Merge pull request #1482 from matmair/price-history

Stock price history

InvenTree/InvenTree/static/script/randomColor.min.js

@@ -0,0 +1 @@
+!function(r,e){var n;"object"==typeof exports?(n=e(),"object"==typeof module&&module&&module.exports&&(exports=module.exports=n),exports.randomColor=n):"function"==typeof define&&define.amd?define([],e):r.randomColor=e()}(this,function(){var o=null,s={};r("monochrome",null,[[0,0],[100,0]]),r("red",[-26,18],[[20,100],[30,92],[40,89],[50,85],[60,78],[70,70],[80,60],[90,55],[100,50]]),r("orange",[18,46],[[20,100],[30,93],[40,88],[50,86],[60,85],[70,70],[100,70]]),r("yellow",[46,62],[[25,100],[40,94],[50,89],[60,86],[70,84],[80,82],[90,80],[100,75]]),r("green",[62,178],[[30,100],[40,90],[50,85],[60,81],[70,74],[80,64],[90,50],[100,40]]),r("blue",[178,257],[[20,100],[30,86],[40,80],[50,74],[60,60],[70,52],[80,44],[90,39],[100,35]]),r("purple",[257,282],[[20,100],[30,87],[40,79],[50,70],[60,65],[70,59],[80,52],[90,45],[100,42]]),r("pink",[282,334],[[20,100],[30,90],[40,86],[60,84],[80,80],[90,75],[100,73]]);var i=[],f=function(r){if(void 0!==(r=r||{}).seed&&null!==r.seed&&r.seed===parseInt(r.seed,10))o=r.seed;else if("string"==typeof r.seed)o=function(r){for(var e=0,n=0;n!==r.length&&!(e>=Number.MAX_SAFE_INTEGER);n++)e+=r.charCodeAt(n);return e}(r.seed);else{if(void 0!==r.seed&&null!==r.seed)throw new TypeError("The seed value must be an integer or string");o=null}var e,n;if(null===r.count||void 0===r.count)return function(r,e){switch(e.format){case"hsvArray":return r;case"hslArray":return d(r);case"hsl":var n=d(r);return"hsl("+n[0]+", "+n[1]+"%, "+n[2]+"%)";case"hsla":var t=d(r),a=e.alpha||Math.random();return"hsla("+t[0]+", "+t[1]+"%, "+t[2]+"%, "+a+")";case"rgbArray":return h(r);case"rgb":return"rgb("+h(r).join(", ")+")";case"rgba":var u=h(r),a=e.alpha||Math.random();return"rgba("+u.join(", ")+", "+a+")";default:return function(r){var e=h(r);function n(r){var e=r.toString(16);return 1==e.length?"0"+e:e}return"#"+n(e[0])+n(e[1])+n(e[2])}(r)}}([e=function(r){{if(0<i.length){var e=c(o=function(r){if(isNaN(r)){if("string"==typeof r)if(s[r]){var e=s[r];if(e.hueRange)return e.hueRange}else if(r.match(/^#?([0-9A-F]{3}|[0-9A-F]{6})$/i)){return l(g(r)[0]).hueRange}}else{var n=parseInt(r);if(n<360&&0<n)return l(r).hueRange}return[0,360]}(r.hue)),n=(o[1]-o[0])/i.length,t=parseInt((e-o[0])/n);!0===i[t]?t=(t+2)%i.length:i[t]=!0;var a=(o[0]+t*n)%359,u=(o[0]+(t+1)*n)%359;return(e=c(o=[a,u]))<0&&(e=360+e),e}var o=function(r){if("number"==typeof parseInt(r)){var e=parseInt(r);if(e<360&&0<e)return[e,e]}if("string"==typeof r)if(s[r]){var n=s[r];if(n.hueRange)return n.hueRange}else if(r.match(/^#?([0-9A-F]{3}|[0-9A-F]{6})$/i)){var t=g(r)[0];return[t,t]}return[0,360]}(r.hue);return(e=c(o))<0&&(e=360+e),e}}(r),n=function(r,e){if("monochrome"===e.hue)return 0;if("random"===e.luminosity)return c([0,100]);var n=function(r){return l(r).saturationRange}(r),t=n[0],a=n[1];switch(e.luminosity){case"bright":t=55;break;case"dark":t=a-10;break;case"light":a=55}return c([t,a])}(e,r),function(r,e,n){var t=function(r,e){for(var n=l(r).lowerBounds,t=0;t<n.length-1;t++){var a=n[t][0],u=n[t][1],o=n[t+1][0],s=n[t+1][1];if(a<=e&&e<=o){var i=(s-u)/(o-a);return i*e+(u-i*a)}}return 0}(r,e),a=100;switch(n.luminosity){case"dark":a=t+20;break;case"light":t=(a+t)/2;break;case"random":t=0,a=100}return c([t,a])}(e,n,r)],r);for(var t=r.count,a=[],u=0;u<r.count;u++)i.push(!1);for(r.count=null;t>a.length;)o&&r.seed&&(r.seed+=1),a.push(f(r));return r.count=t,a};function l(r){for(var e in 334<=r&&r<=360&&(r-=360),s){var n=s[e];if(n.hueRange&&r>=n.hueRange[0]&&r<=n.hueRange[1])return s[e]}return"Color not found"}function c(r){if(null===o){var e=Math.random();return e+=.618033988749895,e%=1,Math.floor(r[0]+e*(r[1]+1-r[0]))}var n=r[1]||1,t=r[0]||0,a=(o=(9301*o+49297)%233280)/233280;return Math.floor(t+a*(n-t))}function r(r,e,n){var t=n[0][0],a=n[n.length-1][0],u=n[n.length-1][1],o=n[0][1];s[r]={hueRange:e,lowerBounds:n,saturationRange:[t,a],brightnessRange:[u,o]}}function h(r){var e=r[0];0===e&&(e=1),360===e&&(e=359),e/=360;var n=r[1]/100,t=r[2]/100,a=Math.floor(6*e),u=6*e-a,o=t*(1-n),s=t*(1-u*n),i=t*(1-(1-u)*n),f=256,l=256,c=256;switch(a){case 0:f=t,l=i,c=o;break;case 1:f=s,l=t,c=o;break;case 2:f=o,l=t,c=i;break;case 3:f=o,l=s,c=t;break;case 4:f=i,l=o,c=t;break;case 5:f=t,l=o,c=s}return[Math.floor(255*f),Math.floor(255*l),Math.floor(255*c)]}function g(r){r=3===(r=r.replace(/^#/,"")).length?r.replace(/(.)/g,"$1$1"):r;var e=parseInt(r.substr(0,2),16)/255,n=parseInt(r.substr(2,2),16)/255,t=parseInt(r.substr(4,2),16)/255,a=Math.max(e,n,t),u=a-Math.min(e,n,t),o=a?u/a:0;switch(a){case e:return[(n-t)/u%6*60||0,o,a];case n:return[60*((t-e)/u+2)||0,o,a];case t:return[60*((e-n)/u+4)||0,o,a]}}function d(r){var e=r[0],n=r[1]/100,t=r[2]/100,a=(2-n)*t;return[e,Math.round(n*t/(a<1?a:2-a)*1e4)/100,a/2*100]}return f});

InvenTree/order/fixtures/order.yaml

@@ -50,6 +50,15 @@
     supplier: 3
     status: 40  # Cancelled
 
+  # for pricebreaks
+- model: order.purchaseorder
+  pk: 7
+  fields:
+    reference: '0007'
+    description: 'Another PO'
+    supplier: 2
+    status: 10  # Pending
+
 # Add some line items against PO 0001
 
 # 100 x ACME0001 (M2x4 LPHS)

InvenTree/order/test_api.py

@@ -60,18 +60,18 @@ class PurchaseOrderTest(OrderTest):
     def test_po_list(self):
 
         # List *ALL* PO items
-        self.filter({}, 6)
+        self.filter({}, 7)
 
         # Filter by supplier
         self.filter({'supplier': 1}, 1)
         self.filter({'supplier': 3}, 5)
 
         # Filter by "outstanding"
-        self.filter({'outstanding': True}, 4)
+        self.filter({'outstanding': True}, 5)
         self.filter({'outstanding': False}, 2)
 
         # Filter by "status"
-        self.filter({'status': 10}, 2)
+        self.filter({'status': 10}, 3)
         self.filter({'status': 40}, 1)
 
     def test_overdue(self):
@@ -80,14 +80,14 @@ class PurchaseOrderTest(OrderTest):
         """
 
         self.filter({'overdue': True}, 0)
-        self.filter({'overdue': False}, 6)
+        self.filter({'overdue': False}, 7)
 
         order = PurchaseOrder.objects.get(pk=1)
         order.target_date = datetime.now().date() - timedelta(days=10)
         order.save()
 
         self.filter({'overdue': True}, 1)
-        self.filter({'overdue': False}, 5)
+        self.filter({'overdue': False}, 6)
 
     def test_po_detail(self):
 

InvenTree/order/tests.py

@@ -21,6 +21,7 @@ class OrderTest(TestCase):
     fixtures = [
         'company',
         'supplier_part',
+        'price_breaks',
         'category',
         'part',
         'location',
@@ -63,7 +64,7 @@ class OrderTest(TestCase):
 
         next_ref = PurchaseOrder.getNextOrderNumber()
 
-        self.assertEqual(next_ref, '0007')
+        self.assertEqual(next_ref, '0008')
 
     def test_on_order(self):
         """ There should be 3 separate items on order for the M2x4 LPHS part """
@@ -117,6 +118,39 @@ class OrderTest(TestCase):
         with self.assertRaises(django_exceptions.ValidationError):
             order.add_line_item(sku, 99)
 
+    def test_pricing(self):
+        """ Test functions for adding line items to an order including price-breaks """
+
+        order = PurchaseOrder.objects.get(pk=7)
+
+        self.assertEqual(order.status, PurchaseOrderStatus.PENDING)
+        self.assertEqual(order.lines.count(), 0)
+
+        sku = SupplierPart.objects.get(SKU='ZERGM312')
+        part = sku.part
+
+        # Order the part
+        self.assertEqual(part.on_order, 0)
+
+        # Order 25 with manually set high value
+        pp = sku.get_price(25)
+        order.add_line_item(sku, 25, purchase_price=pp)
+        self.assertEqual(part.on_order, 25)
+        self.assertEqual(order.lines.count(), 1)
+        self.assertEqual(order.lines.first().purchase_price.amount, 200)
+
+        # Add a few, now the pricebreak should adjust although wrong price given
+        order.add_line_item(sku, 10, purchase_price=sku.get_price(25))
+        self.assertEqual(part.on_order, 35)
+        self.assertEqual(order.lines.count(), 1)
+        self.assertEqual(order.lines.first().purchase_price.amount, 8)
+
+        # Order the same part again (it should be merged)
+        order.add_line_item(sku, 100, purchase_price=sku.get_price(100))
+        self.assertEqual(order.lines.count(), 1)
+        self.assertEqual(part.on_order, 135)
+        self.assertEqual(order.lines.first().purchase_price.amount, 1.25)
+
     def test_receive(self):
         """ Test order receiving functions """
 

InvenTree/part/settings.py

@@ -58,7 +58,7 @@ def part_salable_default():
 
 def part_trackable_default():
     """
-    Returns the defualt value fro the 'trackable' field for a Part object
+    Returns the default value for the 'trackable' field for a Part object
     """
 
     return InvenTreeSetting.get_setting('PART_TRACKABLE')

InvenTree/part/templates/part/navbar.html

@@ -69,6 +69,12 @@
     </li>
     {% endif %}
     {% if part.purchaseable and roles.purchase_order.view %}
+    <li class='list-group-item {% if tab == "order-prices" %}active{% endif %}' title='{% trans "Order Price Information" %}'>
+        <a href='{% url "part-order-prices" part.id %}'>
+            <span class='menu-tab-icon fas fa-dollar-sign' style='width: 20px;'></span>
+            {% trans "Order Price" %}
+        </a>
+    </li>
     <li class='list-group-item {% if tab == "manufacturers" %}active{% endif %}' title='{% trans "Manufacturers" %}'>
         <a href='{% url "part-manufacturers" part.id %}'>
             <span class='menu-tab-icon fas fa-industry'></span>

InvenTree/part/templates/part/order_prices.html

@@ -0,0 +1,208 @@
+{% extends "part/part_base.html" %}
+{% load static %}
+{% load i18n %}
+{% load crispy_forms_tags %}
+{% load inventree_extras %}
+
+{% block menubar %}
+{% include 'part/navbar.html' with tab='order-prices' %}
+{% endblock %}
+
+{% block heading %}
+{% trans "Order Price Information" %}
+{% endblock %}
+
+{% block details %}
+{% settings_value "INVENTREE_DEFAULT_CURRENCY" as currency %}
+
+{% crispy form %}
+
+<div class="row"><div class="col col-md-6">
+<h4>{% trans "Pricing ranges" %}</h4>
+<table class='table table-striped table-condensed'>
+{% if part.supplier_count > 0 %}
+    {% if min_total_buy_price %}
+        <tr>
+            <td><b>{% trans 'Supplier Pricing' %}</b></td>
+            <td>{% trans 'Unit Cost' %}</td>
+            <td>Min: {% include "price.html" with price=min_unit_buy_price %}</td>
+            <td>Max: {% include "price.html" with price=max_unit_buy_price %}</td>
+        </tr>
+        {% if quantity > 1 %}
+        <tr>
+            <td></td>
+            <td>{% trans 'Total Cost' %}</td>
+            <td>Min: {% include "price.html" with price=min_total_buy_price %}</td>
+            <td>Max: {% include "price.html" with price=max_total_buy_price %}</td>
+        </tr>
+        {% endif %}
+    {% else %}
+        <tr>
+            <td colspan='4'>
+                <span class='warning-msg'><i>{% trans 'No supplier pricing available' %}</i></span>
+            </td>
+        </tr>
+    {% endif %}
+{% endif %}
+
+{% if part.bom_count > 0 %}
+    {% if min_total_bom_price %}
+        <tr>
+            <td><b>{% trans 'BOM Pricing' %}</b></td>
+            <td>{% trans 'Unit Cost' %}</td>
+            <td>Min: {% include "price.html" with price=min_unit_bom_price %}</td>
+            <td>Max: {% include "price.html" with price=max_unit_bom_price %}</td>
+        </tr>
+        {% if quantity > 1 %}
+            <tr>
+                <td></td>
+                <td>{% trans 'Total Cost' %}</td>
+                <td>Min: {% include "price.html" with price=min_total_bom_price %}</td>
+                <td>Max: {% include "price.html" with price=max_total_bom_price %}</td>
+            </tr>
+        {% endif %}
+        {% if part.has_complete_bom_pricing == False %}
+            <tr>
+                <td colspan='4'>
+                    <span class='warning-msg'><i>{% trans 'Note: BOM pricing is incomplete for this part' %}</i></span>
+                </td>
+            </tr>
+        {% endif %}
+    {% else %}
+        <tr>
+            <td colspan='4'>
+                <span class='warning-msg'><i>{% trans 'No BOM pricing available' %}</i></span>
+            </td>
+        </tr>
+    {% endif %}
+{% endif %}
+
+{% if total_part_price %}
+    <tr>
+        <td><b>{% trans 'Sale Price' %}</b></td>
+        <td>{% trans 'Unit Cost' %}</td>
+        <td colspan='2'>{% include "price.html" with price=unit_part_price %}</td>
+    </tr>
+    <tr>
+        <td></td>
+        <td>{% trans 'Total Cost' %}</td>
+        <td colspan='2'>{% include "price.html" with price=total_part_price %}</td>
+    </tr>
+{% endif %}
+</table>
+
+{% if min_unit_buy_price or min_unit_bom_price %}
+{% else %}
+    <div class='alert alert-danger alert-block'>
+        {% trans 'No pricing information is available for this part.' %}
+    </div>
+{% endif %}
+</div>
+{% if part.bom_count > 0 %}
+<div class="col col-md-6">
+    <h4>{% trans 'BOM Pricing' %}</h4>
+    <div style="max-width: 99%;">
+        <canvas id="BomChart"></canvas>
+    </div>
+</div>
+{% endif %}
+</div>
+
+{% if price_history %}
+    <hr>
+    <h4>{% trans 'Stock Pricing' %}<i class="fas fa-info-circle" title="Shows the prices of stock for this part
+the part single price shown is the current price for that supplier part"></i></h4>
+    {% if price_history|length > 1 %}
+        <div style="max-width: 99%; min-height: 300px">
+            <canvas id="StockPriceChart"></canvas>
+        </div>
+    {% else %}
+        <div class='alert alert-danger alert-block'>
+            {% trans 'No stock pricing history is available for this part.' %}
+        </div>
+    {% endif %}
+{% endif %}
+{% endblock %}
+
+
+
+
+{% block js_ready %}
+    {{ block.super }}
+
+    {% settings_value "INVENTREE_DEFAULT_CURRENCY" as currency %}
+    {% if price_history %}
+            var pricedata = {
+                    labels: [
+                        {% for line in price_history %}'{{ line.date }}',{% endfor %}
+                    ],
+                    datasets: [{
+                        label: '{% blocktrans %}Single Price - {{currency}}{% endblocktrans %}',
+                        backgroundColor: 'rgba(255, 99, 132, 0.2)',
+                        borderColor: 'rgb(255, 99, 132)',
+                        yAxisID: 'y',
+                        data: [
+                            {% for line in price_history %}{{ line.price|stringformat:".2f" }},{% endfor %}
+                        ],
+                        borderWidth: 1,
+                        type: 'line'
+                    },
+                    {% if 'price_diff' in price_history.0 %}
+                    {
+                        label: '{% blocktrans %}Single Price Difference - {{currency}}{% endblocktrans %}',
+                        backgroundColor: 'rgba(68, 157, 68, 0.2)',
+                        borderColor: 'rgb(68, 157, 68)',
+                        yAxisID: 'y2',
+                        data: [
+                            {% for line in price_history %}{{ line.price_diff|stringformat:".2f" }},{% endfor %}
+                        ],
+                        borderWidth: 1,
+                        type: 'line'
+                    },
+                    {
+                        label: '{% blocktrans %}Part Single Price - {{currency}}{% endblocktrans %}',
+                        backgroundColor: 'rgba(70, 127, 155, 0.2)',
+                        borderColor: 'rgb(70, 127, 155)',
+                        yAxisID: 'y',
+                        data: [
+                            {% for line in price_history %}{{ line.price_part|stringformat:".2f" }},{% endfor %}
+                        ],
+                        borderWidth: 1,
+                        type: 'line'
+                    },
+                    {% endif %}
+                    {
+                        label: '{% trans "Quantity" %}',
+                        backgroundColor: 'rgba(255, 206, 86, 0.2)',
+                        borderColor: 'rgb(255, 206, 86)',
+                        yAxisID: 'y1',
+                        data: [
+                            {% for line in price_history %}{{ line.qty|stringformat:"f" }},{% endfor %}
+                        ],
+                        borderWidth: 1
+                    }]
+                }
+            var StockPriceChart = loadStockPricingChart(document.getElementById('StockPriceChart'), pricedata)
+            var bom_colors =  randomColor({hue: 'green', count: {{ bom_parts|length }} })
+            var bomdata = {
+                labels: [{% for line in bom_parts %}'{{ line.name }}',{% endfor %}],
+                datasets:  [
+                {% if bom_pie_min %}
+                {
+                    label: 'Max Price',
+                    data: [{% for line in bom_parts %}{{ line.max_price }},{% endfor %}],
+                    backgroundColor: bom_colors,
+                  },
+                {% endif %}
+                {
+                  label: 'Price',
+                  data: [{% for line in bom_parts %}{% if bom_pie_min %}{{ line.min_price }}{% else %}{{ line.price }}{% endif%},{% endfor %}],
+                  backgroundColor: bom_colors,
+                }
+              ]
+            };
+            var BomChart = loadBomChart(document.getElementById('BomChart'), bomdata)
+
+    {% endif %}
+
+{% endblock %}

InvenTree/part/templates/part/part_pricing.html

@@ -3,7 +3,6 @@
 {% load i18n %}
 
 {% block pre_form_content %}
-
 <table class='table table-striped table-condensed table-price-two'>
     <tr>
         <td><b>{% trans 'Part' %}</b></td>
@@ -95,4 +94,4 @@
 </div>
 {% endif %}
 <hr>
-{% endblock %}
+{% endblock %}

InvenTree/part/urls.py

@@ -59,6 +59,7 @@ part_detail_urls = [
     url(r'^bom/?', views.PartDetail.as_view(template_name='part/bom.html'), name='part-bom'),
     url(r'^build/?', views.PartDetail.as_view(template_name='part/build.html'), name='part-build'),
     url(r'^used/?', views.PartDetail.as_view(template_name='part/used_in.html'), name='part-used-in'),
+    url(r'^order-prices/', views.PartPricingView.as_view(template_name='part/order_prices.html'), name='part-order-prices'),
     url(r'^manufacturers/?', views.PartDetail.as_view(template_name='part/manufacturer.html'), name='part-manufacturers'),
     url(r'^suppliers/?', views.PartDetail.as_view(template_name='part/supplier.html'), name='part-suppliers'),
     url(r'^orders/?', views.PartDetail.as_view(template_name='part/orders.html'), name='part-orders'),

InvenTree/part/views.py

@@ -19,6 +19,7 @@ from django.forms import HiddenInput, CheckboxInput
 from django.conf import settings
 
 from moneyed import CURRENCIES
+from djmoney.contrib.exchange.models import convert_money
 
 from PIL import Image
 
@@ -782,6 +783,94 @@ class PartDetail(InvenTreeRoleMixin, DetailView):
         return context
 
 
+class PartPricingView(PartDetail):
+    """ Detail view for Part object
+    """
+    context_object_name = 'part'
+    template_name = 'part/order_prices.html'
+    form_class = part_forms.PartPriceForm
+
+    # Add in some extra context information based on query params
+    def get_context_data(self, **kwargs):
+        """ Provide extra context data to template """
+        context = super().get_context_data(**kwargs)
+
+        ctx = self.get_pricing(self.get_quantity())
+        ctx['form'] = self.form_class(initial=self.get_initials())
+
+        context.update(ctx)
+        return context
+
+    def get_quantity(self):
+        """ Return set quantity in decimal format """
+        return Decimal(self.request.POST.get('quantity', 1))
+
+    def get_part(self):
+        return self.get_object()
+
+    def get_pricing(self, quantity=1, currency=None):
+        """ returns context with pricing information """
+        ctx = PartPricing.get_pricing(self, quantity, currency)
+        part = self.get_part()
+        # Stock history
+        if part.total_stock > 1:
+            ret = []
+            stock = part.stock_entries(include_variants=False, in_stock=True)  # .order_by('purchase_order__date')
+            stock = stock.prefetch_related('purchase_order', 'supplier_part')
+
+            for stock_item in stock:
+                if None in [stock_item.purchase_price, stock_item.quantity]:
+                    continue
+
+                # convert purchase price to current currency - only one currency in the graph
+                price = convert_money(stock_item.purchase_price, inventree_settings.currency_code_default())
+                line = {
+                    'price': price.amount,
+                    'qty': stock_item.quantity
+                }
+                # Supplier Part Name  # TODO use in graph
+                if stock_item.supplier_part:
+                    line['name'] = stock_item.supplier_part.pretty_name
+
+                    if stock_item.supplier_part.unit_pricing and price:
+                        line['price_diff'] = price.amount - stock_item.supplier_part.unit_pricing
+                        line['price_part'] = stock_item.supplier_part.unit_pricing
+
+                # set date for graph labels
+                if stock_item.purchase_order:
+                    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)
+
+            ctx['price_history'] = ret
+
+        # BOM Information for Pie-Chart
+        bom_items = [{'name': str(a.sub_part), 'price': a.sub_part.get_price_range(quantity), 'q': a.quantity} for a in part.bom_items.all()]
+        if [True for a in bom_items if len(set(a['price'])) == 2]:
+            ctx['bom_parts'] = [{
+                'name': a['name'],
+                'min_price': str((a['price'][0] * a['q']) / quantity),
+                'max_price': str((a['price'][1] * a['q']) / quantity)} for a in bom_items]
+            ctx['bom_pie_min'] = True
+        else:
+            ctx['bom_parts'] = [{
+                'name': a['name'],
+                'price': str((a['price'][0] * a['q']) / quantity)} for a in bom_items]
+
+        return ctx
+
+    def get_initials(self):
+        """ returns initials for form """
+        return {'quantity': self.get_quantity()}
+
+    def post(self, request, *args, **kwargs):
+        self.object = self.get_object()
+        kwargs['object'] = self.object
+        ctx = self.get_context_data(**kwargs)
+        return self.get(request, context=ctx)
+
+
 class PartDetailFromIPN(PartDetail):
     slug_field = 'IPN'
     slug_url_kwarg = 'slug'

InvenTree/templates/base.html

@@ -138,7 +138,9 @@
 <script type="text/javascript" src="{% static 'fullcalendar/locales-all.js' %}"></script>
 <script type="text/javascript" src="{% static 'script/select2/select2.js' %}"></script>
 <script type='text/javascript' src="{% static 'script/moment.js' %}"></script>
+<script type='text/javascript' src="{% static 'script/chart.min.js' %}"></script>
 <script type='text/javascript' src="{% static 'script/clipboard.min.js' %}"></script>
+<script type='text/javascript' src="{% static 'script/randomColor.min.js' %}"></script>
 
 <!-- general InvenTree -->
 <script type='text/javascript' src="{% static 'script/inventree/inventree.js' %}"></script>

InvenTree/templates/js/part.js

@@ -688,3 +688,60 @@ function loadPartTestTemplateTable(table, options) {
         ]
     });
 }
+
+
+function loadStockPricingChart(context, data) {
+    return new Chart(context, {
+        type: 'bar',
+        data: data,
+        options: {
+            responsive: true,
+            maintainAspectRatio: false,
+            plugins: {legend: {position: 'bottom'}},
+            scales: {
+                y: {
+                    type: 'linear',
+                    position: 'left',
+                    grid: {display: false},
+                    title: {
+                        display: true,
+                        text: '{% trans "Single Price" %}'
+                    }
+                },
+                y1: {
+                    type: 'linear',
+                    position: 'right',
+                    grid: {display: false},
+                    titel: {
+                        display: true,
+                        text: '{% trans "Quantity" %}',
+                        position: 'right'
+                    }
+                },
+                y2: {
+                    type: 'linear',
+                    position: 'left',
+                    grid: {display: false},
+                    title: {
+                        display: true,
+                        text: '{% trans "Single Price Difference" %}'
+                    }
+                }
+            },
+        }
+    });
+}
+
+
+function loadBomChart(context, data) {
+    return new Chart(context, {
+        type: 'doughnut',
+        data: data,
+        options: {
+            responsive: true,
+            maintainAspectRatio: false,
+            plugins: {legend: {position: 'bottom'},
+            scales: {xAxes: [{beginAtZero: true, ticks: {autoSkip: false}}]}}
+        }
+    });
+}