minimal refactoring

django/didgeridoo/currencies/models.py

@@ -1,5 +1,4 @@
 from django.db import models
-from django.core.urlresolvers import reverse
 from decimal import Decimal
 import datetime
 
@@ -21,7 +20,8 @@ class ExchangeRate_date(models.Model):
 class ExchangeRate(models.Model):
     name = models.ForeignKey(ExchangeRate_name)
     date = models.ForeignKey(ExchangeRate_date)
-    exchange_rate_to_chf = models.DecimalField(max_digits=12, decimal_places=5)
+    exchange_rate_to_chf = models.DecimalField(max_digits=12,
+                                               decimal_places=5)
 
     def __str__(self):
         return str(self.name)

django/didgeridoo/currencies/urls.py

@@ -1,6 +1,6 @@
 from django.conf.urls import url
 from currencies.views import currencies, currency_update
-
+from core import views
 
 urlpatterns = [
     url(r'^currencies/$', currencies),

django/didgeridoo/currencies/views.py

@@ -11,11 +11,12 @@ from django.http import JsonResponse
 
 
 def currency_update(request):
+    # https://simpleisbetterthancomplex.com/tutorial/2016/08/29/how-to-work-with-ajax-request-with-django.html
     currency = request.GET.get('currency_update', None)
-    data = {
-        'currency': ExchangeRate.objects.filter(
-            name__name=currency).latest('date')
-    }
+    data = ExchangeRate.objects.filter(
+            name__name=currency
+            ).values('exchange_rate_to_chf'
+                     ).latest('date__date')
     print('currency: ', currency, 'data: ', data)
     return JsonResponse(data)