18997 FIX "Host name or alias (regex)" filter

The `Host name or alias (regex)` filter was using the incorrect
Livestatus column name `alias` instead of `host_alias` when matching
against the host alias. This caused errors on dashboards that used this
filter. The column name has been corrected so the filter now works as
expected.

SUP-25992

Change-Id: I7f0c2c26792a20a52ab77b698a97f2c69e32549f

Author: lpetrora

.werks/18997.md

@@ -0,0 +1,14 @@
+[//]: # (werk v2)
+# Fix "Host name or alias (regex)" filter
+
+key        | value
+---------- | ---
+date       | 2026-04-14T10:48:28+00:00
+version    | 2.3.0p47
+class      | fix
+edition    | cre
+component  | multisite
+level      | 1
+compatible | yes
+
+The `Host name or alias (regex)` filter was using the incorrect Livestatus column name `alias` instead of `host_alias` when matching against the host alias. This caused errors on dashboards that used this filter. The column name has been corrected so the filter now works as expected.

cmk/gui/query_filters.py

@@ -544,7 +544,9 @@ def __init__(self) -> None:
     def _filter(self, value: FilterHTTPVariables) -> FilterHeader:
         host = livestatus.lqencode(value[self.request_vars[0]])
 
-        return lq_logic("Filter:", [f"host_name {self.op} {host}", f"alias {self.op} {host}"], "Or")
+        return lq_logic(
+            "Filter:", [f"host_name {self.op} {host}", f"host_alias {self.op} {host}"], "Or"
+        )
 
 
 class OptEventEffectiveContactgroupQuery(TextQuery):

tests/unit/cmk/gui/plugins/visuals/test_filters.py

@@ -434,7 +434,7 @@ class FilterTest(NamedTuple):
         request_vars=[
             ("hostnameoralias", "abc"),
         ],
-        expected_filters=("Filter: host_name ~~ abc\n" "Filter: alias ~~ abc\n" "Or: 2\n"),
+        expected_filters=("Filter: host_name ~~ abc\n" "Filter: host_alias ~~ abc\n" "Or: 2\n"),
     ),
     FilterTest(
         ident="hosts_having_service_problems",
@@ -587,7 +587,7 @@ class FilterTest(NamedTuple):
     FilterTest(
         ident="hostnameoralias",
         request_vars=[("hostnameoralias", "horst")],
-        expected_filters="Filter: host_name ~~ horst\nFilter: alias ~~ horst\nOr: 2\n",
+        expected_filters="Filter: host_name ~~ horst\nFilter: host_alias ~~ horst\nOr: 2\n",
     ),
     # Testing FilterCommaSeparatedStringList
     FilterTest(