Added 'track' app

- Keeping track of UniquePart objects

InvenTree/InvenTree/settings.py

@@ -40,7 +40,8 @@ INSTALLED_APPS = [
     
     'part.apps.PartConfig',
     'stock.apps.StockConfig',
-    'supplier.apps.SupplierConfig'
+    'supplier.apps.SupplierConfig',
+    'track.apps.TrackConfig'
 ]
 
 MIDDLEWARE = [

InvenTree/InvenTree/urls.py

@@ -13,6 +13,7 @@ Including another URLconf
     1. Import the include() function: from django.conf.urls import url, include
     2. Add a URL to urlpatterns:  url(r'^blog/', include('blog.urls'))
 """
+
 from django.conf.urls import url, include
 from django.contrib import admin
 
@@ -22,5 +23,6 @@ urlpatterns = [
     url(r'^stock/', include('stock.urls')),
     url(r'^part/', include('part.urls')),
     url(r'^supplier/', include('supplier.urls')),
+    url(r'^track/', include('track.urls')),
     url(r'^admin/', admin.site.urls),
 ]

InvenTree/track/admin.py

@@ -0,0 +1,5 @@
+from django.contrib import admin
+
+from .models import UniquePart
+
+admin.site.register(UniquePart)

InvenTree/track/apps.py

@@ -0,0 +1,7 @@
+from __future__ import unicode_literals
+
+from django.apps import AppConfig
+
+
+class TrackConfig(AppConfig):
+    name = 'track'

InvenTree/track/models.py

@@ -0,0 +1,32 @@
+from __future__ import unicode_literals
+
+from django.db import models
+from django.contrib.auth.models import User
+
+from part.models import Part
+
+class UniquePart(models.Model):
+    """ A unique instance of a Part object.
+    Used for tracking parts based on serial numbers,
+    and tracking all events in the life of a part
+    """
+    
+    part = models.ForeignKey(Part, on_delete=models.CASCADE)
+    created = models.DateField(auto_now_add=True,
+                               editable=False)
+    serial = models.IntegerField()
+    
+    createdBy = models.ForeignKey(User)
+    
+class PartTrackingInfo(models.Model):
+    """ Single data-point in the life of a UniquePart
+    Each time something happens to the UniquePart,
+    a new PartTrackingInfo object should be created.
+    """
+    
+    part = models.ForeignKey(UniquePart, on_delete=models.CASCADE)
+    date = models.DateField(auto_now_add=True,
+                            editable=False)
+    notes = models.CharField(max_length=500)
+    
+    

InvenTree/track/tests.py

@@ -0,0 +1,3 @@
+from django.test import TestCase
+
+# Create your tests here.

InvenTree/track/views.py

@@ -0,0 +1,3 @@
+from django.shortcuts import render
+
+# Create your views here.