add return address for bids in case a sale proceeds

bids/forms.py

@@ -5,7 +5,8 @@ from bids.models import ItemBid
 class CreateItemBidForm(forms.ModelForm):
     class Meta:
         model = ItemBid
-        fields = ['bid_price_xmr']
+        fields = ['bid_price_xmr', 'return_address']
         labels = {
-            'bid_price_xmr': 'Bid Price (XMR)'
+            'bid_price_xmr': 'Bid Price (XMR)',
+            'return_address': 'Return Wallet Address'
         }

bids/migrations/0001_initial.py

@@ -1,5 +1,6 @@
 # Generated by Django 2.2.7 on 2019-12-13 05:46
 
+import core.validators
 from django.conf import settings
 from django.db import migrations, models
 import django.db.models.deletion
@@ -25,6 +26,7 @@ class Migration(migrations.Migration):
                 ('accepted', models.BooleanField(default=False)),
                 ('bidder', models.ForeignKey(on_delete=django.db.models.deletion.CASCADE, related_name='bidder', to=settings.AUTH_USER_MODEL)),
                 ('item', models.ForeignKey(on_delete=django.db.models.deletion.CASCADE, related_name='bids', to='items.Item')),
+                ('return_address', models.CharField(max_length=100, validators=[core.validators.address_is_valid_monero])),
             ],
         ),
     ]

bids/models.py

@@ -1,6 +1,7 @@
 from django.db import models
 from django.contrib.auth.models import User
 from items.models import Item
+from core.validators import address_is_valid_monero
 
 
 class ItemBid(models.Model):
@@ -10,6 +11,7 @@ class ItemBid(models.Model):
     last_updated = models.DateTimeField(auto_now=True)
     bid_price_xmr = models.FloatField()
     accepted = models.BooleanField(default=False)
+    return_address = models.CharField(max_length=100, validators=[address_is_valid_monero])
 
     def __str__(self):
         return f"{self.id} - {self.item.name} - {self.bidder} > {self.item.owner}"

bids/views.py

@@ -56,6 +56,12 @@ def create_bid(request, item_id):
             bid.item = item
             bid.save()
             return HttpResponseRedirect(reverse('get_item', args=[item_id]))
+        else:
+            form_errors = form.errors.get_json_data()
+            for err in form_errors:
+                err_data = form_errors[err][0]
+                messages.error(request, f'{err}: {err_data["message"]}')
+            return HttpResponseRedirect(reverse('create_bid', args=[item_id]))
     else:
         context = {
             'form': CreateItemBidForm(),
@@ -84,6 +90,12 @@ def edit_bid(request, bid_id):
         if form.is_valid():
             form.save()
             return HttpResponseRedirect(reverse('get_item', args=[bid.item.id]))
+        else:
+            form_errors = form.errors.get_json_data()
+            for err in form_errors:
+                err_data = form_errors[err][0]
+                messages.error(request, f'{err}: {err_data["message"]}')
+            return HttpResponseRedirect(reverse('create_bid', args=[bid.item.id]))
     else:
         context = {
             'form': CreateItemBidForm(instance=bid),