Fix dumps

Author: woojiahao

app/exercise_config.py

@@ -36,8 +36,10 @@ def exercise_fork_name(self, username: str) -> str:
         return f"{username}-gitmastery-{self.exercise_repo.repo_title}"
 
     def to_json(self) -> str:
-        omit_fields = ["path", "cds"]
-        dict_self = self.__dict__
-        for field in omit_fields:
-            dict_self.pop(field)
-        return json.dumps(dict_self, sort_keys=False, indent=2)
+        return json.dumps(
+            self,
+            default=lambda o: {
+                k: v for k, v in o.__dict__.items() if k not in ("path", "cds")
+            },
+            indent=2,
+        )

app/gitmastery_config.py

@@ -12,8 +12,10 @@ class GitMasteryConfig:
     cds: int
 
     def to_json(self) -> str:
-        omit_fields = ["path", "cds"]
-        dict_self = self.__dict__
-        for field in omit_fields:
-            dict_self.pop(field)
-        return json.dumps(dict_self, sort_keys=False, indent=2)
+        return json.dumps(
+            self,
+            default=lambda o: {
+                k: v for k, v in o.__dict__.items() if k not in ("path", "cds")
+            },
+            indent=2,
+        )