Adds distinct email in the dashboard

tournaments/admin.py

@@ -6,7 +6,7 @@ from django.utils.html import escape
 from django.urls import reverse, path
 from django.utils.safestring import mark_safe
 from django.shortcuts import render
-from django.db.models import Avg
+from django.db.models import Avg, Count
 from datetime import timedelta, datetime
 
 from biz.models import Prospect, ProspectGroup
@@ -18,7 +18,6 @@ from .filters import TeamScoreTournamentListFilter, MatchTournamentListFilter, S
 from sync.admin import SyncedObjectAdmin
 import logging
 
-
 logger = logging.getLogger(__name__)
 
 class CustomUserAdmin(UserAdmin):
@@ -241,6 +240,10 @@ class TournamentAdmin(SyncedObjectAdmin):
             avg_teams=Avg('tournament__team_count')
         )['avg_teams'] or 0
 
+        email_count = PlayerRegistration.objects.aggregate(
+            total=Count('email', distinct=True)
+        )['total']
+
         avg_entry_fee = Tournament.objects.exclude(is_deleted=True).aggregate(
             avg_fee=Avg('entry_fee')
         )['avg_fee'] or 0
@@ -325,6 +328,7 @@ class TournamentAdmin(SyncedObjectAdmin):
             'tournaments_with_payment': tournaments_with_payment,
             'avg_teams_per_tournament': round(avg_teams_per_tournament, 1),
             'avg_entry_fee': round(avg_entry_fee, 2),
+            'email_count': email_count,
 
             # User statistics
             'total_users': total_users,

tournaments/templates/admin/tournaments/dashboard.html

@@ -140,6 +140,10 @@
                     <div style="font-size: 20px; font-weight: bold;">{{ avg_teams_per_tournament }}</div>
                     <div style="opacity: 0.9; font-size: 14px;">Avg Teams/Tournament</div>
                 </div>
+                <div>
+                    <div style="font-size: 20px; font-weight: bold;">{{ avg_teams_per_tournament }}</div>
+                    <div style="opacity: 0.9; font-size: 14px;">Distinct emails</div>
+                </div>
             </div>
         </div>