feat: tokenize search

apis_ontology/filters.py

@@ -1,5 +1,42 @@
+import logging
+import itertools
+import re
+
 from django.db import models
 
+PATTERN = re.compile(r'''((?:[^ "']|"[^"]*"|'[^']*')+)''')
+
+logger = logging.getLogger(__name__)
+
+
+def valuetosearchtype(value):
+    if value.strip('"') == value:
+        return "__unaccent__icontains", value
+    return "__exact", value.strip('"')
+
+
+def tokenize(value):
+    tokens = PATTERN.split(value)
+    tokens = list(filter(str.strip, tokens))
+    return list(map(valuetosearchtype, tokens))
+
 
 def name_first_name_filter(queryset, name, value):
-    return queryset.filter(models.Q(name__unaccent__icontains=value) | models.Q(first_name__unaccent__icontains=value))
+    tokens = tokenize(value)
+    searchfields = ["first_name", "name"]
+
+    q = models.Q()
+    if len(tokens) > 1:
+        for combination in itertools.permutations(tokens, len(searchfields)):
+            q_and = models.Q()
+            mapping = [{field + searchtype: value} for field, (searchtype, value) in zip(searchfields, combination)]
+            for query in mapping:
+                q_and &= models.Q(**query)
+            q |= q_and
+    else:
+        for searchfield in searchfields:
+            mapping = [{searchfield + searchtype: value} for searchtype, value in tokens]
+            for query in mapping:
+                q |= models.Q(**query)
+    logger.debug(q)
+    return queryset.filter(q)