Update commodity and transaction details and list

Signed-off-by: Alek Ratzloff <alekratz@gmail.com>

trading/views.py

@@ -12,6 +12,7 @@ from django.views.generic.edit import CreateView, UpdateView
 from django.views.generic.list import ListView
 from django.urls import reverse, reverse_lazy
 from django.utils.translation import gettext_lazy as _
+from guardian.mixins import PermissionRequiredMixin
 from trading.models import User, Commodity, MaxCommodityError, TxRequest
 
 
@@ -27,6 +28,26 @@ class CommodityDetailView(DetailView):
     template_name = "trading/c/detail.html"
     model = Commodity
 
+    def get_context_data(self, **kwargs):
+        from django import utils
+        from datetime import timedelta
+        DAY = timedelta(days=1)
+        HOUR = timedelta(hours=1)
+        context = super().get_context_data(**kwargs)
+        now = utils.timezone.now()
+        obj = context["object"]
+        context["trading_volume_all"] = obj.trading_volume()
+        context["trading_volume_day"] = obj.trading_volume(now - DAY)
+        context["trading_volume_hour"] = obj.trading_volume(now - HOUR)
+        context["market_spread_ratio"] = f"{obj.market_spread_ratio*100:.2f}"
+        return context
+
+
+class CommodityListView(ListView):
+    template_name = "trading/c/list.html"
+    model = Commodity
+    paginate_by = 100
+
 
 class CommodityCreateView(LoginRequiredMixin, CreateView):
     template_name = "trading/c/create.html"
@@ -53,9 +74,10 @@ class CommodityCreateView(LoginRequiredMixin, CreateView):
 # Tx views
 ################################################################################
 
-class TxRequestDetailView(DetailView):
+class TxRequestDetailView(PermissionRequiredMixin, DetailView):
     template_name = "trading/t/detail.html"
     model = TxRequest
+    permission_required = "view_txrequest"
 
     def get_context_data(self, **kwargs):
         context = super().get_context_data(**kwargs)