Počítadla řešení také na stránce kola u výpisu úloh

Spočítání by mělo být díky indexům snad levné.

mo/web/org_round.py

@@ -4,6 +4,7 @@ import locale
 import os
 import secrets
 from flask_wtf.form import FlaskForm
+from sqlalchemy import func
 from sqlalchemy.orm import joinedload
 import werkzeug.exceptions
 import wtforms
@@ -66,8 +67,21 @@ def org_round(id: int):
 
     contests.sort(key=lambda c: locale.strxfrm(c.place.name))
 
+    sol_counts_q = (
+        sess.query(db.Solution.task_id, func.count(db.Solution.task_id))
+        .filter(db.Solution.task_id.in_(
+            sess.query(db.Task.task_id).filter_by(round=round)
+        ))
+    )
+
+    sol_counts = {}
+    for task_id, count in sol_counts_q.group_by(db.Solution.task_id).all():
+        sol_counts[task_id] = count
+
     tasks = sess.query(db.Task).filter_by(round=round).all()
     tasks.sort(key=lambda t: t.code)
+    for task in tasks:
+        task.sol_count = sol_counts[task.task_id] if task.task_id in sol_counts else 0
 
     form_delete_task = TaskDeleteForm()
     if can_manage_contestants and form_delete_task.validate_on_submit():

mo/web/templates/org_round.html

@@ -44,15 +44,17 @@
 <table class=data>
 	<thead>
 		<tr>
-			<th>Kód</th>
-			<th>Název</th>
-			{% if can_manage_round %}<th>Akce</th>{% endif %}
+			<th>Kód
+			<th>Název
+			<th>Odevzdaná řešení
+			{% if can_manage_round %}<th>Akce{% endif %}
 		</tr>
 	</thead>
 	{% for task in tasks %}
 		<tr>
-			<td>{{ task.code }}</td>
-			<td>{{ task.name }}</td>
+			<td>{{ task.code }}
+			<td>{{ task.name }}
+			<td>{{ task.sol_count }}
 			{% if can_manage_round %}<td>
 				<form action="" method="POST" onsubmit="return confirm('Opravdu nenávratně smazat?')" class="btn-group">
 					{{ form_delete_task.csrf_token() }}
@@ -60,7 +62,7 @@
 					<a class="btn btn-xs btn-primary" href="{{ url_for('org_round_task_edit', id=round.round_id, task_id=task.task_id) }}">Editovat</a>
 					<button type="submit" class="btn btn-xs btn-danger">Smazat</button>
 				</form>
-			</td>{% endif %}
+			{% endif %}
 		</tr>
 	{% endfor %}
 </table>