Improve email diff display for exports to CORE API 'Member.customers'

break out each subrecord into separate fields, for easier viewing

rattail_corepos/corepos/office/importing/model.py

@@ -30,6 +30,44 @@ from rattail_corepos.corepos.util import get_core_members
 from rattail_corepos.corepos.api import make_corepos_api
 
 
+class ToCOREAPIHandler(importing.ImportHandler):
+    """
+    Base class for handlers targeting the CORE API.
+    """
+    local_key = 'corepos_api'
+    generic_local_title = "CORE Office (API)"
+
+    @property
+    def local_title(self):
+        return "CORE-POS (API)"
+
+    def process_changes(self, changes):
+
+        if 'Member' in changes:
+            member_changes = changes['Member']
+            member_importer = self.importers['Member']
+            created, updated, deleted = changes['Member']
+            if updated:
+
+                # explode the 'customers' field so email will show
+                # diffs for each subrecord field
+                for update in updated:
+                    local_object, local_data, host_data = update
+
+                    local_customers = local_data.pop('customers')
+                    for i, customer in enumerate(local_customers, 1):
+                        for key in customer:
+                            local_data[f'customers.{i}.{key}'] = customer[key]
+
+                    host_customers = host_data.pop('customers')
+                    for i, customer in enumerate(host_customers, 1):
+                        for key in customer:
+                            host_data[f'customers.{i}.{key}'] = customer[key]
+
+        # do normal logic for the rest
+        super().process_changes(changes)
+
+
 class ToCoreAPI(importing.Importer):
     """
     Base class for all CORE "operational" model importers, which use the API.

rattail_corepos/corepos/office/importing/rattail.py

@@ -32,26 +32,14 @@ from sqlalchemy import orm
 from rattail import importing
 from rattail.db import model
 from rattail.util import pretty_quantity
-from rattail_corepos.corepos import importing as corepos_importing
+from rattail_corepos.corepos.office import importing as corepos_importing
 from rattail_corepos.corepos.util import get_max_existing_vendor_id
 
 
 log = logging.getLogger(__name__)
 
 
-class ToCOREAPIHandler(importing.ImportHandler):
+class FromRattailToCore(importing.FromRattailHandler, corepos_importing.model.ToCOREAPIHandler):
-    """
-    Base class for handlers targeting the CORE API.
-    """
-    local_key = 'corepos_api'
-    generic_local_title = "CORE Office (API)"
-
-    @property
-    def local_title(self):
-        return "CORE-POS (API)"
-
-
-class FromRattailToCore(importing.FromRattailHandler, ToCOREAPIHandler):
     """
     Rattail -> CORE-POS export handler
     """