Add key to transfer

Add queryset to transfer
Add models and fields get to transfer

apps/location/transfer.py

@@ -99,7 +99,7 @@ card = {
                 "coordinates": (("lat", "latitude"), ("long", "longitude")),
                 "code": "country_code_2",
                 "postal_code": "zip_code",
-                "is_island": ("is_island", "Boolean")
+                "is_island": ("is_island", "is_island", "Boolean")
             },
             "relations": {
                 "CityNames": {

apps/transfer/utils.py

@@ -63,17 +63,48 @@ def transfer_model(model, card):
         print(f"ERROR: model {model} from {card['app_label']} can not be loaded: {e}")
         return
 
-    querysets = {}
+    card_fields = card['fields']
+    relations = card_fields['relations'] if 'relations' in card_fields else None
+
+    if relations:
+        del(card_fields['relations'])
+
+    if len(card_fields) > 1:
+        print("You must set one table to transfer")
+        return
+
+    legacy_table = list(card_fields.keys())[0]
+    fields = list(card_fields.values())[0]
 
-    for legacy_table, fields in card['fields'].items():
     try:
         legacy_model = apps.get_model(app_label="transfer", model_name=legacy_table)
     except LookupError as e:
         print(f"ERROR: legacy model {model} can not be loaded: {e}")
         return
 
-        print(f"APP MODEL: {app_model}")
+    legacy_fields = []
 
-        print(f"LEGACY MODEL: {legacy_model}")
+    for legacy_field in fields.values():
+        if isinstance(legacy_field, str):
+            legacy_fields.append(legacy_field)
 
-        print(f"FIELDS: {fields}")
+        elif isinstance(legacy_field, tuple):
+            """Группа полей"""
+            if isinstance(legacy_field[0], tuple):
+                for legacy_field_group in legacy_field:
+                    legacy_fields.append(legacy_field_group[1])
+            else:
+                legacy_fields.append(legacy_field[1])
+
+    if model != "City":
+        return
+
+    print(legacy_fields)
+
+    queryset = legacy_model.objects.only(*legacy_fields)
+    print(queryset)
+
+    if relations:
+        for relation_table, relation_data in relations.items():
+            print(relation_table)
+            print(relation_data)