Move LocalizedValueDescriptor into its own file

localized_fields/fields/localized_field.py

@@ -4,71 +4,12 @@ from typing import Union
 
 from django.conf import settings
 from django.db.utils import IntegrityError
-from django.utils import six, translation
 
 from psqlextra.fields import HStoreField
 
 from ..forms import LocalizedFieldForm
 from ..localized_value import LocalizedValue
-
-
-class LocalizedValueDescriptor(object):
-    """
-    The descriptor for the localized value attribute on the model instance.
-    Returns a :see:LocalizedValue when accessed so you can do stuff like::
-
-        >>> from myapp.models import MyModel
-        >>> instance = MyModel()
-        >>> instance.value.en = 'English value'
-
-    Assigns a strings to active language key in :see:LocalizedValue on
-    assignment so you can do::
-
-        >>> from django.utils import translation
-        >>> from myapp.models import MyModel
-
-        >>> translation.activate('nl')
-        >>> instance = MyModel()
-        >>> instance.title = 'dutch title'
-        >>> print(instance.title.nl) # prints 'dutch title'
-    """
-    def __init__(self, field):
-        self.field = field
-
-    def __get__(self, instance, cls=None):
-        if instance is None:
-            return self
-
-        # This is slightly complicated, so worth an explanation.
-        # `instance.localizedvalue` needs to ultimately return some instance of
-        # `LocalizedValue`, probably a subclass.
-
-        # The instance dict contains whatever was originally assigned
-        # in __set__.
-        if self.field.name in instance.__dict__:
-            value = instance.__dict__[self.field.name]
-        elif instance.pk is not None:
-            instance.refresh_from_db(fields=[self.field.name])
-            value = getattr(instance, self.field.name)
-        else:
-            value = None
-
-        if value is None:
-            attr = self.field.attr_class()
-            instance.__dict__[self.field.name] = attr
-
-        if isinstance(value, dict):
-            attr = self.field.attr_class(value)
-            instance.__dict__[self.field.name] = attr
-
-        return instance.__dict__[self.field.name]
-
-    def __set__(self, instance, value):
-        if isinstance(value, six.string_types):
-            self.__get__(instance).set(translation.get_language() or
-                                       settings.LANGUAGE_CODE, value)
-        else:
-            instance.__dict__[self.field.name] = value
+from ..localized_descriptor import LocalizedValueDescriptor
 
 
 class LocalizedField(HStoreField):

localized_fields/localized_descriptor.py

@@ -0,0 +1,65 @@
+from django.conf import settings
+from django.utils import six, translation
+
+
+class LocalizedValueDescriptor:
+    """
+    The descriptor for the localized value attribute on the model instance.
+    Returns a :see:LocalizedValue when accessed so you can do stuff like::
+
+        >>> from myapp.models import MyModel
+        >>> instance = MyModel()
+        >>> instance.value.en = 'English value'
+
+    Assigns a strings to active language key in :see:LocalizedValue on
+    assignment so you can do::
+
+        >>> from django.utils import translation
+        >>> from myapp.models import MyModel
+
+        >>> translation.activate('nl')
+        >>> instance = MyModel()
+        >>> instance.title = 'dutch title'
+        >>> print(instance.title.nl) # prints 'dutch title'
+    """
+
+    def __init__(self, field):
+        """Initializes a new instance of :see:LocalizedValueDescriptor."""
+
+        self.field = field
+
+    def __get__(self, instance, cls=None):
+        if instance is None:
+            return self
+
+        # This is slightly complicated, so worth an explanation.
+        # `instance.localizedvalue` needs to ultimately return some instance of
+        # `LocalizedValue`, probably a subclass.
+
+        # The instance dict contains whatever was originally assigned
+        # in __set__.
+
+        if self.field.name in instance.__dict__:
+            value = instance.__dict__[self.field.name]
+        elif instance.pk is not None:
+            instance.refresh_from_db(fields=[self.field.name])
+            value = getattr(instance, self.field.name)
+        else:
+            value = None
+
+        if value is None:
+            attr = self.field.attr_class()
+            instance.__dict__[self.field.name] = attr
+
+        if isinstance(value, dict):
+            attr = self.field.attr_class(value)
+            instance.__dict__[self.field.name] = attr
+
+        return instance.__dict__[self.field.name]
+
+    def __set__(self, instance, value):
+        if isinstance(value, six.string_types):
+            self.__get__(instance).set(translation.get_language() or
+                                       settings.LANGUAGE_CODE, value)
+        else:
+            instance.__dict__[self.field.name] = value