Merge branch 'search_results_num' into 'master'

Display num of results when searching/filtering tags

Closes #408

See merge request tildes/tildes!142

tildes/tildes/models/pagination.py

@@ -113,6 +113,13 @@ class PaginatedQuery(ModelQuery):
 
         return self
 
+    def remove_before_after(self) -> PaginatedQuery:
+        """Remove all before or after restrictions from query"""
+        self.before_id = None
+        self.after_id = None
+
+        return self
+
     def _apply_before_or_after(self) -> PaginatedQuery:
         """Apply the "before" or "after" restrictions if necessary."""
         # pylint: disable=assignment-from-no-return
@@ -232,6 +239,13 @@ class PaginatedResults:
             self.has_next_page = False
             self.has_prev_page = False
 
+        # fetch total number of results without pagination
+        self.total_count = (
+            query.request.db_session.query(func.count())
+            .select_from(query.remove_before_after().statement)
+            .scalar()
+        )
+
     def __iter__(self) -> Iterator[Any]:
         """Iterate over the results."""
         return iter(self.results)

tildes/tildes/templates/search.jinja2

@@ -5,6 +5,7 @@
 
 {% from 'macros/forms.jinja2' import search_form %}
 {% from 'macros/links.jinja2' import link_to_group with context %}
+{% from 'macros/utils.jinja2' import pluralize %}
 
 {% block title %}Search results: {{ search }}{% endblock %}
 
@@ -29,7 +30,7 @@
 {% block sidebar %}
   {{ search_form(search, group) }}
 
-  <h2>Search results</h2>
+  <h2>Found {{ pluralize(topics.total_count, "result") }}</h2>
 
   <p><a href="/">Back to home page</a></p>
 

tildes/tildes/templates/topic_listing.jinja2

@@ -123,7 +123,7 @@
 <div class="topic-listing-filter">
 {% if tag %}
   {% if is_single_group %}
-    Showing only topics in {{ link_to_group(group) }} with the tag "{{ tag|replace('_', ' ') }}".
+    Showing only topics in {{ link_to_group(group) }} with the tag "{{ tag|replace('_', ' ') }}" ({{ topics.total_count }} total).
     <a href="{{ request.current_listing_normal_url() }}">Back to normal view</a> /
     <a href="{{ request.route_url("home", _query={"tag": tag}) }}">
       {% if request.user %}
@@ -133,7 +133,7 @@
       {% endif %}
     </a>
   {% else %}
-    Showing only topics with the tag "{{ tag|replace('_', ' ') }}".
+    Showing only topics with the tag "{{ tag|replace('_', ' ') }}" ({{ topics.total_count }} total).
     <a href="{{ request.current_listing_normal_url() }}">Back to normal view</a>
   {% endif %}