            'pk', 'id', 'name', 'description', 'choice_count', 'choices', 'order_alphabetically', 'created',
+            'pk', 'id', 'name', 'description', 'base_choices', 'choice_count', 'choices', 'order_alphabetically',
-            'last_updated',
+            'created', 'last_updated',
         )
-        default_columns = ('pk', 'name', 'choice_count', 'description')
+        default_columns = ('pk', 'name', 'base_choices', 'choice_count', 'description')
 
 
 class CustomLinkTable(NetBoxTable):

netbox/templates/extras/customfieldchoiceset.html

@@ -17,6 +17,10 @@
               <th scope="row">Description</th>
               <td>{{ object.description|markdown|placeholder }}</td>
             </tr>
+            <tr>
+              <th scope="row">Base Choices</th>
+              <td>{{ object.get_base_choices_display }}</td>
+            </tr>
             <tr>
               <th scope="row">Choices</th>
               <td>{{ object.choices|length }}</td>

netbox/utilities/forms/fields/dynamic.py

@@ -8,11 +8,49 @@ from utilities.forms import widgets
 from utilities.utils import get_viewname
 
 __all__ = (
+    'DynamicChoiceField',
     'DynamicModelChoiceField',
     'DynamicModelMultipleChoiceField',
+    'DynamicMultipleChoiceField',
 )
 
 
+#
+# Choice fields
+#
+
+class DynamicChoiceField(forms.ChoiceField):
+
+    def get_bound_field(self, form, field_name):
+        bound_field = BoundField(form, self, field_name)
+        data = bound_field.value()
+
+        if data is not None:
+            self.choices = [
+                choice for choice in self.choices if choice[0] == data
+            ]
+
+        return bound_field
+
+
+class DynamicMultipleChoiceField(forms.MultipleChoiceField):
+
+    def get_bound_field(self, form, field_name):
+        bound_field = BoundField(form, self, field_name)
+        data = bound_field.value()
+
+        if data is not None:
+            self.choices = [
+                choice for choice in self.choices if choice[0] in data
+            ]
+
+        return bound_field
+
+
+#
+# Model choice fields
+#
+
 class DynamicModelChoiceMixin:
     """
     Override `get_bound_field()` to avoid pre-populating field choices with a SQL query. The field will be