prompt: We are currently solving the following issue within our repository. Here is the issue text:
  --- BEGIN ISSUE ---
  Representation of Notation objects
  When I recently tried to edit a source, I was presented with an error message, and found that I was missing several required fields, including this one: ![Screen Shot 2022-09-06 at 08 59 56](https://user-images.githubusercontent.com/58090591/188641630-13f87954-0f92-405f-a561-effe3075a3db.png)
  Notation objects are currently pretty inscrutable. They should be represented such that at least their `name` property is visible.
  
  Larger question: why do we have notation objects at all? Currently, the notation model has only one property: `name`. Could this information in Source objects not be more simply represented by a CharField? Is using Notation objects simply the way things were done in OldCantus? Are we using them to ensure standardization among multiple Sources?
  
  --- END ISSUE ---
  
  Below are some code segments, each from a relevant file. One or more of these files may contain bugs.
  --- BEGIN FILES ---
  Path: `django/cantusdb_project/main_app/models/notation.py`
  Content:
  ```
  1 from django.db import models
  2 from main_app.models import BaseModel
  3 
  4 
  5 class Notation(BaseModel):
  6     name = models.CharField(max_length=63)
  7
  ```
  --- END FILES ---
  
  Please first localize the bug based on the issue statement, and then generate a patch according to the `git diff` format fenced by three backticks.
  
  Here is an example:
  
  ```diff
  diff --git a/examples/server_async.py b/examples/server_async.py
  --- a/examples/server_async.py
  +++ b/examples/server_async.py
  @@ -313,4 +313,4 @@
   
   
   if __name__ == "__main__":
  -    asyncio.run(run_async_server("."), debug=True)
  +    asyncio.run(run_async_server(), debug=True)
  diff --git a/examples/server_sync.py b/examples/server_sync.py
  --- a/examples/server_sync.py
  +++ b/examples/server_sync.py
  @@ -313,5 +313,5 @@
   
   
   if __name__ == "__main__":
  -    server = run_sync_server(".")
  +    server = run_sync_server()
       server.shutdown()
  
  ```
  
golden_diff: diff --git a/django/cantusdb_project/main_app/models/notation.py b/django/cantusdb_project/main_app/models/notation.py
  --- a/django/cantusdb_project/main_app/models/notation.py
  +++ b/django/cantusdb_project/main_app/models/notation.py
  @@ -4,3 +4,5 @@
   
   class Notation(BaseModel):
       name = models.CharField(max_length=63)
  +    def __str__(self):
  +        return f"{self.name} ({self.id})"
  \ No newline at end of file
  
verification_info: {"golden_diff": "diff --git a/django/cantusdb_project/main_app/models/notation.py b/django/cantusdb_project/main_app/models/notation.py\n--- a/django/cantusdb_project/main_app/models/notation.py\n+++ b/django/cantusdb_project/main_app/models/notation.py\n@@ -4,3 +4,5 @@\n \n class Notation(BaseModel):\n     name = models.CharField(max_length=63)\n+    def __str__(self):\n+        return f\"{self.name} ({self.id})\"\n\\ No newline at end of file\n", "issue": "Representation of Notation objects\nWhen I recently tried to edit a source, I was presented with an error message, and found that I was missing several required fields, including this one: ![Screen Shot 2022-09-06 at 08 59 56](https://user-images.githubusercontent.com/58090591/188641630-13f87954-0f92-405f-a561-effe3075a3db.png)\r\nNotation objects are currently pretty inscrutable. They should be represented such that at least their `name` property is visible.\r\n\r\nLarger question: why do we have notation objects at all? Currently, the notation model has only one property: `name`. Could this information in Source objects not be more simply represented by a CharField? Is using Notation objects simply the way things were done in OldCantus? Are we using them to ensure standardization among multiple Sources?\n", "before_files": [{"content": "from django.db import models\nfrom main_app.models import BaseModel\n\n\nclass Notation(BaseModel):\n    name = models.CharField(max_length=63)\n", "path": "django/cantusdb_project/main_app/models/notation.py"}], "after_files": [{"content": "from django.db import models\nfrom main_app.models import BaseModel\n\n\nclass Notation(BaseModel):\n    name = models.CharField(max_length=63)\n    def __str__(self):\n        return f\"{self.name} ({self.id})\"", "path": "django/cantusdb_project/main_app/models/notation.py"}]}