Adds LogEntry in the django admin

tournaments/admin.py

@@ -1,7 +1,10 @@
 from django.contrib import admin
-
 from django.contrib.auth.admin import UserAdmin
 from django.utils import timezone
+from django.contrib.admin.models import LogEntry, ADDITION, CHANGE, DELETION
+from django.utils.html import escape
+from django.urls import reverse
+from django.utils.safestring import mark_safe
 
 from .models import Club, TeamScore, Tournament, CustomUser, Event, Round, GroupStage, Match, TeamRegistration, PlayerRegistration, Purchase, Court, DateInterval, FailedApiCall, Log, DeviceToken, DrawLog, UnregisteredTeam, UnregisteredPlayer
 from .forms import CustomUserCreationForm, CustomUserChangeForm
@@ -154,6 +157,50 @@ class UnregisteredPlayerAdmin(admin.ModelAdmin):
     list_filter = []
     ordering = ['last_name', 'first_name']
 
+
+action_flags = {
+    ADDITION: 'Addition',
+    CHANGE: 'Change',
+    DELETION: 'Deletion',
+}
+
+@admin.register(LogEntry)
+class LogEntryAdmin(admin.ModelAdmin):
+    date_hierarchy = 'action_time'
+    list_filter = ['user', 'content_type', 'action_flag']
+    search_fields = ['object_repr', 'change_message']
+    list_display = ['action_time', 'user', 'content_type', 'object_link', 'action_flag_display', 'change_message']
+    readonly_fields = [field.name for field in LogEntry._meta.get_fields()]
+
+    def has_add_permission(self, request):
+        return False
+
+    def has_change_permission(self, request, obj=None):
+        return False
+
+    def has_delete_permission(self, request, obj=None):
+        return False
+
+    def object_link(self, obj):
+        if obj.action_flag == DELETION:
+            link = escape(obj.object_repr)
+        else:
+            ct = obj.content_type
+            try:
+                link = '<a href="%s">%s</a>' % (
+                    reverse('admin:%s_%s_change' % (ct.app_label, ct.model),
+                            args=[obj.object_id]),
+                    escape(obj.object_repr),
+                )
+            except:
+                link = escape(obj.object_repr)
+        return mark_safe(link)
+    object_link.short_description = 'Object'
+
+    def action_flag_display(self, obj):
+        return action_flags.get(obj.action_flag, '')
+    action_flag_display.short_description = 'Action'
+
 admin.site.register(CustomUser, CustomUserAdmin)
 admin.site.register(Club, ClubAdmin)
 admin.site.register(Event, EventAdmin)