Revert "refactor: eliminate single-use helper (ietf-tools#8226)"

This reverts commit 6608c9d.

ietf/doc/utils.py

@@ -1046,6 +1046,10 @@ def get_replaces_tree(doc):
     return sorted(history, key=lambda x: x['published'])
 
 
+def get_search_cache_key(key_fragment):
+    return f"doc:document:search:{key_fragment}"
+
+
 def build_file_urls(doc: Union[Document, DocHistory]):
     if doc.type_id == "rfc":
         base_path = os.path.join(settings.RFC_PATH, doc.name + ".")

ietf/doc/views_search.py

@@ -65,7 +65,7 @@
     IESG_BALLOT_ACTIVE_STATES, IESG_STATCHG_CONFLREV_ACTIVE_STATES,
     IESG_CHARTER_ACTIVE_STATES )
 from ietf.doc.fields import select2_id_doc_name_json
-from ietf.doc.utils import augment_events_with_revision, needed_ballot_positions
+from ietf.doc.utils import get_search_cache_key, augment_events_with_revision, needed_ballot_positions
 from ietf.group.models import Group
 from ietf.idindex.index import active_drafts_index_by_group
 from ietf.name.models import DocTagName, DocTypeName, StreamName
@@ -292,7 +292,7 @@ def search(request):
     if request.method == "POST":
         form = SearchForm(data=request.POST)
         if form.is_valid():
-            cache_key = f"doc:document:search:{form.cache_key_fragment()}"
+            cache_key = get_search_cache_key(form.cache_key_fragment())
             cached_val = cache.get(cache_key)
             if cached_val:
                 [results, meta] = cached_val