Merge pull request #1545 from matmair/issue1425

adds sales order line item price

InvenTree/InvenTree/static/css/inventree.css

@@ -466,6 +466,24 @@
     background: #eee;
 }
 
+/* pricing table widths */
+.table-price-two tr td:first-child {
+    width: 40%;
+}
+
+.table-price-three tr td:first-child {
+    width: 40%;
+}
+
+.table-price-two tr td:last-child {
+    width: 60%;
+}
+
+.table-price-three tr td:last-child {
+    width: 30%;
+}
+/* !pricing table widths */
+
 .btn-glyph {
     padding-left: 6px;
     padding-right: 6px;

InvenTree/InvenTree/static/script/inventree/inventree.js

@@ -100,7 +100,7 @@ function makeIconButton(icon, cls, pk, title, options={}) {
     if (options.disabled) {
         extraProps += "disabled='true' ";
     }
-    
+
     html += `<button pk='${pk}' id='${id}' class='${classes}' title='${title}' ${extraProps}>`;
     html += `<span class='fas ${icon}'></span>`;
     html += `</button>`;

InvenTree/common/models.py

@@ -7,6 +7,8 @@ These models are 'generic' and do not fit a particular business logic object.
 from __future__ import unicode_literals
 
 import os
+import decimal
+import math
 
 from django.db import models, transaction
 from django.db.utils import IntegrityError, OperationalError
@@ -730,6 +732,72 @@ class PriceBreak(models.Model):
         return converted.amount
 
 
+def get_price(instance, quantity, moq=True, multiples=True, currency=None):
+    """ Calculate the price based on quantity price breaks.
+
+    - Don't forget to add in flat-fee cost (base_cost field)
+    - If MOQ (minimum order quantity) is required, bump quantity
+    - If order multiples are to be observed, then we need to calculate based on that, too
+    """
+
+    price_breaks = instance.price_breaks.all()
+
+    # No price break information available?
+    if len(price_breaks) == 0:
+        return None
+
+    # Check if quantity is fraction and disable multiples
+    multiples = (quantity % 1 == 0)
+
+    # Order multiples
+    if multiples:
+        quantity = int(math.ceil(quantity / instance.multiple) * instance.multiple)
+
+    pb_found = False
+    pb_quantity = -1
+    pb_cost = 0.0
+
+    if currency is None:
+        # Default currency selection
+        currency = InvenTreeSetting.get_setting('INVENTREE_DEFAULT_CURRENCY')
+
+    pb_min = None
+    for pb in instance.price_breaks.all():
+        # Store smallest price break
+        if not pb_min:
+            pb_min = pb
+
+        # Ignore this pricebreak (quantity is too high)
+        if pb.quantity > quantity:
+            continue
+
+        pb_found = True
+
+        # If this price-break quantity is the largest so far, use it!
+        if pb.quantity > pb_quantity:
+            pb_quantity = pb.quantity
+
+            # Convert everything to the selected currency
+            pb_cost = pb.convert_to(currency)
+
+    # Use smallest price break
+    if not pb_found and pb_min:
+        # Update price break information
+        pb_quantity = pb_min.quantity
+        pb_cost = pb_min.convert_to(currency)
+        # Trigger cost calculation using smallest price break
+        pb_found = True
+
+    # Convert quantity to decimal.Decimal format
+    quantity = decimal.Decimal(f'{quantity}')
+
+    if pb_found:
+        cost = pb_cost * quantity
+        return InvenTree.helpers.normalize(cost + instance.base_cost)
+    else:
+        return None
+
+
 class ColorTheme(models.Model):
     """ Color Theme Setting """
 

InvenTree/company/models.py

@@ -6,8 +6,6 @@ Company database model definitions
 from __future__ import unicode_literals
 
 import os
-import decimal
-import math
 
 from django.utils.translation import ugettext_lazy as _
 from django.core.validators import MinValueValidator
@@ -26,7 +24,6 @@ from markdownx.models import MarkdownxField
 from stdimage.models import StdImageField
 
 from InvenTree.helpers import getMediaUrl, getBlankImage, getBlankThumbnail
-from InvenTree.helpers import normalize
 from InvenTree.fields import InvenTreeURLField
 from InvenTree.status_codes import PurchaseOrderStatus
 
@@ -558,70 +555,7 @@ class SupplierPart(models.Model):
             price=price
         )
 
-    def get_price(self, quantity, moq=True, multiples=True, currency=None):
-        """ Calculate the supplier price based on quantity price breaks.
-
-        - Don't forget to add in flat-fee cost (base_cost field)
-        - If MOQ (minimum order quantity) is required, bump quantity
-        - If order multiples are to be observed, then we need to calculate based on that, too
-        """
-
-        price_breaks = self.price_breaks.all()
-
-        # No price break information available?
-        if len(price_breaks) == 0:
-            return None
-
-        # Check if quantity is fraction and disable multiples
-        multiples = (quantity % 1 == 0)
-
-        # Order multiples
-        if multiples:
-            quantity = int(math.ceil(quantity / self.multiple) * self.multiple)
-
-        pb_found = False
-        pb_quantity = -1
-        pb_cost = 0.0
-
-        if currency is None:
-            # Default currency selection
-            currency = common.models.InvenTreeSetting.get_setting('INVENTREE_DEFAULT_CURRENCY')
-
-        pb_min = None
-        for pb in self.price_breaks.all():
-            # Store smallest price break
-            if not pb_min:
-                pb_min = pb
-
-            # Ignore this pricebreak (quantity is too high)
-            if pb.quantity > quantity:
-                continue
-
-            pb_found = True
-
-            # If this price-break quantity is the largest so far, use it!
-            if pb.quantity > pb_quantity:
-                pb_quantity = pb.quantity
-
-                # Convert everything to the selected currency
-                pb_cost = pb.convert_to(currency)
-
-        # Use smallest price break
-        if not pb_found and pb_min:
-            # Update price break information
-            pb_quantity = pb_min.quantity
-            pb_cost = pb_min.convert_to(currency)
-            # Trigger cost calculation using smallest price break
-            pb_found = True
-        
-        # Convert quantity to decimal.Decimal format
-        quantity = decimal.Decimal(f'{quantity}')
-
-        if pb_found:
-            cost = pb_cost * quantity
-            return normalize(cost + self.base_cost)
-        else:
-            return None
+    get_price = common.models.get_price
 
     def open_orders(self):
         """ Return a database query for PO line items for this SupplierPart,

InvenTree/order/forms.py

@@ -211,6 +211,7 @@ class EditSalesOrderLineItemForm(HelperForm):
             'part',
             'quantity',
             'reference',
+            'sale_price',
             'notes'
         ]
 

InvenTree/order/migrations/0045_auto_20210504_1946.py

@@ -0,0 +1,24 @@
+# Generated by Django 3.2 on 2021-05-04 19:46
+
+from django.db import migrations
+import djmoney.models.fields
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('order', '0044_auto_20210404_2016'),
+    ]
+
+    operations = [
+        migrations.AddField(
+            model_name='salesorderlineitem',
+            name='sale_price',
+            field=djmoney.models.fields.MoneyField(blank=True, decimal_places=4, default_currency='USD', help_text='Unit sale price', max_digits=19, null=True, verbose_name='Sale Price'),
+        ),
+        migrations.AddField(
+            model_name='salesorderlineitem',
+            name='sale_price_currency',
+            field=djmoney.models.fields.CurrencyField(choices=[('AUD', 'Australian Dollar'), ('GBP', 'British Pound'), ('CAD', 'Canadian Dollar'), ('EUR', 'Euro'), ('JPY', 'Japanese Yen'), ('NZD', 'New Zealand Dollar'), ('USD', 'US Dollar')], default='USD', editable=False, max_length=3),
+        ),
+    ]

InvenTree/order/models.py

@@ -672,12 +672,22 @@ class SalesOrderLineItem(OrderLineItem):
     Attributes:
         order: Link to the SalesOrder that this line item belongs to
         part: Link to a Part object (may be null)
+        sale_price: The unit sale price for this OrderLineItem
     """
 
     order = models.ForeignKey(SalesOrder, on_delete=models.CASCADE, related_name='lines', verbose_name=_('Order'), help_text=_('Sales Order'))
 
     part = models.ForeignKey('part.Part', on_delete=models.SET_NULL, related_name='sales_order_line_items', null=True, verbose_name=_('Part'), help_text=_('Part'), limit_choices_to={'salable': True})
 
+    sale_price = MoneyField(
+        max_digits=19,
+        decimal_places=4,
+        default_currency='USD',
+        null=True, blank=True,
+        verbose_name=_('Sale Price'),
+        help_text=_('Unit sale price'),
+    )
+
     class Meta:
         unique_together = [
         ]

InvenTree/order/serializers.py

@@ -278,6 +278,7 @@ class SOLineItemSerializer(InvenTreeModelSerializer):
     quantity = serializers.FloatField()
     allocated = serializers.FloatField(source='allocated_quantity', read_only=True)
     fulfilled = serializers.FloatField(source='fulfilled_quantity', read_only=True)
+    sale_price_string = serializers.CharField(source='sale_price', read_only=True)
 
     class Meta:
         model = SalesOrderLineItem
@@ -294,6 +295,9 @@ class SOLineItemSerializer(InvenTreeModelSerializer):
             'order_detail',
             'part',
             'part_detail',
+            'sale_price',
+            'sale_price_currency',
+            'sale_price_string',
         ]
 
 

InvenTree/order/templates/order/sales_order_detail.html

@@ -223,6 +223,14 @@ $("#so-lines-table").inventreeTable({
             field: 'quantity',
             title: '{% trans "Quantity" %}',
         },
+        {
+            sortable: true,
+            field: 'sale_price',
+            title: '{% trans "Unit Price" %}',
+            formatter: function(value, row) {
+                return row.sale_price_string || row.sale_price;
+            }
+        },
         {
             field: 'allocated',
             {% if order.status == SalesOrderStatus.PENDING %}
@@ -279,7 +287,7 @@ $("#so-lines-table").inventreeTable({
                         html += makeIconButton('fa-hashtag icon-green', 'button-add-by-sn', pk, '{% trans "Allocate serial numbers" %}');
                     }
 
-                    html += makeIconButton('fa-sign-in-alt icon-green', 'button-add', pk, '{% trans "Allocate stock" %}');   
+                    html += makeIconButton('fa-sign-in-alt icon-green', 'button-add', pk, '{% trans "Allocate stock" %}');
 
                     if (part.purchaseable) {
                         html += makeIconButton('fa-shopping-cart', 'button-buy', row.part, '{% trans "Purchase stock" %}');
@@ -288,7 +296,8 @@ $("#so-lines-table").inventreeTable({
                     if (part.assembly) {
                         html += makeIconButton('fa-tools', 'button-build', row.part, '{% trans "Build stock" %}');
                     }
-                    
+
+                    html += makeIconButton('fa-dollar-sign icon-green', 'button-price', pk, '{% trans "Calculate price" %}');
                 }
                 
                 html += makeIconButton('fa-edit icon-blue', 'button-edit', pk, '{% trans "Edit line item" %}');
@@ -388,6 +397,26 @@ function setupCallbacks() {
             },
         });
     });
+
+    $(".button-price").click(function() {
+        var pk = $(this).attr('pk');
+        var idx = $(this).closest('tr').attr('data-index');
+        var row = table.bootstrapTable('getData')[idx];
+
+        launchModalForm(
+            "{% url 'line-pricing' %}",
+            {
+                submit_text: '{% trans "Calculate price" %}',
+                data: {
+                    line_item: pk,
+                    quantity: row.quantity,
+                },
+                buttons: [{name: 'update_price',
+                    title: '{% trans "Update Unit Price" %}'},],
+                success: reloadTable,
+            }
+        );
+    });
 }
 
 {% endblock %}

InvenTree/order/urls.py

@@ -31,6 +31,7 @@ purchase_order_urls = [
     url(r'^new/', views.PurchaseOrderCreate.as_view(), name='po-create'),
 
     url(r'^order-parts/', views.OrderParts.as_view(), name='order-parts'),
+    url(r'^pricing/', views.LineItemPricing.as_view(), name='line-pricing'),
 
     # Display detail view for a single purchase order
     url(r'^(?P<pk>\d+)/', include(purchase_order_detail_urls)),

InvenTree/order/views.py

@@ -6,13 +6,14 @@ Django views for interacting with Order app
 from __future__ import unicode_literals
 
 from django.db import transaction
+from django.http.response import JsonResponse
 from django.shortcuts import get_object_or_404
 from django.core.exceptions import ValidationError
 from django.urls import reverse
 from django.utils.translation import ugettext_lazy as _
 from django.views.generic import DetailView, ListView, UpdateView
 from django.views.generic.edit import FormMixin
-from django.forms import HiddenInput
+from django.forms import HiddenInput, IntegerField
 
 import logging
 from decimal import Decimal, InvalidOperation
@@ -29,6 +30,7 @@ from part.models import Part
 from common.models import InvenTreeSetting
 
 from . import forms as order_forms
+from part.views import PartPricing
 
 from InvenTree.views import AjaxView, AjaxCreateView, AjaxUpdateView, AjaxDeleteView
 from InvenTree.helpers import DownloadFile, str2bool
@@ -1245,6 +1247,18 @@ class SOLineItemCreate(AjaxCreateView):
 
         return initials
 
+    def save(self, form):
+        ret = form.save()
+        # check if price s set in form - else autoset
+        if not ret.sale_price:
+            price = ret.part.get_price(ret.quantity)
+            # only if price is avail
+            if price:
+                ret.sale_price = price / ret.quantity
+                ret.save()
+        self.object = ret
+        return ret
+
 
 class SOLineItemEdit(AjaxUpdateView):
     """ View for editing a SalesOrderLineItem """
@@ -1571,3 +1585,101 @@ class SalesOrderAllocationDelete(AjaxDeleteView):
     ajax_form_title = _("Remove allocation")
     context_object_name = 'allocation'
     ajax_template_name = "order/so_allocation_delete.html"
+
+
+class LineItemPricing(PartPricing):
+    """ View for inspecting part pricing information """
+
+    class EnhancedForm(PartPricing.form_class):
+        pk = IntegerField(widget=HiddenInput())
+        so_line = IntegerField(widget=HiddenInput())
+
+    form_class = EnhancedForm
+
+    def get_part(self, id=False):
+        if 'line_item' in self.request.GET:
+            try:
+                part_id = self.request.GET.get('line_item')
+                part = SalesOrderLineItem.objects.get(id=part_id).part
+            except Part.DoesNotExist:
+                return None
+        elif 'pk' in self.request.POST:
+            try:
+                part_id = self.request.POST.get('pk')
+                part = Part.objects.get(id=part_id)
+            except Part.DoesNotExist:
+                return None
+        else:
+            return None
+
+        if id:
+            return part.id
+        return part
+
+    def get_so(self, pk=False):
+        so_line = self.request.GET.get('line_item', None)
+        if not so_line:
+            so_line = self.request.POST.get('so_line', None)
+
+        if so_line:
+            try:
+                sales_order = SalesOrderLineItem.objects.get(pk=so_line)
+                if pk:
+                    return sales_order.pk
+                return sales_order
+            except Part.DoesNotExist:
+                return None
+        return None
+
+    def get_quantity(self):
+        """ Return set quantity in decimal format """
+        qty = Decimal(self.request.GET.get('quantity', 1))
+        if qty == 1:
+            return Decimal(self.request.POST.get('quantity', 1))
+        return qty
+
+    def get_initials(self):
+        initials = super().get_initials()
+        initials['pk'] = self.get_part(id=True)
+        initials['so_line'] = self.get_so(pk=True)
+        return initials
+
+    def post(self, request, *args, **kwargs):
+        # parse extra actions
+        REF = 'act-btn_'
+        act_btn = [a.replace(REF, '') for a in self.request.POST if REF in a]
+
+        # check if extra action was passed
+        if act_btn and act_btn[0] == 'update_price':
+            # get sales order
+            so_line = self.get_so()
+            if not so_line:
+                self.data = {'non_field_errors': [_('Sales order not found')]}
+            else:
+                quantity = self.get_quantity()
+                price = self.get_pricing(quantity).get('unit_part_price', None)
+
+                if not price:
+                    self.data = {'non_field_errors': [_('Price not found')]}
+                else:
+                    # set normal update note
+                    note = _('Updated {part} unit-price to {price}')
+
+                    # check qunatity and update if different
+                    if so_line.quantity != quantity:
+                        so_line.quantity = quantity
+                        note = _('Updated {part} unit-price to {price} and quantity to {qty}')
+
+                    # update sale_price
+                    so_line.sale_price = price
+                    so_line.save()
+
+                    # parse response
+                    data = {
+                        'form_valid': True,
+                        'success': note.format(part=str(so_line.part), price=str(so_line.sale_price), qty=quantity)
+                    }
+                    return JsonResponse(data=data)
+
+        # let the normal pricing view run
+        return super().post(request, *args, **kwargs)

InvenTree/part/migrations/0065_auto_20210505_2144.py

@@ -0,0 +1,24 @@
+# Generated by Django 3.2 on 2021-05-05 21:44
+
+import django.core.validators
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('part', '0064_auto_20210404_2016'),
+    ]
+
+    operations = [
+        migrations.AddField(
+            model_name='part',
+            name='base_cost',
+            field=models.DecimalField(decimal_places=3, default=0, help_text='Minimum charge (e.g. stocking fee)', max_digits=10, validators=[django.core.validators.MinValueValidator(0)], verbose_name='base cost'),
+        ),
+        migrations.AddField(
+            model_name='part',
+            name='multiple',
+            field=models.PositiveIntegerField(default=1, help_text='Sell multiple', validators=[django.core.validators.MinValueValidator(1)], verbose_name='multiple'),
+        ),
+    ]

InvenTree/part/models.py

@@ -1611,6 +1611,44 @@ class Part(MPTTModel):
                 max(buy_price_range[1], bom_price_range[1])
             )
 
+    base_cost = models.DecimalField(max_digits=10, decimal_places=3, default=0, validators=[MinValueValidator(0)], verbose_name=_('base cost'), help_text=_('Minimum charge (e.g. stocking fee)'))
+
+    multiple = models.PositiveIntegerField(default=1, validators=[MinValueValidator(1)], verbose_name=_('multiple'), help_text=_('Sell multiple'))
+
+    get_price = common.models.get_price
+
+    @property
+    def has_price_breaks(self):
+        return self.price_breaks.count() > 0
+
+    @property
+    def price_breaks(self):
+        """ Return the associated price breaks in the correct order """
+        return self.salepricebreaks.order_by('quantity').all()
+
+    @property
+    def unit_pricing(self):
+        return self.get_price(1)
+
+    def add_price_break(self, quantity, price):
+        """
+        Create a new price break for this part
+
+        args:
+            quantity - Numerical quantity
+            price - Must be a Money object
+        """
+
+        # Check if a price break at that quantity already exists...
+        if self.price_breaks.filter(quantity=quantity, part=self.pk).exists():
+            return
+
+        PartSellPriceBreak.objects.create(
+            part=self,
+            quantity=quantity,
+            price=price
+        )
+
     @transaction.atomic
     def copy_bom_from(self, other, clear=True, **kwargs):
         """

InvenTree/part/templates/part/part_pricing.html

@@ -4,24 +4,20 @@
 
 {% block pre_form_content %}
 
-<div class='alert alert-info alert-block'>
-{% blocktrans %}Pricing information for:<br>{{part}}.{% endblocktrans %}
-</div>
-
-<h4>{% trans 'Quantity' %}</h4>
-<table class='table table-striped table-condensed'>
+<table class='table table-striped table-condensed table-price-two'>
     <tr>
         <td><b>{% trans 'Part' %}</b></td>
-        <td colspan='2'>{{ part  }}</td>
+        <td>{{ part  }}</td>
     </tr>
     <tr>
         <td><b>{% trans 'Quantity' %}</b></td>
-        <td colspan='2'>{{ quantity }}</td>
+        <td>{{ quantity }}</td>
     </tr>
 </table>
-    {% if part.supplier_count > 0 %}
+
+{% if part.supplier_count > 0 %}
     <h4>{% trans 'Supplier Pricing' %}</h4>
-<table class='table table-striped table-condensed'>
+    <table class='table table-striped table-condensed table-price-three'>
     {% if min_total_buy_price %}
     <tr>
         <td><b>{% trans 'Unit Cost' %}</b></td>
@@ -42,12 +38,12 @@
         </td>
     </tr>
     {% endif %}
-</table>
-    {% endif %}
+    </table>
+{% endif %}
 
-    {% if part.bom_count > 0 %}
+{% if part.bom_count > 0 %}
     <h4>{% trans 'BOM Pricing' %}</h4>
-<table class='table table-striped table-condensed'>
+    <table class='table table-striped table-condensed table-price-three'>
     {% if min_total_bom_price %}
     <tr>
         <td><b>{% trans 'Unit Cost' %}</b></td>
@@ -75,8 +71,22 @@
         </td>
     </tr>
     {% endif %}
-</table>
-    {% endif %}
+    </table>
+{% endif %}
+
+{% if total_part_price %}
+    <h4>{% trans 'Sale Price' %}</h4>
+    <table class='table table-striped table-condensed table-price-two'>
+        <tr>
+            <td><b>{% trans 'Unit Cost' %}</b></td>
+            <td>{% include "price.html" with price=unit_part_price %}</td>
+        </tr>
+        <tr>
+            <td><b>{% trans 'Total Cost' %}</b></td>
+            <td>{% include "price.html" with price=total_part_price %}</td>
+        </tr>
+    </table>
+{% endif %}
 
 {% if min_unit_buy_price or min_unit_bom_price %}
 {% else %}
@@ -84,7 +94,5 @@
     {% trans 'No pricing information is available for this part.' %}
 </div>
 {% endif %}
-
 <hr>
-
 {% endblock %}

InvenTree/part/urls.py

@@ -30,11 +30,10 @@ sale_price_break_urls = [
 ]
 
 part_parameter_urls = [
-    
     url(r'^template/new/', views.PartParameterTemplateCreate.as_view(), name='part-param-template-create'),
     url(r'^template/(?P<pk>\d+)/edit/', views.PartParameterTemplateEdit.as_view(), name='part-param-template-edit'),
     url(r'^template/(?P<pk>\d+)/delete/', views.PartParameterTemplateDelete.as_view(), name='part-param-template-edit'),
-    
+
     url(r'^new/', views.PartParameterCreate.as_view(), name='part-param-create'),
     url(r'^(?P<pk>\d+)/edit/', views.PartParameterEdit.as_view(), name='part-param-edit'),
     url(r'^(?P<pk>\d+)/delete/', views.PartParameterDelete.as_view(), name='part-param-delete'),
@@ -49,10 +48,10 @@ part_detail_urls = [
     url(r'^duplicate/', views.PartDuplicate.as_view(), name='part-duplicate'),
     url(r'^make-variant/', views.MakePartVariant.as_view(), name='make-part-variant'),
     url(r'^pricing/', views.PartPricing.as_view(), name='part-pricing'),
-    
+
     url(r'^bom-upload/?', views.BomUpload.as_view(), name='upload-bom'),
     url(r'^bom-duplicate/?', views.BomDuplicate.as_view(), name='duplicate-bom'),
-    
+
     url(r'^params/', views.PartDetail.as_view(template_name='part/params.html'), name='part-params'),
     url(r'^variants/?', views.PartDetail.as_view(template_name='part/variants.html'), name='part-variants'),
     url(r'^stock/?', views.PartDetail.as_view(template_name='part/stock.html'), name='part-stock'),
@@ -70,7 +69,7 @@ part_detail_urls = [
     url(r'^related-parts/?', views.PartDetail.as_view(template_name='part/related.html'), name='part-related'),
     url(r'^attachments/?', views.PartDetail.as_view(template_name='part/attachments.html'), name='part-attachments'),
     url(r'^notes/?', views.PartNotes.as_view(), name='part-notes'),
-    
+
     url(r'^qr_code/?', views.PartQRCode.as_view(), name='part-qr'),
 
     # Normal thumbnail with form
@@ -104,7 +103,7 @@ category_urls = [
 
         url(r'^subcategory/', views.CategoryDetail.as_view(template_name='part/subcategory.html'), name='category-subcategory'),
         url(r'^parametric/', views.CategoryParametric.as_view(), name='category-parametric'),
-    
+
         # Anything else
         url(r'^.*$', views.CategoryDetail.as_view(), name='category-detail'),
     ]))

InvenTree/part/views.py

@@ -1956,10 +1956,9 @@ class PartPricing(AjaxView):
     form_class = part_forms.PartPriceForm
 
     role_required = ['sales_order.view', 'part.view']
-    
+
     def get_quantity(self):
         """ Return set quantity in decimal format """
-        
         return Decimal(self.request.POST.get('quantity', 1))
 
     def get_part(self):
@@ -1969,12 +1968,7 @@ class PartPricing(AjaxView):
             return None
 
     def get_pricing(self, quantity=1, currency=None):
-
-        # try:
-        #     quantity = int(quantity)
-        # except ValueError:
-        #     quantity = 1
-
+        """ returns context with pricing information """
         if quantity <= 0:
             quantity = 1
 
@@ -2044,11 +2038,22 @@ class PartPricing(AjaxView):
                     ctx['max_total_bom_price'] = max_bom_price
                     ctx['max_unit_bom_price'] = max_unit_bom_price
 
+        # part pricing information
+        part_price = part.get_price(quantity)
+        if part_price is not None:
+            ctx['total_part_price'] = round(part_price, 3)
+            ctx['unit_part_price'] = round(part_price / quantity, 3)
+
         return ctx
 
-    def get(self, request, *args, **kwargs):
+    def get_initials(self):
+        """ returns initials for form """
+        return {'quantity': self.get_quantity()}
 
-        return self.renderJsonResponse(request, self.form_class(), context=self.get_pricing())
+    def get(self, request, *args, **kwargs):
+        init = self.get_initials()
+        qty = self.get_quantity()
+        return self.renderJsonResponse(request, self.form_class(initial=init), context=self.get_pricing(qty))
 
     def post(self, request, *args, **kwargs):
 
@@ -2057,16 +2062,19 @@ class PartPricing(AjaxView):
         quantity = self.get_quantity()
 
         # Retain quantity value set by user
-        form = self.form_class()
-        form.fields['quantity'].initial = quantity
+        form = self.form_class(initial=self.get_initials())
 
         # TODO - How to handle pricing in different currencies?
         currency = None
 
+        # check if data is set
+        try:
+            data = self.data
+        except AttributeError:
+            data = {}
+
         # Always mark the form as 'invalid' (the user may wish to keep getting pricing data)
-        data = {
-            'form_valid': False,
-        }
+        data['form_valid'] = False
 
         return self.renderJsonResponse(request, form, data=data, context=self.get_pricing(quantity, currency))
 

InvenTree/templates/js/modals.js

@@ -377,6 +377,15 @@ function modalSubmit(modal, callback) {
     $(modal).on('click', '#modal-form-submit', function() {
         callback();
     });
+
+    $(modal).on('click', '.modal-form-button', function() {
+        // Append data to form
+        var name = $(this).attr('name');
+        var value = $(this).attr('value');
+        var input = '<input id="id_act-btn_' + name + '" type="hidden" name="act-btn_' + name + '" value="' + value + '">';
+        $('.js-modal-form').append(input);
+        callback();
+    });
 }
 
 
@@ -659,6 +668,25 @@ function attachSecondaries(modal, secondaries) {
     }
 }
 
+function insertActionButton(modal, options) {
+    /* Insert a custom submition button */
+
+    var html = "<span style='float: right;'>";
+    html += "<button name='" + options.name + "' type='submit' class='btn btn-default modal-form-button'";
+    html += " value='" + options.name + "'>" + options.title + "</button>";
+    html += "</span>";
+
+    $(modal).find('#modal-footer-buttons').append(html);
+}
+
+function attachButtons(modal, buttons) {
+    /* Attach a provided list of buttons */
+
+    for (var i = 0; i < buttons.length; i++) {
+        insertActionButton(modal, buttons[i]);
+    }
+}
+
 
 function attachFieldCallback(modal, callback) {
     /* Attach a 'callback' function to a given field in the modal form.
@@ -808,6 +836,9 @@ function launchModalForm(url, options = {}) {
     var submit_text = options.submit_text || '{% trans "Submit" %}';
     var close_text = options.close_text || '{% trans "Close" %}';
 
+    // Clean custom action buttons
+    $(modal).find('#modal-footer-buttons').html('');
+
     // Form the ajax request to retrieve the django form data
     ajax_data = {
         url: url,
@@ -852,6 +883,10 @@ function launchModalForm(url, options = {}) {
                     handleModalForm(url, options);
                 }
 
+                if (options.buttons) {
+                    attachButtons(modal, options.buttons);
+                }
+
             } else {
                 $(modal).modal('hide');
                 showAlertDialog('{% trans "Invalid server response" %}', '{% trans "JSON response missing form data" %}');

InvenTree/templates/modals.html

@@ -25,6 +25,7 @@
               </div>
             </div>
             <div class='modal-footer'>
+                <div id='modal-footer-buttons'></div>
                 <button type='button' class='btn btn-default' id='modal-form-close' data-dismiss='modal'>{% trans "Close" %}</button>
                 <button type='button' class='btn btn-primary' id='modal-form-submit'>{% trans "Submit" %}</button>
             </div>
@@ -49,6 +50,7 @@
                   </div>
                 </div>
                 <div class='modal-footer'>
+                    <div id='modal-footer-buttons'></div>
                     <button type='button' class='btn btn-default' id='modal-form-close' data-dismiss='modal'>{% trans "Close" %}</button>
                     <button type='button' class='btn btn-primary' id='modal-form-submit'>{% trans "Submit" %}</button>
                 </div>
@@ -69,6 +71,7 @@
                 <div class='modal-form-content'>
                 </div>
                 <div class='modal-footer'>
+                    <div id='modal-footer-buttons'></div>
                     <button type='button' class='btn btn-default' id='modal-form-cancel' data-dismiss='modal'>{% trans "Cancel" %}</button>
                     <button type='button' class='btn btn-primary' id='modal-form-accept'>{% trans "Accept" %}</button>
                 </div>
@@ -90,6 +93,7 @@
               </div>
             </div>
             <div class='modal-footer'>
+                <div id='modal-footer-buttons'></div>
                 <button type='button' class='btn btn-default' data-dismiss='modal'>{% trans "Close" %}</button>
             </div>
         </div>