Added the accounting_amount template filter and applied it in the cash account.

accounting/templates/accounting/cash.html

@@ -22,6 +22,7 @@ First written: 2020/7/1
 {% endcomment %}
 {% load i18n %}
 {% load humanize %}
+{% load accounting %}
 
 {% block settings %}
   {% blocktrans asvar title with subject=subject.title_zhtw period=period.description context "Accounting|" %}Cash Account for {{ subject }} in {{ period }}{% endblocktrans %}
@@ -106,9 +107,9 @@ First written: 2020/7/1
               {{ text|force_escape }}
             </span>
           {% endif %}</td>
-          <td class="amount">{% if record.credit_amount is not None %}{{ record.credit_amount|intcomma:False }}{% endif %}</td>
-          <td class="amount">{% if record.debit_amount is not None %}{{ record.debit_amount|intcomma:False }}{% endif %}</td>
-          <td class="amount">{{ record.balance|intcomma:False }}</td>
+          <td class="amount">{{ record.credit_amount|accounting_amount }}</td>
+          <td class="amount">{{ record.debit_amount|accounting_amount }}</td>
+          <td class="amount">{{ record.balance|accounting_amount }}</td>
           <td class="actions">
             {% if record.sn is not None %}
               <a href="{{ record.transaction.get_absolute_url }}" class="btn btn-info" role="button">

accounting/templatetags/accounting.py

@@ -0,0 +1,41 @@
+# The accounting application of the Mia project.
+#   by imacat <imacat@mail.imacat.idv.tw>, 2020/7/13
+
+#  Copyright (c) 2020 imacat.
+#
+#  Licensed under the Apache License, Version 2.0 (the "License");
+#  you may not use this file except in compliance with the License.
+#  You may obtain a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+#  Unless required by applicable law or agreed to in writing, software
+#  distributed under the License is distributed on an "AS IS" BASIS,
+#  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+#  See the License for the specific language governing permissions and
+#  limitations under the License.
+
+"""The template tags and filters of the accounting application.
+
+"""
+import re
+
+from django import template
+
+register = template.Library()
+
+
+@register.filter
+def accounting_amount(value):
+    if value is None:
+        return ""
+    print(value)
+    s = str(abs(value))
+    while True:
+        m = re.match("^([1-9][0-9]*)([0-9]{3})", s)
+        if m is None:
+            break
+        s = m.group(1) + "," + m.group(2)
+    if value < 0:
+        s = "(%s)" % (s)
+    return s