Moved StyleMixin code.

content_plugins/base.py

@@ -9,6 +9,7 @@ from shared.utils.fields import AutoSlugField
 
 from .admin import ContentInlineBase, RichTextInlineBase
 
+from .plugins.mixins import StyleMixin
 from . import USE_TRANSLATABLE_FIELDS
 
 
@@ -82,38 +83,6 @@ class StringRendererPlugin(BasePlugin):
         raise NotImplementedError
 
 
-class StyleMixin(models.Model):
-    class StyleField(models.CharField):
-        # Allow overriding of STYLE_CHOICES in subclasses
-
-        def contribute_to_class(self, cls, name, **kwargs):
-            if hasattr(cls, 'STYLE_CHOICES'):
-                self.choices = cls.STYLE_CHOICES
-            super().contribute_to_class(cls, name, **kwargs)
-
-    STYLE_CHOICES = (
-        ('default', _("default")),
-    )
-
-    style = StyleField(_("style"), max_length=50, null=True, blank=True)
-
-    class Meta:
-        abstract = True
-
-    def get_style_slug(self):
-        return getattr(self, 'style', None) or 'default'
-
-    def get_template_names(self):
-        # Should only be called by classes using filesystem templates
-        template_names = super().get_template_names() or []
-        template_names.extend([
-            "{path_prefix}style/_{style}.html".format(
-                path_prefix=self.get_path_prefix(),
-                style=self.get_style_slug()),
-        ])
-        return template_names
-
-
 class FilesystemTemplateRendererPlugin(BasePlugin):
     template_name = None
     path_prefix = 'plugins/'  # TODO Rename to 'template_name_prefix'

content_plugins/plugins/mixins.py

@@ -0,0 +1,38 @@
+from django.db import models
+from django.utils.translation import ugettext_lazy as _
+
+
+class StyleMixin(models.Model):
+    class StyleField(models.CharField):
+        """
+        Allows overriding of STYLE_CHOICES in subclasses.
+        """
+
+        def contribute_to_class(self, cls, name, **kwargs):
+            if hasattr(cls, 'STYLE_CHOICES'):
+                self.choices = cls.STYLE_CHOICES
+            super().contribute_to_class(cls, name, **kwargs)
+
+    STYLE_CHOICES = (
+        ('default', _("default")),
+    )
+
+    style = StyleField(_("style"), max_length=50, null=True, blank=True)
+
+    class Meta:
+        abstract = True
+
+    def get_style_slug(self):
+        return getattr(self, 'style', None) or 'default'
+
+    def get_template_names(self):
+        # Should only be called by classes using filesystem templates
+        template_names = super().get_template_names() or []
+        template_names.extend([
+            "{path_prefix}style/_{style}.html".format(
+                path_prefix=self.get_path_prefix(),
+                style=self.get_style_slug()),
+        ])
+        return template_names
+
+