Update Custom Fields Initializer for Netbox 2.7

The custom field database model has changed in Netbox 2.7.
Therefore the initializer code, that was used before, broke.
As a user, you will need to update your custom_fields.yml file as
follows:

- type must be lowercase
  - the `selection` type was changed to `select`
- the filter_logic must be lower case

This is to achieve compatibility with the naming schema that
Netbox uses internally. It allows us to become forward compatible
in case Netbox ever introduces a new type for custom fields.

See the diff of this commit for further information how this is meant.

initializers/custom_fields.yml

@@ -1,3 +1,18 @@
+## Possible Choices:
+##   type:
+##   - text
+##   - integer
+##   - boolean
+##   - date
+##   - url
+##   - select
+##   filter_logic:
+##   - disabled
+##   - loose
+##   - exact
+##
+## Examples:
+
 # text_field:
 #   type: text
 #   label: Custom Text
@@ -22,8 +37,8 @@
 #   weight: 10
 #   on_objects:
 #   - tenancy.models.Tenant
-# selection_field:
+# select_field:
-#   type: selection
+#   type: select
 #   label: Choose between items
 #   required: false
 #   filter_logic: exact
@@ -41,8 +56,8 @@
 #     weight: 50
 #   - value: Fourth Item
 #     weight: 40
-# selection_field_auto_weight:
+# select_field_auto_weight:
-#    type: selection
+#    type: select
 #    label: Choose between items
 #    required: false
 #    filter_logic: loose

startup_scripts/020_custom_fields.py

@@ -1,19 +1,9 @@
-from extras.constants import CF_TYPE_TEXT, CF_TYPE_INTEGER, CF_TYPE_BOOLEAN, CF_TYPE_DATE, CF_TYPE_URL, CF_TYPE_SELECT, CF_FILTER_CHOICES
 from extras.models import CustomField, CustomFieldChoice
 
 from ruamel.yaml import YAML
 from pathlib import Path
 import sys
 
-text_to_fields = {
-  'boolean': CF_TYPE_BOOLEAN,
-  'date': CF_TYPE_DATE,
-  'integer': CF_TYPE_INTEGER,
-  'selection': CF_TYPE_SELECT,
-  'text': CF_TYPE_TEXT,
-  'url': CF_TYPE_URL,
-}
-
 def get_class_for_class_path(class_path):
   import importlib
   from django.contrib.contenttypes.models import ContentType
@@ -42,12 +32,6 @@ with file.open('r') as stream:
         if cf_details.get('description', 0):
           custom_field.description = cf_details['description']
 
-        # If no filter_logic is specified then it will default to 'Loose'
-        if cf_details.get('filter_logic', 0):
-          for choice_id, choice_text in CF_FILTER_CHOICES:
-            if choice_text.lower() == cf_details['filter_logic']:
-              custom_field.filter_logic = choice_id
-
         if cf_details.get('label', 0):
           custom_field.label = cf_details['label']
 
@@ -58,7 +42,7 @@ with file.open('r') as stream:
           custom_field.required = cf_details['required']
 
         if cf_details.get('type', 0):
-          custom_field.type = text_to_fields[cf_details['type']]
+          custom_field.type = cf_details['type']
 
         if cf_details.get('weight', 0):
           custom_field.weight = cf_details['weight']