add the currency calculation to the index page

django/didgeridoo/webshop/templates/webshop/index.html

@@ -22,7 +22,7 @@
           </td>
           <td scope="col">{{ article.category }}</td>
           <td scope="col">{{ article.stock }}</td>
-          <td scope="col">{{ article.price_in_chf }}</td>
+          <td scope="col">{{ article.price_in_chf }} {{ currency_name }}</td>
         </tr>
       {% endfor %}
     </table>

django/didgeridoo/webshop/templates/webshop/nav.html

@@ -19,24 +19,19 @@
           <a href="{% url 'login' %}">LOGIN</a>
         </li>
         {% endif %}
-        <!-- https://pypi.python.org/pypi/django-select-multiple-field -->
-        <form method="POST" novalidate>
-          <select name="currency_update" id="id_currency_update">
-              <option value="CHF">CHF</option>
-              <option value="USD">USD</option>
-              <option value="GBP">GBP</option>
-              <option value="JPY">JPY</option>
-          </select>
+        <li>
+            {% if article_view %}
+          <form id="currency" name="currency" action="" method="POST" novalidate>
+            {{ currencies_form.as_ul }}
+            <li>
+              <input type="submit" value="Select">
+            </li>
           {% csrf_token %}
-        </form>
+          </form>
+          {% endif %}
+        </li>
       </ul>
     </div>
-    <!--
-    Es wird auf id im app.js file gemached.
-    die URL wird im app.js gesetzt
-    und mit urls.py weitergereicht.
-    dann auf name im views.py gemached und ausgeführt.
-    -->
   </div>
 </nav>
 {% endblock %}

django/didgeridoo/webshop/views.py

@@ -7,6 +7,8 @@ from webshop.models import (Article, Category, ArticleStatus, Person,
                             City, Picture)
 from webshop.forms import RegistrationForm
 
+from currencies.models import ExchangeRate, ExchangeRate_name
+from currencies.forms import CurrenciesForm
 
 
 # Create your views here.
@@ -26,11 +28,40 @@ def get_hidden_status_id():
     return hidden_status.id
 
 
+def index(request):
     category_list = get_categories()
+    articles = Article.objects.all().exclude(status=get_hidden_status_id())
+    articles_list = list(articles)
+    currencies_form = CurrenciesForm
+    rate=ExchangeRate
+    article_view = True
+    currency_name = "CHF"
+
+    if request.method == 'POST':
+        currencies_form = CurrenciesForm(request.POST)
+        if currencies_form.is_valid():
+            cf = currencies_form.cleaned_data
+            if cf['currencies']:
+                selection = cf['currencies']
+                request.session['currency'] = selection.id
+                currency_name=ExchangeRate_name.objects.get(id=selection.id)
+            else:
+                request.session['currency'] = None
+
+    if request.session['currency']:
+        currency = request.session['currency']
+        for idx, article in enumerate(articles_list):
+            article.price_in_chf = rate.exchange(currency, article.price_in_chf)
+            articles_list[idx] = article
+            currency_name=ExchangeRate_name.objects.get(id=currency)
+
     return render(request,
-                  'webshop/index.html',
-                  {'category_list': category_list,
-                   'articles_list': articles_list})
+                'webshop/index.html',
+                {'category_list': category_list,
+                 'articles_list': articles_list,
+                 'currencies_form': currencies_form,
+                 'article_view': article_view,
+                 'currency_name': currency_name})
 
 
 def articles_in_category(request, category_id):