1 files changed, 42 insertions, 0 deletions
diff --git a/ishtar_common/utils.py b/ishtar_common/utils.py
index c6a4032f0..f3b1a821b 100644
--- a/ishtar_common/utils.py
+++ b/ishtar_common/utils.py
@@ -104,9 +104,12 @@ def cached_label_changed(sender, **kwargs):
             setattr(instance, cached_label, lbl)
             changed = True
     if changed:
+        instance._search_updated = False
         if hasattr(instance, '_cascade_change') and instance._cascade_change:
             instance.skip_history_when_saving = True
         instance.save()
+    if hasattr(instance, 'update_search_vector'):
+        instance.update_search_vector()
     updated = False
     if hasattr(instance, '_cached_labels_bulk_update'):
         updated = instance._cached_labels_bulk_update()
@@ -117,6 +120,7 @@ def cached_label_changed(sender, **kwargs):
                 item.test_obj = instance.test_obj
             cached_label_changed(item.__class__, instance=item)
 
+
 SHORTIFY_STR = ugettext(" (...)")
 
 
@@ -289,3 +293,41 @@ def get_all_related_objects(model):
         and f.auto_created and not f.concrete
     ]
 
+
+def merge_tsvectors(vectors):
+    """
+    Parse tsvector to merge them in one string
+    :param vectors: list of tsvector string
+    :return: merged tsvector
+    """
+    result_dict = {}
+    for vector in vectors:
+        if not vector:
+            continue
+
+        current_position = 0
+        if result_dict:
+            for key in result_dict:
+                max_position = max(result_dict[key])
+                if max_position > current_position:
+                    current_position = max_position
+
+        for dct_member in vector.split(" "):
+            key, positions = dct_member.split(':')
+            key = key[1:-1]  # remove quotes
+            positions = [int(pos) + current_position
+                         for pos in positions.split(',')]
+            if key in result_dict:
+                result_dict[key] += positions
+            else:
+                result_dict[key] = positions
+
+    # {'lamelie': [1, 42, 5]} => {'lamelie': "1,42,5"}
+    result_dict = {k: ",".join([str(val) for val in result_dict[k]])
+                   for k in result_dict}
+    # {'lamelie': "1,5", "hagarde": "2", "regarde": "4"} =>
+    # "'lamelie':1,5 'hagarde':2 'regarde':4"
+    result = " ".join(["'{}':{}".format(k, result_dict[k])
+                       for k in result_dict])
+
+    return result