Version 1.5.1

Fixes #65

```python
def test_specific_precise_if_unncessary(self):
        delta = timedelta(hours=2, minutes=40)
        result = format_duration(delta, "%02.0H:%02.0m")
        self.assertEqual(result, "02:40")
```
This test fails by returning "03:40" instead. The problem is in the way `format_duration` handles fractional hours.
To fix it, we need to switch between using hours and fractional hours
depending on if minutes are present in the formatted string.

.drone.yml

@@ -10,6 +10,7 @@ steps:
     - python -m pip install poetry
     - poetry install
     - poetry env info
+    - poetry run python manage.py migrate
     - poetry run pytest
 
 - name: build-prod

CHANGELOG.md

@@ -1,3 +1,22 @@
+## 1.5.1 / 2023-11-14 21:10+01:00
+
+## Improved
+* Disallow choosing non-game purchase as related purchase
+* Improve display of purchases
+
+## 1.5.0 / 2023-11-14 19:27+01:00
+
+## New
+* Add stat for finished this year's games
+* Add purchase types:
+  * Game (previously all of them were this type)
+  * DLC
+  * Season Pass
+  * Battle Pass
+
+## Fixed
+* Order purchases by date on game view
+
 ## 1.4.0 / 2023-11-09 21:01+01:00
 
 ### New

Dockerfile

@@ -6,7 +6,7 @@ RUN npm install && \
 
 FROM python:3.10.9-slim-bullseye
 
-ENV VERSION_NUMBER 1.4.0
+ENV VERSION_NUMBER 1.5.1
 ENV PROD 1
 ENV PYTHONUNBUFFERED=1
 

common/input.css

@@ -66,6 +66,12 @@ textarea {
   @apply dark:border dark:border-slate-900 dark:bg-slate-500 dark:text-slate-100;
 }
 
+form input:disabled,
+select:disabled,
+textarea:disabled {
+  @apply dark:bg-slate-700 dark:text-slate-400;
+}
+
 @media screen and (min-width: 768px) {
   form input,
   select,

common/time.py

@@ -44,7 +44,7 @@ def format_duration(
     # timestamps where end is before start
     if seconds_total < 0:
         seconds_total = 0
-    days = hours = minutes = seconds = 0
+    days = hours = hours_float = minutes = seconds = 0
     remainder = seconds = seconds_total
     if "%d" in format_string:
         days, remainder = divmod(seconds_total, day_seconds)
@@ -55,7 +55,7 @@ def format_duration(
         minutes, seconds = divmod(remainder, minute_seconds)
     literals = {
         "d": str(days),
-        "H": str(hours),
+        "H": str(hours) if "m" not in format_string else str(hours_float),
         "m": str(minutes),
         "s": str(seconds),
         "r": str(seconds_total),

games/forms.py

@@ -55,6 +55,11 @@ class PurchaseForm(forms.ModelForm):
         widget=IncludePlatformSelect(attrs={"autoselect": "autoselect"}),
     )
     platform = forms.ModelChoiceField(queryset=Platform.objects.order_by("name"))
+    related_purchase = forms.ModelChoiceField(
+        queryset=Purchase.objects.filter(type=Purchase.GAME).order_by(
+            "edition__sort_name"
+        )
+    )
 
     class Meta:
         widgets = {
@@ -72,6 +77,9 @@ class PurchaseForm(forms.ModelForm):
             "price",
             "price_currency",
             "ownership_type",
+            "type",
+            "related_purchase",
+            "name",
         ]
 
 

games/migrations/0026_purchase_type.py

@@ -0,0 +1,27 @@
+# Generated by Django 4.1.5 on 2023-11-14 08:35
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ("games", "0025_game_sort_name"),
+    ]
+
+    operations = [
+        migrations.AddField(
+            model_name="purchase",
+            name="type",
+            field=models.CharField(
+                choices=[
+                    ("game", "Game"),
+                    ("dlc", "DLC"),
+                    ("season_pass", "Season Pass"),
+                    ("battle_pass", "Battle Pass"),
+                ],
+                default="game",
+                max_length=255,
+            ),
+        ),
+    ]

games/migrations/0027_purchase_related_purchase.py

@@ -0,0 +1,25 @@
+# Generated by Django 4.1.5 on 2023-11-14 08:41
+
+from django.db import migrations, models
+import django.db.models.deletion
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ("games", "0026_purchase_type"),
+    ]
+
+    operations = [
+        migrations.AddField(
+            model_name="purchase",
+            name="related_purchase",
+            field=models.ForeignKey(
+                blank=True,
+                default=None,
+                null=True,
+                on_delete=django.db.models.deletion.SET_NULL,
+                to="games.purchase",
+            ),
+        ),
+    ]

games/migrations/0028_purchase_name.py

@@ -0,0 +1,25 @@
+# Generated by Django 4.1.5 on 2023-11-14 11:05
+
+from django.db import migrations, models
+from games.models import Purchase
+
+
+def null_game_name(apps, schema_editor):
+    Purchase.objects.filter(type=Purchase.GAME).update(name=None)
+
+
+class Migration(migrations.Migration):
+    dependencies = [
+        ("games", "0027_purchase_related_purchase"),
+    ]
+
+    operations = [
+        migrations.AddField(
+            model_name="purchase",
+            name="name",
+            field=models.CharField(
+                blank=True, default="Unknown Name", max_length=255, null=True
+            ),
+        ),
+        migrations.RunPython(null_game_name),
+    ]

games/models.py

@@ -71,6 +71,9 @@ class PurchaseQueryset(models.QuerySet):
     def finished(self):
         return self.filter(date_finished__isnull=False)
 
+    def games_only(self):
+        return self.filter(type=Purchase.GAME)
+
 
 class Purchase(models.Model):
     PHYSICAL = "ph"
@@ -91,6 +94,16 @@ class Purchase(models.Model):
         (DEMO, "Demo"),
         (PIRATED, "Pirated"),
     ]
+    GAME = "game"
+    DLC = "dlc"
+    SEASONPASS = "season_pass"
+    BATTLEPASS = "battle_pass"
+    TYPES = [
+        (GAME, "Game"),
+        (DLC, "DLC"),
+        (SEASONPASS, "Season Pass"),
+        (BATTLEPASS, "Battle Pass"),
+    ]
 
     objects = PurchaseQueryset().as_manager()
 
@@ -106,12 +119,32 @@ class Purchase(models.Model):
     ownership_type = models.CharField(
         max_length=2, choices=OWNERSHIP_TYPES, default=DIGITAL
     )
+    type = models.CharField(max_length=255, choices=TYPES, default=GAME)
+    name = models.CharField(
+        max_length=255, default="Unknown Name", null=True, blank=True
+    )
+    related_purchase = models.ForeignKey(
+        "Purchase", on_delete=models.SET_NULL, default=None, null=True, blank=True
+    )
 
     def __str__(self):
-        platform_info = self.platform
+        additional_info = [
-        if self.platform != self.edition.platform:
+            self.get_type_display() if self.type != Purchase.GAME else "",
-            platform_info = f"{self.edition.platform} version on {self.platform}"
+            f"{self.edition.platform} version on {self.platform}"
-        return f"{self.edition} ({platform_info}, {self.edition.year_released}, {self.get_ownership_type_display()})"
+            if self.platform != self.edition.platform
+            else self.platform,
+            self.edition.year_released,
+            self.get_ownership_type_display(),
+        ]
+        return f"{self.edition} ({', '.join(filter(None, map(str, additional_info)))})"
+
+    def is_game(self):
+        return self.type == self.GAME
+
+    def save(self, *args, **kwargs):
+        if self.type == Purchase.GAME:
+            self.name = ""
+        super().save(*args, **kwargs)
 
 
 class Platform(models.Model):
@@ -151,7 +184,7 @@ class Session(models.Model):
     objects = SessionQuerySet.as_manager()
 
     def __str__(self):
-        mark = ", manual" if self.duration_manual != None else ""
+        mark = ", manual" if self.is_manual() else ""
         return f"{str(self.purchase)} {str(self.timestamp_start.date())} ({self.duration_formatted()}{mark})"
 
     def finish_now(self):
@@ -163,7 +196,7 @@ class Session(models.Model):
     def duration_seconds(self) -> timedelta:
         manual = timedelta(0)
         calculated = timedelta(0)
-        if not self.duration_manual in (None, 0, timedelta(0)):
+        if self.is_manual():
             manual = self.duration_manual
         if self.timestamp_end != None and self.timestamp_start != None:
             calculated = self.timestamp_end - self.timestamp_start
@@ -173,6 +206,9 @@ class Session(models.Model):
         result = format_duration(self.duration_seconds(), "%02.0H:%02.0m")
         return result
 
+    def is_manual(self) -> bool:
+        return not self.duration_manual == timedelta(0)
+
     @property
     def duration_sum(self) -> str:
         return Session.objects.all().total_duration_formatted()

games/static/base.css

@@ -1222,6 +1222,15 @@ textarea) {
   color: rgb(241 245 249 / var(--tw-text-opacity));
 }
 
+:is(.dark form input:disabled),:is(.dark 
+select:disabled),:is(.dark 
+textarea:disabled) {
+  --tw-bg-opacity: 1;
+  background-color: rgb(51 65 85 / var(--tw-bg-opacity));
+  --tw-text-opacity: 1;
+  color: rgb(148 163 184 / var(--tw-text-opacity));
+}
+
 @media screen and (min-width: 768px) {
   form input,
   select,
@@ -1428,6 +1437,10 @@ th label {
     padding-left: 1rem;
   }
 
+  .sm\:pl-6 {
+    padding-left: 1.5rem;
+  }
+
   .sm\:decoration-2 {
     text-decoration-thickness: 2px;
   }

games/static/js/add_purchase.js

@@ -1,12 +1,30 @@
-import { syncSelectInputUntilChanged } from './utils.js'
+import {
+  syncSelectInputUntilChanged,
+  getEl,
+  disableElementsWhenTrue,
+  disableElementsWhenFalse,
+} from "./utils.js";
 
 let syncData = [
   {
-    "source": "#id_edition",
+    source: "#id_edition",
-    "source_value": "dataset.platform",
+    source_value: "dataset.platform",
-    "target": "#id_platform",
+    target: "#id_platform",
-    "target_value": "value"
+    target_value: "value",
-  }
+  },
-]
+];
 
-syncSelectInputUntilChanged(syncData, "form")
+syncSelectInputUntilChanged(syncData, "form");
+
+function setupElementHandlers() {
+  disableElementsWhenTrue("#id_type", "game", [
+    "#id_name",
+    "#id_related_purchase",
+  ]);
+  disableElementsWhenFalse("#id_type", "game", ["#id_date_finished"]);
+}
+
+document.addEventListener("DOMContentLoaded", setupElementHandlers);
+getEl("#id_type").onchange = () => {
+  setupElementHandlers();
+};

games/static/js/utils.js

@@ -87,4 +87,84 @@ function getValueFromProperty(sourceElement, property) {
   }
 }
 
-export { toISOUTCString, syncSelectInputUntilChanged };
+/**
+ * @description Returns a single element by name.
+ * @param {string} selector The selector to look for.
+ */
+function getEl(selector) {
+  if (selector.startsWith("#")) {
+    return document.getElementById(selector.slice(1))
+  }
+  else if (selector.startsWith(".")) {
+    return document.getElementsByClassName(selector)
+  }
+  else {
+    return document.getElementsByTagName(selector)
+  }
+}
+
+/**
+ * @description Applies different behaviors to elements based on multiple conditional configurations.
+ * Each configuration is an array containing a condition function, an array of target element selectors,
+ * and two callback functions for handling matched and unmatched conditions.
+ * @param {...Array} configs Each configuration is an array of the form:
+ *   - 0: {function(): boolean} condition - Function that returns true or false based on a condition.
+ *   - 1: {string[]} targetElements - Array of CSS selectors for target elements.
+ *   - 2: {function(HTMLElement): void} callbackfn1 - Function to execute when condition is true.
+ *   - 3: {function(HTMLElement): void} callbackfn2 - Function to execute when condition is false.
+ */
+function conditionalElementHandler(...configs) {
+  configs.forEach(([condition, targetElements, callbackfn1, callbackfn2]) => {
+    if (condition()) {
+      targetElements.forEach(elementName => {
+        let el = getEl(elementName);
+        if (el === null) {
+          console.error(`Element ${elementName} doesn't exist.`);
+        } else {
+          callbackfn1(el);
+        }
+      });
+    } else {
+      targetElements.forEach(elementName => {
+        let el = getEl(elementName);
+        if (el === null) {
+          console.error(`Element ${elementName} doesn't exist.`);
+        } else {
+          callbackfn2(el);
+        }
+      });
+    }
+  });
+}
+
+function disableElementsWhenFalse(targetSelect, targetValue, elementList) {
+  return conditionalElementHandler([
+    () => {
+      return getEl(targetSelect).value != targetValue;
+    },
+    elementList,
+    (el) => {
+      el.disabled = "disabled";
+    },
+    (el) => {
+      el.disabled = "";
+    },
+  ]);
+}
+
+function disableElementsWhenTrue(targetSelect, targetValue, elementList) {
+  return conditionalElementHandler([
+    () => {
+      return getEl(targetSelect).value == targetValue;
+    },
+    elementList,
+    (el) => {
+      el.disabled = "disabled";
+    },
+    (el) => {
+      el.disabled = "";
+    },
+  ]);
+}
+
+export { toISOUTCString, syncSelectInputUntilChanged, getEl, conditionalElementHandler, disableElementsWhenFalse, disableElementsWhenTrue, getValueFromProperty };

games/templates/stats.html

@@ -45,6 +45,10 @@
                             <td class="px-2 sm:px-4 md:px-6 md:py-2">Finished</td>
                             <td class="px-2 sm:px-4 md:px-6 md:py-2 font-mono">{{ all_finished_this_year.count }}</td>
                         </tr>
+                        <tr>
+                            <td class="px-2 sm:px-4 md:px-6 md:py-2">Finished ({{ year }})</td>
+                            <td class="px-2 sm:px-4 md:px-6 md:py-2 font-mono">{{ this_year_finished_this_year.count }}</td>
+                        </tr>
                     </tbody>
                 </table>
             </div>
@@ -177,7 +181,14 @@
             <tbody>
                 {% for purchase in all_purchased_this_year %}
                 <tr>
-                    <td class="px-2 sm:px-4 md:px-6 md:py-2 font-mono"><a class="underline decoration-slate-500 sm:decoration-2" href="{% url 'edit_purchase' purchase.id %}">{{ purchase.edition.name }}</a></td>
+                    <td class="px-2 sm:px-4 md:px-6 md:py-2 font-mono">
+                        <a class="underline decoration-slate-500 sm:decoration-2" href="{% url 'edit_purchase' purchase.id %}">
+                            {{ purchase.edition.name }}
+                        {% if purchase.type != "game" %}
+                        ({{ purchase.name }}, {{ purchase.get_type_display }})
+                        {% endif %}
+                        </a>
+                    </td>
                     <td class="px-2 sm:px-4 md:px-6 md:py-2 font-mono">{{ purchase.price }}</td>
                     <td class="px-2 sm:px-4 md:px-6 md:py-2 font-mono">{{ purchase.date_purchased | date:"d/m/Y" }}</td>
                 </tr>

games/templates/view_game.html

@@ -42,6 +42,19 @@
                 ({{ purchase.get_ownership_type_display }}, {{ purchase.date_purchased | date:"Y" }}, {{ purchase.price }} {{ purchase.price_currency}})
                 {% url 'edit_purchase' purchase.id as edit_url %}
                 {% include 'components/edit_button.html' with edit_url=edit_url %}
+                {% if purchase.related_purchases %}
+                    <li>
+                        <ul>
+                            {% for related_purchase in purchase.related_purchases %}
+                                <li class="sm:pl-6 flex items-center">
+                                    {{ related_purchase.name}} ({{ related_purchase.get_type_display }}, {{ related_purchase.date_purchased | date:"Y" }}, {{ related_purchase.price }} {{ related_purchase.price_currency}})
+                                    {% url 'edit_purchase' related_purchase.id as edit_url %}
+                                    {% include 'components/edit_button.html' with edit_url=edit_url %}
+                                </li>
+                            {% endfor %}
+                        </ul>
+                    </li>
+                {% endif %}
             </li>
             {% endfor %}
         </ul>

games/urls.py

@@ -11,7 +11,6 @@ urlpatterns = [
         name="list_sessions_recent",
     ),
     path("add-game/", views.add_game, name="add_game"),
-    path("add-game-unified/", views.add_game_unified, name="add_game_unified"),
     path("add-platform/", views.add_platform, name="add_platform"),
     path("add-session/", views.add_session, name="add_session"),
     path(

games/views.py

@@ -32,7 +32,12 @@ def model_counts(request):
 
 
 def stats_dropdown_year_range(request):
-    return {"stats_dropdown_year_range": range(2018, 2024)}
+    result = {
+        "stats_dropdown_year_range": range(
+            datetime.now(ZoneInfo(settings.TIME_ZONE)).year, 1999, -1
+        )
+    }
+    return result
 
 
 def add_session(request, purchase_id=None):
@@ -113,7 +118,8 @@ def edit_purchase(request, purchase_id=None):
         return redirect("list_sessions")
     context["title"] = "Edit Purchase"
     context["form"] = form
-    return render(request, "add.html", context)
+    context["script_name"] = "add_purchase.js"
+    return render(request, "add_purchase.html", context)
 
 
 @use_custom_redirect
@@ -135,7 +141,17 @@ def view_game(request, game_id=None):
     context["title"] = "View Game"
     context["game"] = game
     context["editions"] = Edition.objects.filter(game_id=game_id)
-    context["purchases"] = Purchase.objects.filter(edition__game_id=game_id)
+    game_purchases = (
+        Purchase.objects.filter(edition__game_id=game_id)
+        .filter(type=Purchase.GAME)
+        .order_by("date_purchased")
+    )
+    for purchase in game_purchases:
+        purchase.related_purchases = Purchase.objects.exclude(
+            type=Purchase.GAME
+        ).filter(related_purchase=purchase.id)
+
+    context["purchases"] = game_purchases
     context["sessions"] = Session.objects.filter(
         purchase__edition__game_id=game_id
     ).order_by("-timestamp_start")
@@ -307,7 +323,9 @@ def stats(request, year: int = 0):
 
     this_year_purchases_unfinished = this_year_purchases_without_refunded.filter(
         date_finished__isnull=True
-    )
+    ).filter(
+        type=Purchase.GAME
+    )  # do not count DLC etc.
 
     this_year_purchases_unfinished_percent = int(
         safe_division(
@@ -331,7 +349,7 @@ def stats(request, year: int = 0):
     this_year_spendings = this_year_purchases_without_refunded.aggregate(
         total_spent=Sum(F("price"))
     )
-    total_spent = this_year_spendings["total_spent"]
+    total_spent = this_year_spendings["total_spent"] or 0
 
     games_with_playtime = (
         Game.objects.filter(edition__purchase__session__in=this_year_sessions)
@@ -380,9 +398,15 @@ def stats(request, year: int = 0):
         "spent_per_game": int(
             safe_division(total_spent, this_year_purchases_without_refunded.count())
         ),
-        "all_finished_this_year": purchases_finished_this_year,
+        "all_finished_this_year": purchases_finished_this_year.order_by(
-        "this_year_finished_this_year": purchases_finished_this_year_released_this_year,
+            "date_finished"
-        "purchased_this_year_finished_this_year": purchased_this_year_finished_this_year,
+        ),
+        "this_year_finished_this_year": purchases_finished_this_year_released_this_year.order_by(
+            "date_finished"
+        ),
+        "purchased_this_year_finished_this_year": purchased_this_year_finished_this_year.order_by(
+            "date_finished"
+        ),
         "total_sessions": this_year_sessions.count(),
         "unique_days": unique_days["dates"],
         "unique_days_percent": int(unique_days["dates"] / 365 * 100),
@@ -477,7 +501,12 @@ def add_edition(request, game_id=None):
         if game_id:
             game = Game.objects.get(id=game_id)
             form = EditionForm(
-                initial={"game": game, "name": game.name, "sort_name": game.sort_name}
+                initial={
+                    "game": game,
+                    "name": game.name,
+                    "sort_name": game.sort_name,
+                    "year_released": game.year_released,
+                }
             )
         else:
             form = EditionForm()

pyproject.toml

@@ -1,6 +1,6 @@
 [tool.poetry]
 name = "timetracker"
-version = "1.4.0"
+version = "1.5.1"
 description = "A simple time tracker."
 authors = ["Lukáš Kucharczyk <lukas@kucharczyk.xyz>"]
 license = "GPL"

tests/test_paths_return_200.py

@@ -0,0 +1,89 @@
+import django
+import os
+from django.test import TestCase
+from django.urls import reverse
+from datetime import datetime
+from zoneinfo import ZoneInfo
+
+os.environ.setdefault("DJANGO_SETTINGS_MODULE", "timetracker.settings")
+django.setup()
+from django.conf import settings
+
+from games.models import Game, Edition, Purchase, Session, Platform
+
+ZONEINFO = ZoneInfo(settings.TIME_ZONE)
+
+
+class PathWorksTest(TestCase):
+    def setUp(self) -> None:
+        pl = Platform(name="Test Platform")
+        pl.save()
+        g = Game(name="The Test Game")
+        g.save()
+        e = Edition(game=g, name="The Test Game Edition", platform=pl)
+        e.save()
+        p = Purchase(
+            edition=e,
+            platform=pl,
+            date_purchased=datetime(2022, 9, 26, 14, 58, tzinfo=ZONEINFO),
+        )
+        p.save()
+        s = Session(
+            purchase=p,
+            timestamp_start=datetime(2022, 9, 26, 14, 58, tzinfo=ZONEINFO),
+            timestamp_end=datetime(2022, 9, 26, 17, 38, tzinfo=ZONEINFO),
+        )
+        s.save()
+        self.testSession = s
+        return super().setUp()
+
+    def test_add_device_returns_200(self):
+        url = reverse("add_device")
+        response = self.client.get(url)
+        self.assertEqual(response.status_code, 200)
+
+    def test_add_platform_returns_200(self):
+        url = reverse("add_platform")
+        response = self.client.get(url)
+        self.assertEqual(response.status_code, 200)
+
+    def test_add_game_returns_200(self):
+        url = reverse("add_game")
+        response = self.client.get(url)
+        self.assertEqual(response.status_code, 200)
+
+    def test_add_edition_returns_200(self):
+        url = reverse("add_edition")
+        response = self.client.get(url)
+        self.assertEqual(response.status_code, 200)
+
+    def test_add_purchase_returns_200(self):
+        url = reverse("add_purchase")
+        response = self.client.get(url)
+        self.assertEqual(response.status_code, 200)
+
+    def test_add_session_returns_200(self):
+        url = reverse("add_session")
+        response = self.client.get(url)
+        self.assertEqual(response.status_code, 200)
+
+    def test_edit_session_returns_200(self):
+        id = self.testSession.id
+        url = reverse("edit_session", args=[id])
+        response = self.client.get(url)
+        self.assertEqual(response.status_code, 200)
+
+    def test_view_game_returns_200(self):
+        url = reverse("view_game", args=[1])
+        response = self.client.get(url)
+        self.assertEqual(response.status_code, 200)
+
+    def test_edit_game_returns_200(self):
+        url = reverse("edit_game", args=[1])
+        response = self.client.get(url)
+        self.assertEqual(response.status_code, 200)
+
+    def test_list_sessions_returns_200(self):
+        url = reverse("list_sessions")
+        response = self.client.get(url)
+        self.assertEqual(response.status_code, 200)

tests/test_session_formatting.py

@@ -0,0 +1,38 @@
+import django
+import os
+from django.test import TestCase
+from django.db import models
+from datetime import datetime
+from zoneinfo import ZoneInfo
+
+os.environ.setdefault("DJANGO_SETTINGS_MODULE", "timetracker.settings")
+django.setup()
+from django.conf import settings
+from games.models import Game, Edition, Purchase, Session
+
+ZONEINFO = ZoneInfo(settings.TIME_ZONE)
+
+
+class FormatDurationTest(TestCase):
+    def setUp(self) -> None:
+        return super().setUp()
+
+    def test_duration_format(self):
+        g = Game(name="The Test Game")
+        g.save()
+        e = Edition(game=g, name="The Test Game Edition")
+        e.save()
+        p = Purchase(
+            edition=e, date_purchased=datetime(2022, 9, 26, 14, 58, tzinfo=ZONEINFO)
+        )
+        p.save()
+        s = Session(
+            purchase=p,
+            timestamp_start=datetime(2022, 9, 26, 14, 58, tzinfo=ZONEINFO),
+            timestamp_end=datetime(2022, 9, 26, 17, 38, tzinfo=ZONEINFO),
+        )
+        s.save()
+        self.assertEqual(
+            s.duration_formatted(),
+            "02:40",
+        )

tests/test_time.py

@@ -83,6 +83,16 @@ class FormatDurationTest(unittest.TestCase):
         result = format_duration(delta, "%r seconds")
         self.assertEqual(result, "0 seconds")
 
+    def test_specific(self):
+        delta = timedelta(hours=2, minutes=40)
+        result = format_duration(delta, "%H:%m")
+        self.assertEqual(result, "2:40")
+
+    def test_specific_precise_if_unncessary(self):
+        delta = timedelta(hours=2, minutes=40)
+        result = format_duration(delta, "%02.0H:%02.0m")
+        self.assertEqual(result, "02:40")
+
     def test_all_at_once(self):
         delta = timedelta(days=50, hours=10, minutes=34, seconds=24)
         result = format_duration(

timetracker/settings.py

@@ -150,5 +150,3 @@ if _csrf_trusted_origins:
     CSRF_TRUSTED_ORIGINS = _csrf_trusted_origins.split(",")
 else:
     CSRF_TRUSTED_ORIGINS = []
-
-USE_L10N = False