Added the view of the account details in the accounting applications.

accounting/models.py

@@ -63,7 +63,7 @@ class Account(DirtyFieldsMixin, models.Model):
         self.amount = None
         self.is_for_debit = None
         self.is_for_credit = None
-        self.is_in_use = None
+        self._is_in_use = None
         self._is_parent_and_in_use = None
 
     def __str__(self):
@@ -105,6 +105,22 @@ class Account(DirtyFieldsMixin, models.Model):
     def is_parent_and_in_use(self, value):
         self._is_parent_and_in_use = value
 
+    @property
+    def is_in_use(self):
+        """Whether this account is in use.
+
+        Returns:
+            bool: True if this account is in use, or false otherwise.
+        """
+        if self._is_in_use is None:
+            self._is_in_use = self.child_set.count() > 0\
+                              or self.record_set.count() > 0
+        return self._is_in_use
+
+    @is_in_use.setter
+    def is_in_use(self, value):
+        self._is_in_use = value
+
 
 class Transaction(DirtyFieldsMixin, models.Model):
     """An accounting transaction."""

accounting/templates/accounting/account_detail.html

@@ -0,0 +1,173 @@
+{% extends "base.html" %}
+{% comment %}
+The Mia Accounting Application
+account_detail.html: The template for the account detail
+
+ 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.
+
+Author: imacat@mail.imacat.idv.tw (imacat)
+First written: 2020/8/8
+{% endcomment %}
+{% load static %}
+{% load i18n %}
+{% load mia_core %}
+{% load accounting %}
+
+{% block settings %}
+  {% setvar "title" account %}
+{% endblock %}
+
+{% block content %}
+
+{% if account.is_parent_and_in_use %}
+  <div class="alert alert-danger alert-dismissible fade show">
+    <button type="button" class="close" data-dismiss="alert">&times;</button>
+    <strong>{{ _("Error:")|force_escape }}</strong> {{ _("The account is a parent account but is also used in the accounting records.")|force_escape }}
+  </div>
+{% endif %}
+
+<!-- the delete confirmation dialog -->
+<form action="{% url_keep_return "accounting:accounts.delete" account %}" method="post">
+  {% csrf_token %}
+  <!-- The Modal -->
+  <div class="modal" id="del-modal">
+    <div class="modal-dialog">
+      <div class="modal-content">
+
+        <!-- Modal Header -->
+        <div class="modal-header">
+          <h4 class="modal-title">{{ _("Account Deletion Confirmation")|force_escape }}</h4>
+          <button type="button" class="close" data-dismiss="modal">&times;</button>
+        </div>
+
+        <!-- Modal body -->
+        <div class="modal-body">{{ _("Do you really want to delete this account?")|force_escape }}</div>
+
+        <!-- Modal footer -->
+        <div class="modal-footer">
+          <button class="btn btn-danger" type="submit" name="del-confirm">{{ _("Confirm")|force_escape }}</button>
+          <button type="button" class="btn btn-secondary" data-dismiss="modal">{{ _("Cancel")|force_escape }}</button>
+        </div>
+      </div>
+    </div>
+  </div>
+</form>
+
+<div class="btn-group btn-actions">
+  <a class="btn btn-primary" role="button" href="{% if "r" in request.GET %}{{ request.GET.r }}{% else %}{% url "accounting:accounts" %}{% endif %}">
+    <i class="fas fa-chevron-circle-left"></i>
+    {{ _("Back")|force_escape }}
+  </a>
+  <a class="btn btn-primary" role="button" href="{% url "accounting:accounts.edit" account %}">
+    <i class="fas fa-user-cog"></i>
+    {{ _("Setting")|force_escape }}
+  </a>
+  {% if not account.is_in_use %}
+    <button type="button" class="btn btn-secondary d-none d-sm-inline" disabled="disabled" title="{{ _("This account is not used in the accounting records.")|force_escape }}">
+      <i class="fas fa-file-invoice-dollar"></i>
+      {{ _("Ledger")|force_escape }}
+    </button>
+  {% else %}
+    <a class="btn btn-primary d-none d-sm-inline" role="button" href="{% url "accounting:ledger" account "-" %}">
+      <i class="fas fa-file-invoice-dollar"></i>
+      {{ _("Ledger")|force_escape }}
+    </a>
+  {% endif %}
+  <div class="btn-group d-sm-none">
+    <button class="btn btn-primary dropdown-toggle" type="button" data-toggle="dropdown">
+      <i class="fas fa-bars"></i>
+    </button>
+    <div class="dropdown-menu">
+      {% if not account.is_in_use %}
+        <span class="dropdown-item disabled" title="{{ _("This account is not used in the accounting records.")|force_escape }}">
+          <i class="fas fa-file-invoice-dollar"></i>
+          {{ _("Ledger")|force_escape }}
+        </span>
+      {% else %}
+        <a class="dropdown-item" href="{% url "accounting:ledger" account "-" %}">
+          <i class="fas fa-file-invoice-dollar"></i>
+          {{ _("Ledger")|force_escape }}
+        </a>
+      {% endif %}
+    </div>
+  </div>
+  {% if account.is_in_use %}
+    <button class="btn btn-secondary" type="button" disabled="disabled" title="{{ _("This account is in use.")|force_escape }}">
+      <i class="fas fa-trash"></i>
+      {{ _("Delete")|force_escape }}
+    </button>
+  {% else %}
+    <button class="btn btn-danger" type="button" data-toggle="modal" data-target="#del-modal">
+      <i class="fas fa-trash"></i>
+      {{ _("Delete")|force_escape }}
+    </button>
+  {% endif %}
+</div>
+
+<div class="row form-group">
+  <div class="col-sm-2">{{ _("Parent Account:")|force_escape }}</div>
+  <div class="col-sm-10">
+    {% if account.parent %}
+      {{ account.parent }}
+    {% else %}
+      {{ _("Topmost")|force_escape }}
+    {% endif %}
+  </div>
+</div>
+
+<div class="row form-group">
+<div class="col-sm-2">{{ _("Code:")|force_escape }}</div>
+  <div class="col-sm-10">{{ account.code }}</div>
+</div>
+
+<div class="row form-group">
+  <div class="col-sm-2">{{ _("Title:")|force_escape }}</div>
+  <div class="col-sm-10">{{ account.title }}</div>
+</div>
+
+<div class="row form-group">
+  <div class="col-sm-2">{{ _("Child Accounts:")|force_escape }}</div>
+  <div class="col-sm-10">
+    {% for child in account.child_set.all %}
+      <a class="btn btn-primary" type="role" href="{% url_with_return "accounting:accounts.show" child %}">
+        {{ child }}
+      </a>
+    {% empty %}
+      {{ _("This subject is an end-point subject.")|force_escape }}
+    {% endfor %}
+  </div>
+</div>
+
+<div class="row form-group">
+<div class="col-sm-2">{{ _("Created at:")|force_escape }}</div>
+  <div class="col-sm-10">{{ account.created_at }}</div>
+</div>
+
+<div class="row form-group">
+  <div class="col-sm-2">{{ _("Created by:")|force_escape }}</div>
+  <div class="col-sm-10">{{ account.created_by }}</div>
+</div>
+
+<div class="row form-group">
+  <div class="col-sm-2">{{ _("Updated at:")|force_escape }}</div>
+  <div class="col-sm-10">{{ account.updated_at }}</div>
+</div>
+
+<div class="row form-group">
+  <div class="col-sm-2">{{ _("Updated by:")|force_escape }}</div>
+  <div class="col-sm-10">{{ account.updated_by }}</div>
+</div>
+
+{% endblock %}

accounting/urls.py

@@ -101,9 +101,8 @@ urlpatterns = [
          mia_core_views.todo, name="accounts.store"),
     path("accounts/options",
          views.account_options, name="accounts.options"),
-    # TODO: To be done
     path("accounts/<account:account>",
-         mia_core_views.todo, name="accounts.show"),
+         views.AccountView.as_view(), name="accounts.show"),
     # TODO: To be done
     path("accounts/<account:account>/edit",
          mia_core_views.todo, name="accounts.edit"),

accounting/views.py

@@ -34,7 +34,7 @@ from django.utils import timezone
 from django.utils.decorators import method_decorator
 from django.utils.translation import gettext as _, gettext_noop
 from django.views.decorators.http import require_GET, require_POST
-from django.views.generic import RedirectView, ListView
+from django.views.generic import RedirectView, ListView, DetailView
 
 from mia_core.digest_auth import login_required
 from mia_core.period import Period
@@ -1045,6 +1045,14 @@ class AccountListView(ListView):
     context_object_name = "account_list"
 
 
+@method_decorator(require_GET, name="dispatch")
+@method_decorator(login_required, name="dispatch")
+class AccountView(DetailView):
+    """The view of an account."""
+    def get_object(self, queryset=None):
+        return self.request.resolver_match.kwargs["account"]
+
+
 @require_GET
 @login_required
 def account_options(request):