Add form / view for installing a stock item into another stock item

InvenTree/stock/forms.py

@@ -8,6 +8,7 @@ from __future__ import unicode_literals
 from django import forms
 from django.forms.utils import ErrorDict
 from django.utils.translation import ugettext as _
+from django.core.validators import MinValueValidator
 
 from mptt.fields import TreeNodeChoiceField
 
@@ -271,6 +272,33 @@ class ExportOptionsForm(HelperForm):
         self.fields['file_format'].choices = self.get_format_choices()
 
 
+class InstallStockForm(HelperForm):
+    """
+    Form for manually installing a stock item into another stock item
+    """
+
+    stock_item = forms.ModelChoiceField(
+        required=True,
+        queryset=StockItem.objects.filter(StockItem.IN_STOCK_FILTER),
+        help_text=_('Stock item to install')
+    )
+
+    quantity = RoundingDecimalFormField(
+        max_digits=10, decimal_places=5,
+        help_text=_('Stock quantity to assign'),
+        validators=[
+            MinValueValidator(0.001)
+        ]
+    )
+
+    class Meta:
+        model = StockItem
+        fields = [
+            'stock_item',
+            'quantity',
+        ]
+
+
 class UninstallStockForm(forms.ModelForm):
     """
     Form for uninstalling a stock item which is installed in another item.

InvenTree/stock/urls.py

@@ -25,6 +25,7 @@ stock_item_detail_urls = [
     url(r'^delete_test_data/', views.StockItemDeleteTestData.as_view(), name='stock-item-delete-test-data'),
     url(r'^assign/', views.StockItemAssignToCustomer.as_view(), name='stock-item-assign'),
     url(r'^return/', views.StockItemReturnToStock.as_view(), name='stock-item-return'),
+    url(r'^install/', views.StockItemInstall.as_view(), name='stock-item-install'),
 
     url(r'^add_tracking/', views.StockItemTrackingCreate.as_view(), name='stock-tracking-create'),
 

InvenTree/stock/views.py

@@ -683,6 +683,46 @@ class StockItemQRCode(QRCodeView):
             return None
 
 
+class StockItemInstall(AjaxUpdateView):
+    """
+    View for manually installing stock items into
+    a particular stock item.
+
+    In contrast to the StockItemUninstall view,
+    only a single stock item can be installed at once.
+    
+    The "part" to be installed must be provided in the GET query parameters.
+    
+    """
+
+    model = StockItem
+    form_class = StockForms.InstallStockForm
+    ajax_form_title = _('Install Stock Item')
+
+    def get_form(self):
+
+        form = super().get_form()
+
+        return form
+
+    def post(self, request, *args, **kwargs):
+
+
+        form = self.get_form()
+        valid = False
+
+        valid = form.is_valid() and valid
+
+        if valid:
+            pass
+
+        data = {
+            'form_valid': valid,
+        }
+
+        return self.renderJsonResponse(request, form, data=data)
+
+
 class StockItemUninstall(AjaxView, FormMixin):
     """
     View for uninstalling one or more StockItems,