Merge pull request #1691 from matmair/purchase-price-zero

Purchase price zero

InvenTree/part/templates/part/order_prices.html

@@ -137,7 +137,7 @@
     <hr>
     <h4>{% trans 'Stock Pricing' %}<i class="fas fa-info-circle" title="Shows the purchase prices of stock for this part.
 The part single price is the current purchase price for that supplier part."></i></h4>
-    {% if price_history|length > 1 %}
+    {% if price_history|length > 0 %}
         <div style="max-width: 99%; min-height: 300px">
             <canvas id="StockPriceChart"></canvas>
         </div>

InvenTree/part/views.py

@@ -814,7 +814,7 @@ class PartPricingView(PartDetail):
         part = self.get_part()
         # Stock history
         if part.total_stock > 1:
-            ret = []
+            price_history = []
             stock = part.stock_entries(include_variants=False, in_stock=True)  # .order_by('purchase_order__date')
             stock = stock.prefetch_related('purchase_order', 'supplier_part')
 
@@ -841,9 +841,9 @@ class PartPricingView(PartDetail):
                     line['date'] = stock_item.purchase_order.issue_date.strftime('%d.%m.%Y')
                 else:
                     line['date'] = stock_item.tracking_info.first().date.strftime('%d.%m.%Y')
-                ret.append(line)
+                price_history.append(line)
 
-            ctx['price_history'] = ret
+            ctx['price_history'] = price_history
 
         # BOM Information for Pie-Chart
         if part.has_bom:

InvenTree/stock/templates/stock/item_base.html

@@ -325,7 +325,7 @@
         <td><a href="{% url 'po-detail' item.purchase_order.id %}">{{ item.purchase_order }}</a></td>
     </tr>
     {% endif %}
-    {% if item.purchase_price %}
+    {% if item.purchase_price != None %}
     <tr>
         <td><span class='fas fa-dollar-sign'></span></td>
         <td>{% trans "Purchase Price" %}</td>