[BUG] Search is crashing (500 res) when certain common queries are searched

[calumbell]

Bug description

When searching certain terms using the /v2/search endpoint, the server throws a 500 (Internal Service Error). On the front-end, this cause the website to crash.

Investigating the staging branch on local, I caught the following information from the stack trace in the terminal when attempting to search the query "dragon":

  File "/xyz/Documents/code/open5e-api/search/serializers.py", line 67, in get_object
    return result_detail.search_result_extra_fields()
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/xyz/Documents/code/open5e-api/api_v2/models/document.py", line 149, in search_result_extra_fields
    "school":self.school.key,
             ^^^^^^^^^^^
AttributeError: 'Item' object has no attribute 'school'
[15/May/2026 21:34:02] "GET /v2/search/?limit=5000&document__key__in=no-sources&schema=v2&query=dragon HTTP/1.1" 500 22877

It looks like the search serializers are attempting to the index into the 'school' field of the Item serializer, which doesn't have that field (it is a Spell field).

Steps to Reproduce

Visit the Open5e website and use the search bar to search for any of the following terms:

• Dragon
• Sword
• Shield
• Ring
• Strength

And you will hit the error page (500: Internal Service Error)

However, the bug does not occur when the following terms are searched for:

• Goblin
• Fireball
• Devil
• Acolyte
• Fighter