CKAN__SEARCH__SOLR_ALLOWED_QUERY_PARSERS added.

- Required option to ckan.search.solr_allowed_query_parsers config for spatial search, see: ckan/ckanext-spatial#328
- Update solr backend to solr-spatial-field

.env.example

@@ -113,6 +113,8 @@ CKAN__PREVIEW__JSON_FORMATS="json jsonld"
 CKAN__PREVIEW__XML_FORMATS="xml rdf rdf+xml owl+xml atom rss turtle ttl n3 n-triples"
 CKAN__PREVIEW__TEXT_FORMATS="text plain text/plain text/turtle csv tsv rss txt json"
 CKAN__PREVIEW__LOADABLE="html htm rdf+xml owl+xml xml n3 n-triples turtle plain atom csv tsv rss txt json arcgis_rest"
+# ckanext-spatial: Allow Solr local params: https://github.com/ckan/ckanext-spatial/issues/328
+CKAN__SEARCH__SOLR_ALLOWED_QUERY_PARSERS = field
 
 ## Resource Proxy settings
 ### Preview size limit, default: 1MB
@@ -150,8 +152,8 @@ CKANEXT__DCAT__RDF_PROFILES='euro_dcat_ap_2'
 # The custom endpoint **must** start with a forward slash (`/`) and contain the `{_format}` placeholder. The endpoint is added to the CKAN_SITE_URL and CKAN__ROOT_PATH, example: http://localhost:5000/catalog/catalog.rdf
 CKANEXT__DCAT__DEFAULT_CATALOG_ENDPOINT='/catalog.{_format}'
 
-# ckanext-spatial (Solr Backend - solr8-spatial)
-CKANEXT__SPATIAL__SEARCH_BACKEND=solr-bbox
+# ckanext-spatial (Solr Backend - solr9-spatial: https://docs.ckan.org/projects/ckanext-spatial/en/latest/spatial-search.html#choosing-a-backend-for-the-spatial-search)
+CKANEXT__SPATIAL__SEARCH_BACKEND=solr-spatial-field
 CKAN__SPATIAL__SRID=3857
 CKANEXT__SPATIAL__COMMON_MAP__TYPE=custom
 CKANEXT__SPATIAL__COMMON_MAP__CUSTOM__URL=http://a.tile.openstreetmap.org/{z}/{x}/{y}.png