implement default db file field

CHANGELOG.rst

@@ -1,7 +1,8 @@
-1.4.8 (unreleased)
+1.5.0 (unreleased)
 ------------------
 
-- Nothing changed yet.
+- Provide default cloud file implementation
+  [vangheem]
 
 
 1.4.7 (2017-10-10)

VERSION

@@ -1 +1 @@
-1.4.8.dev0
+1.5.9.dev0

docs/source/developer/behavior.md

@@ -193,3 +193,12 @@ DELETE behaviors : DELETE on the object/@behaviors:
         "behavior": "guillotina.behaviors.dublincore.IDublinCore"
     }
 ```
+
+
+
+## OOTB Behaviors
+
+Guillotina comes with a couple behaviors OOTB.
+
+- guillotina.behaviors.dublincore.IDublinCore: Dublin core field
+- guillotina.behaviors.attachment.IAttachment: Provide file field

guillotina/_settings.py

@@ -73,5 +73,6 @@
         ("application/json", interfaces.IRendererFormatJson),
         ("text/html", interfaces.IRendererFormatHtml),
         ("text/plain", interfaces.IRendererFormatPlain)
-    ))
+    )),
+    'cloud_storage': "guillotina.interfaces.IDBFileField"
 }

guillotina/api/files.py

@@ -7,6 +7,7 @@
 from guillotina.api.service import TraversableDownloadService
 from guillotina.api.service import TraversableFieldService
 from guillotina.component import getMultiAdapter
+from guillotina.interfaces import IAsyncBehavior
 from guillotina.interfaces import IFileManager
 from guillotina.interfaces import IResource
 from guillotina.interfaces import IStaticDirectory
@@ -82,6 +83,10 @@ async def __call__(self):
 class UploadFile(TraversableFieldService):
 
     async def __call__(self):
+        if (self.behavior is not None and
+                IAsyncBehavior.implementedBy(self.behavior.__class__)):
+            # providedBy not working here?
+            await self.behavior.load(create=True)
         # We need to get the upload as async IO and look for an adapter
         # for the field to save there by chunks
         adapter = getMultiAdapter(
@@ -155,6 +160,10 @@ async def __call__(self):
 class TusCreateFile(UploadFile):
 
     async def __call__(self):
+        if (self.behavior is not None and
+                IAsyncBehavior.implementedBy(self.behavior.__class__)):
+            # providedBy not working here?
+            await self.behavior.load(create=True)
         # We need to get the upload as async IO and look for an adapter
         # for the field to save there by chunks
         adapter = getMultiAdapter(

guillotina/behaviors/__init__.py

@@ -1,4 +1,5 @@
 # so we can scan guillotina.behaviors and load behavior configuration
+from . import attachment  # noqa
 from . import dublincore  # noqa
 from guillotina.interfaces import IBehaviorAssignable
 from zope.interface import alsoProvides

guillotina/behaviors/attachment.py

@@ -0,0 +1,22 @@
+# -*- encoding: utf-8 -*-
+from guillotina import configure
+from guillotina.behaviors.instance import AnnotationBehavior
+from guillotina.files import CloudFileField
+from zope.interface import Interface
+
+
+class IAttachmentMarker(Interface):
+    """Marker interface for content with dublin core."""
+
+
+class IAttachment(Interface):
+    file = CloudFileField()
+
+
+@configure.behavior(
+    title="Attachment behavior",
+    provides=IAttachment,
+    marker=IAttachmentMarker,
+    for_="guillotina.interfaces.IResource")
+class Attachment(AnnotationBehavior):
+    pass