cli: let me quit

flake.lock

@@ -7,11 +7,11 @@
         ]
       },
       "locked": {
-        "lastModified": 1769338528,
+        "lastModified": 1780178524,
-        "narHash": "sha256-t18ZoSt9kaI1yde26ok5s7aFLkap1Q9+/2icVh2zuaE=",
+        "narHash": "sha256-2PcNyNqbGCWBpAMdCU1HxSQmhQiG6evdjxVnPA7w5bQ=",
         "ref": "refs/heads/main",
-        "rev": "7218348163fd8d84df4a6f682c634793e67a3fed",
+        "rev": "2406de41ce9d0a1404cbf4e55537e3f720f37f23",
-        "revCount": 13,
+        "revCount": 15,
         "type": "git",
         "url": "https://git.pvv.ntnu.no/Projects/libdib.git"
       },

src/worblehat/cli/main.py

@@ -75,6 +75,8 @@ class WorblehatCli(NumberedCmd):
         )
         bookcase_selector.cmdloop()
         bookcase = bookcase_selector.result
+        if bookcase == None:
+            return
 
         for shelf in bookcase.shelfs:
             print(shelf.short_str())
@@ -138,6 +140,8 @@ class WorblehatCli(NumberedCmd):
         )
         bookcase_selector.cmdloop()
         bookcase = bookcase_selector.result
+        if bookcase == None:
+            return
 
         bookcase_item.shelf = select_bookcase_shelf(bookcase, self.sql_session)
 
@@ -152,6 +156,8 @@ class WorblehatCli(NumberedCmd):
 
         media_type_selector.cmdloop()
         bookcase_item.media_type = media_type_selector.result
+        if bookcase_item.media_type == None:
+            return
 
         username = input("Who owns this book? [PVV]> ")
         if username != "":

src/worblehat/cli/subclis/bookcase_item.py

@@ -384,6 +384,8 @@ class EditBookcaseCli(NumberedCmd):
         )
         bookcase_selector.cmdloop()
         bookcase = bookcase_selector.result
+        if bookcase == None:
+            return
         assert isinstance(bookcase, Bookcase)
 
         shelf = select_bookcase_shelf(bookcase, self.sql_session)