Misc cleanup

netbox/utilities/forms.py

@@ -154,6 +154,9 @@ def add_blank_choice(choices):
 #
 
 class SmallTextarea(forms.Textarea):
+    """
+    Subclass used for rendering a smaller textarea element.
+    """
     pass
 
 
@@ -169,6 +172,9 @@ class ColorSelect(forms.Select):
 
 
 class BulkEditNullBooleanSelect(forms.NullBooleanSelect):
+    """
+    A Select widget for NullBooleanFields
+    """
 
     def __init__(self, *args, **kwargs):
         super(BulkEditNullBooleanSelect, self).__init__(*args, **kwargs)
@@ -448,7 +454,9 @@ class ChainedModelMultipleChoiceField(forms.ModelMultipleChoiceField):
 
 
 class SlugField(forms.SlugField):
-
+    """
+    Extend the built-in SlugField to automatically populate from a field called `name` unless otherwise specified.
+    """
     def __init__(self, slug_source='name', *args, **kwargs):
         label = kwargs.pop('label', "Slug")
         help_text = kwargs.pop('help_text', "URL-friendly unique shorthand")
@@ -558,11 +566,15 @@ class JSONField(_JSONField):
 #
 
 class BootstrapMixin(forms.BaseForm):
-
+    """
+    Add the base Bootstrap CSS classes to form elements.
+    """
     def __init__(self, *args, **kwargs):
         super(BootstrapMixin, self).__init__(*args, **kwargs)
 
-        exempt_widgets = [forms.CheckboxInput, forms.ClearableFileInput, forms.FileInput, forms.RadioSelect]
+        exempt_widgets = [
+            forms.CheckboxInput, forms.ClearableFileInput, forms.FileInput, forms.RadioSelect
+        ]
 
         for field_name, field in self.fields.items():
             if field.widget.__class__ not in exempt_widgets:
@@ -632,14 +644,15 @@ class ComponentForm(BootstrapMixin, forms.Form):
 
 
 class BulkEditForm(forms.Form):
-
+    """
+    Base form for editing multiple objects in bulk
+    """
     def __init__(self, model, parent_obj=None, *args, **kwargs):
         super(BulkEditForm, self).__init__(*args, **kwargs)
         self.model = model
         self.parent_obj = parent_obj
+        self.nullable_fields = []
 
         # Copy any nullable fields defined in Meta
         if hasattr(self.Meta, 'nullable_fields'):
-            self.nullable_fields = [field for field in self.Meta.nullable_fields]
-        else:
-            self.nullable_fields = []
+            self.nullable_fields = self.Meta.nullable_fields