style(views): minor fix.

tienda_ilusion/don_confiao/views.py

@@ -18,23 +18,28 @@ def index(request):
 def buy(request):
     if request.method == "POST":
         sale_form = PurchaseForm(request.POST)
-        sale_linea_form = SaleLineFormSet(request.POST)
+        line_formset = SaleLineFormSet(request.POST)
         sale_summary_form = PurchaseSummaryForm(request.POST)
-        if sale_form.is_valid() and sale_linea_form.is_valid() and sale_summary_form.is_valid():
+        forms_are_valid = all([
+            sale_form.is_valid(),
+            line_formset.is_valid(),
+            sale_summary_form.is_valid()
+        ])
+        if forms_are_valid:
             sale = sale_form.save()
-            sale_linea_form.instance = sale
-            sale_linea_form.save()
+            line_formset.instance = sale
+            line_formset.save()
             return HttpResponseRedirect("compras")
     else:
         sale_form = PurchaseForm()
-        sale_linea_form = SaleLineFormSet()
+        line_formset = SaleLineFormSet()
         sale_summary_form = PurchaseSummaryForm()
     return render(
         request,
         'don_confiao/purchase.html',
         {
             'sale_form': sale_form,
-            'linea_formset': sale_linea_form,
+            'linea_formset': line_formset,
             'summary_form': sale_summary_form,
         }
     )