add |form_asset_url filter to form asset url from commune sites (#51632)

combo_plugin_gnm/templatetags/gnm.py

@@ -21,6 +21,7 @@ import json
 import operator
 import random
 import re
+import urllib.parse
 
 from pyproj import Geod
 from requests import RequestException
@@ -885,3 +886,23 @@ def airquality_hack(cell, request):
 @register.simple_tag
 def get_known_tile_types():
     return list(settings.JSON_CELL_TYPES.keys())
+
+
+@register.filter
+def form_asset_url(url, is_safe=True):
+    parsed = urllib.parse.urlparse(url)
+    form_slug = parsed.path.split('/')[1]
+    # look for wcs service where the form is from, to get service prefix
+    for service_key, service_dict in settings.KNOWN_SERVICES.get('wcs').items():
+        if url.startswith(service_dict.get('url')):
+            if service_key.startswith('_'):
+                ou_prefix = service_key.rsplit('_', 1)[0] + '_'
+            else:
+                ou_prefix = ''
+            break
+    # get matching portal
+    combo_service = settings.KNOWN_SERVICES.get('combo').get(ou_prefix + 'portal')
+    if not combo_service:
+        return ''
+    # return well-known stable asset URL
+    return urllib.parse.urljoin(combo_service.get('url'), '/assets/wcs:form:picture:eservices:%s' % form_slug)