Fix: Fixed issue with invalid time windows when linking between event search and timeline views.

As it turned out the timepager component was modifiing request parameters to generate the links and subsequent components were unable to access original values. (Redmine issue: #4609)

lib/hawat/app.py

@@ -490,6 +490,12 @@ def _setup_app_core(app):
                 res = json.load(fp)
             return res
 
+        def make_copy_deep(data):
+            """
+            Make a deep copy of given data structure.
+            """
+            return copy.deepcopy(data)
+
         return dict(
             get_endpoints_dict    = get_endpoints_dict,
             get_endpoint_class    = get_endpoint_class,
@@ -521,7 +527,8 @@ def _setup_app_core(app):
             json_to_yaml        = json_to_yaml,
             get_uuid4           = get_uuid4,
             get_limit_counter   = get_limit_counter,
-            load_json_from_file = load_json_from_file
+            load_json_from_file = load_json_from_file,
+            make_copy_deep      = make_copy_deep
         )
 
     class HawatJSONEncoder(flask.json.JSONEncoder):

lib/hawat/blueprints/design/templates/_macros_site.html

@@ -184,7 +184,11 @@
 
 ----------------------------------------------------------------------------- #}
 
-{%- macro render_timepager(qparams, dt_from, tiid) %}
+{%- macro render_timepager(qparams_p, dt_from_p, tiid) %}
+{%- if dt_from_p %}
+    {%- set qparams = make_copy_deep(qparams_p) %}
+    {%- set dt_from = make_copy_deep(dt_from_p) %}
+
     {%- set dt_from = dt_from.replace(tzinfo = None) %}
     {%- set dt_to = get_datetime_window(tiid, 'next', dt_from) %}
     {%- if dt_from and dt_to %}
@@ -216,6 +220,7 @@
                 </ul>
             </nav>
     {%- endif %}
+{%- endif %}
 {%- endmacro %}