use date filter instead of preparing date strings

financeplanner/templates/financeplanner/index.html

@@ -24,20 +24,23 @@
             {% for date, stat in graph_data.items %}
                 {% if stat.div_percentage is None %}
                     <div class="graph-bar weak grey"
-                         onmouseover="showGraphBarDate('{{ stat.date_string }}')"
+                         onmouseover="showGraphBarDate('{{ date|date:"d.m.y" }}')"
                          onmouseleave="clearGraphBarDate()">
                     </div>
                 {% else %}
                     <div class="graph-bar {{ stat.div_opacity_class }} {{ stat.div_color_class }}"
                          style="height: {{ stat.div_percentage }}%"
-                         onmouseover="showGraphBarDate('{{ stat.date_string }}')"
+                         onmouseover="showGraphBarDate('{{ date|date:"d.m.y" }}')"
                          onmouseleave="clearGraphBarDate()">
                     </div>
                 {% endif %}
             {% endfor %}
         </div>
     {% else %}
-        <p>No enough data from {{ range_start }} til {{ range_end }} to show a graph.</p>
+        <p>
+            No enough data from {{ range_start|date:"d.m.y" }} til
+            {{ range_end|date:"d.m.y" }} to show a graph.
+        </p>
     {% endif %}
 </div>
 
@@ -54,7 +57,7 @@
             <tbody>
             {% for balance in balance_list %}
                 <tr>
-                    <td>{{ balance.date }}</td>
+                    <td>{{ balance.date|date:"d.m.y" }}</td>
                     <td>{{ balance.amount }}</td>
                 </tr>
             {% endfor %}
@@ -83,9 +86,9 @@
                 <tr>
                     <td>{{ transaction.subject }}</td>
                     <td>{{ transaction.amount }}</td>
-                    <td>{{ transaction.booking_date }}</td>
+                    <td>{{ transaction.booking_date|date:"d.m.y" }}</td>
                     <td>{{ transaction.recurring_months }}</td>
-                    <td>{{ transaction.not_recurring_after }}</td>
+                    <td>{{ transaction.not_recurring_after|date:"d.m.y" }}</td>
                 </tr>
             {% endfor %}
             </tbody>
@@ -109,7 +112,7 @@
             <tbody>
             {% for date, subject, amount in actual_transactions %}
                 <tr>
-                    <td>{{ date }}</td>
+                    <td>{{ date|date:"d.m.y" }}</td>
                     <td>{{ subject }}</td>
                     <td>{{ amount }}</td>
                 </tr>

financeplanner/utils.py

@@ -8,10 +8,6 @@ def current_date():
     return datetime.now().date()
 
 
-def format_date(d):
-    return d.strftime("%d.%m.%Y")
-
-
 def round_with_dec_places(number, places):
     if number is None:
         return None

financeplanner/views.py

@@ -7,8 +7,6 @@ from django.contrib.auth.decorators import login_required
 from django.db.models import Q
 from django.shortcuts import render
 
-from financeplanner.utils import format_date
-
 
 def _get_relevant_balances(user, range_start, range_end):
     balance_list = []
@@ -151,7 +149,6 @@ def _build_graph_data(range_start, range_end, calculation_start, balance_list, a
     stats = _trim_stats(stats, range_start)
     amount_limit = _calculate_scale(stats)
     for date in stats.keys():
-        stats[date]["date_string"] = format_date(date)
         amount = stats[date]["amount"]
         if amount is None:
             stats[date]["div_percentage"] = None
@@ -194,8 +191,8 @@ def index(request):
     else:
         graph_data = None
     context = {
-        "range_start": format_date(range_start),
+        "range_start": range_start,
-        "range_end": format_date(range_end),
+        "range_end": range_end,
         "today": today,
         "balance_list": balance_list,
         "transaction_list": transaction_list,