upgrade step

.isort.cfg

@@ -0,0 +1,2 @@
+[settings]
+profile = plone

src/design/plone/contenttypes/profiles/default/metadata.xml

@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="utf-8"?>
 <metadata>
-  <version>7200</version>
+  <version>7300</version>
   <dependencies>
     <dependency>profile-redturtle.bandi:default</dependency>
     <dependency>profile-collective.venue:default</dependency>

src/design/plone/contenttypes/upgrades/configure.zcml

@@ -848,4 +848,13 @@
         handler=".upgrades.to_7200"
         />
   </genericsetup:upgradeSteps>
+
+  <genericsetup:upgradeStep
+      title="Migrate from File/Image Field to BlobField"
+      profile="design.plone.contenttypes:default"
+      source="7200"
+      destination="7300"
+      handler=".to_7300.to_7300"
+      />
+
 </configure>

src/design/plone/contenttypes/upgrades/to_7300.py

@@ -0,0 +1,55 @@
+# -*- coding: utf-8 -*-
+from .upgrades import logger
+from Acquisition import aq_base
+from plone import api
+from plone.namedfile import file
+
+
+def to_7300(context):
+
+    mapping = {
+        # portal_type
+        "Documento Personale": {
+            # field: "type"
+            "immagine": "image",
+            "pratica_associata": "file",
+        },
+        "Messaggio": {
+            "documenti _allegati": "file",
+        },
+        "Persona": {
+            "foto_persona": "image",
+        },
+        "RicevutaPagamento": {
+            "stampa_ricevuta": "file",
+            "pratica_associata": "file",
+            "allegato": "file",
+        },
+    }
+
+    mapping_types = {
+        "image": (file.NamedImage, file.NamedBlobImage),
+        "file": (file.NamedFile, file.NamedBlobFile),
+    }
+
+    for portal_type, fields in mapping.items():
+        brains = api.content.find(unrestricted=True, portal_type=portal_type)
+        logger.info("Updating fields for %s %s objects", portal_type, len(brains))
+        for brain in brains:
+            obj = aq_base(brain.getObject())
+            for fieldname, _type in fields.items():
+                value = getattr(obj, fieldname, None)
+                # if value:
+                #     import pdb; pdb.set_trace()
+                if value and isinstance(value, mapping_types[_type][0]):
+                    logger.info("Updated %s for %s", fieldname, brain.getPath())
+                    setattr(
+                        obj,
+                        fieldname,
+                        mapping_types[_type][1](
+                            data=value.data,
+                            contentType=value.contentType,
+                            filename=value.filename,
+                        ),
+                    )
+    logger.info("Finished updating fields")