Added skeleton for 'build' app

.gitignore

@@ -6,7 +6,7 @@ __pycache__/
 # Distribution / packaging
 .Python
 env/
-build/
+./build/
 develop-eggs/
 dist/
 downloads/

InvenTree/InvenTree/helpers.py

@@ -0,0 +1,18 @@
+import inspect
+from enum import Enum
+
+
+class ChoiceEnum(Enum):
+    """ Helper class to provide enumerated choice values for integer fields
+    """
+    # http://blog.richard.do/index.php/2014/02/how-to-use-enums-for-django-field-choices/
+
+    @classmethod
+    def choices(cls):
+        # get all members of the class
+        members = inspect.getmembers(cls, lambda m: not(inspect.isroutine(m)))
+        # filter down to just properties
+        props = [m for m in members if not(m[0][:2] == '__')]
+        # format into django choice tuple
+        choices = tuple([(str(p[1].value), p[0]) for p in props])
+        return choices

InvenTree/InvenTree/settings.py

@@ -50,6 +50,7 @@ INSTALLED_APPS = [
     'part.apps.PartConfig',
     'stock.apps.StockConfig',
     'supplier.apps.SupplierConfig',
+    'build.apps.BuildConfig',
 ]
 
 MIDDLEWARE = [

InvenTree/InvenTree/urls.py

@@ -11,6 +11,8 @@ from stock.urls import stock_urls
 # from supplier.urls import supplier_api_urls, supplier_api_part_urls
 from supplier.urls import supplier_urls
 
+from build.urls import build_urls
+
 from django.conf import settings
 from django.conf.urls.static import static
 
@@ -68,6 +70,7 @@ urlpatterns = [
     url(r'^part/', include(part_urls)),
     url(r'^stock/', include(stock_urls)),
     url(r'^supplier/', include(supplier_urls)),
+    url(r'^build/', include(build_urls)),
 
     url(r'^admin/', admin.site.urls),
     url(r'^auth/', include('rest_framework.urls', namespace='rest_framework')),

InvenTree/build/admin.py

@@ -0,0 +1,14 @@
+# -*- coding: utf-8 -*-
+from __future__ import unicode_literals
+
+from django.contrib import admin
+
+from .models import Build
+
+
+class BuildAdmin(admin.ModelAdmin):
+
+    list_display = ('status', )
+
+
+admin.site.register(Build, BuildAdmin)

InvenTree/build/apps.py

@@ -1,7 +1,8 @@
+# -*- coding: utf-8 -*-
 from __future__ import unicode_literals
 
 from django.apps import AppConfig
 
 
-class ProjectConfig(AppConfig):
+class BuildConfig(AppConfig):
-    name = 'project'
+    name = 'build'

InvenTree/build/migrations/0001_initial.py

@@ -0,0 +1,40 @@
+# -*- coding: utf-8 -*-
+# Generated by Django 1.11 on 2018-04-16 14:03
+from __future__ import unicode_literals
+
+import django.core.validators
+from django.db import migrations, models
+import django.db.models.deletion
+
+
+class Migration(migrations.Migration):
+
+    initial = True
+
+    dependencies = [
+        ('part', '0019_auto_20180416_1249'),
+    ]
+
+    operations = [
+        migrations.CreateModel(
+            name='Build',
+            fields=[
+                ('id', models.AutoField(auto_created=True, primary_key=True, serialize=False, verbose_name='ID')),
+                ('status', models.PositiveIntegerField(choices=[(b'20', b'Allocated'), (b'30', b'Cancelled'), (b'40', b'Complete'), (b'10', b'Pending')], default=10)),
+            ],
+        ),
+        migrations.CreateModel(
+            name='BuildOutput',
+            fields=[
+                ('id', models.AutoField(auto_created=True, primary_key=True, serialize=False, verbose_name='ID')),
+                ('part_name', models.CharField(max_length=255)),
+                ('quantity', models.PositiveIntegerField(default=1, help_text='Number of parts to build', validators=[django.core.validators.MinValueValidator(1)])),
+                ('build', models.ForeignKey(on_delete=django.db.models.deletion.CASCADE, related_name='outputs', to='build.Build')),
+                ('part', models.ForeignKey(on_delete=django.db.models.deletion.CASCADE, related_name='builds', to='part.Part')),
+            ],
+        ),
+        migrations.AlterUniqueTogether(
+            name='buildoutput',
+            unique_together=set([('part', 'build')]),
+        ),
+    ]

InvenTree/build/migrations/0002_auto_20180416_1423.py

@@ -0,0 +1,36 @@
+# -*- coding: utf-8 -*-
+# Generated by Django 1.11 on 2018-04-16 14:23
+from __future__ import unicode_literals
+
+import django.core.validators
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('build', '0001_initial'),
+    ]
+
+    operations = [
+        migrations.AlterUniqueTogether(
+            name='buildoutput',
+            unique_together=set([]),
+        ),
+        migrations.RemoveField(
+            model_name='buildoutput',
+            name='build',
+        ),
+        migrations.RemoveField(
+            model_name='buildoutput',
+            name='part',
+        ),
+        migrations.AddField(
+            model_name='build',
+            name='quantity',
+            field=models.PositiveIntegerField(default=1, help_text='Number of parts to build', validators=[django.core.validators.MinValueValidator(1)]),
+        ),
+        migrations.DeleteModel(
+            name='BuildOutput',
+        ),
+    ]

InvenTree/build/migrations/0003_build_part.py

@@ -0,0 +1,23 @@
+# -*- coding: utf-8 -*-
+# Generated by Django 1.11 on 2018-04-16 14:28
+from __future__ import unicode_literals
+
+from django.db import migrations, models
+import django.db.models.deletion
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('part', '0019_auto_20180416_1249'),
+        ('build', '0002_auto_20180416_1423'),
+    ]
+
+    operations = [
+        migrations.AddField(
+            model_name='build',
+            name='part',
+            field=models.ForeignKey(default=1, on_delete=django.db.models.deletion.CASCADE, related_name='builds', to='part.Part'),
+            preserve_default=False,
+        ),
+    ]

InvenTree/build/models.py

@@ -0,0 +1,39 @@
+# -*- coding: utf-8 -*-
+from __future__ import unicode_literals
+
+from django.db import models
+from django.core.validators import MinValueValidator
+
+from InvenTree.helpers import ChoiceEnum
+
+from part.models import Part
+
+class Build(models.Model):
+    """ A Build object organises the creation of new parts from the component parts
+    It uses the part BOM to generate new parts.
+    Parts are then taken from stock
+    """
+
+    class BUILD_STATUS(ChoiceEnum):
+        # The build is 'pending' - no action taken yet
+        Pending = 10
+
+        # The parts required for this build have been allocated
+        Allocated = 20
+
+        # The build has been cancelled (parts unallocated)
+        Cancelled = 30
+
+        # The build is complete!
+        Complete = 40
+
+    # Status of the build
+    status = models.PositiveIntegerField(default=BUILD_STATUS.Pending.value,
+                                         choices=BUILD_STATUS.choices())
+
+    part = models.ForeignKey(Part, on_delete=models.CASCADE,
+                             related_name='builds')
+
+    quantity = models.PositiveIntegerField(default=1,
+                                           validators=[MinValueValidator(1)],
+                                           help_text='Number of parts to build')

InvenTree/build/templates/build/detail.html

@@ -0,0 +1,3 @@
+{% include "base.html" %}
+
+Build detail for Build No. {{ build.id }}.

InvenTree/build/templates/build/index.html

@@ -0,0 +1,7 @@
+{% extends "base.html" %}
+
+{% block content %}
+
+<h3>Builds</h3>
+
+{% endblock %}

InvenTree/build/tests.py

@@ -0,0 +1,6 @@
+# -*- coding: utf-8 -*-
+from __future__ import unicode_literals
+
+# from django.test import TestCase
+
+# Create your tests here.

InvenTree/build/urls.py

@@ -0,0 +1,17 @@
+from django.conf.urls import url, include
+from django.views.generic.base import RedirectView
+
+from . import views
+
+build_detail_urls = [
+
+    url(r'^.*$', views.BuildDetail.as_view(), name='build-detail'),
+]
+
+build_urls = [
+    # url(r'new/?', views.BuildCreate.as_view(), name='build-create'),
+
+    url(r'^(?P<pk>\d+)/', include(build_detail_urls)),
+
+    url(r'.*$', views.BuildIndex.as_view(), name='build-index'),
+]

InvenTree/build/views.py

@@ -0,0 +1,22 @@
+# -*- coding: utf-8 -*-
+from __future__ import unicode_literals
+
+from django.shortcuts import get_object_or_404
+from django.http import HttpResponseRedirect
+
+from django.views.generic import DetailView, ListView
+from django.views.generic.edit import UpdateView, DeleteView, CreateView
+
+from .models import Build
+
+
+class BuildIndex(ListView):
+    model = Build
+    template_name = 'build/index.html'
+    context_object_name = 'builds'
+
+
+class BuildDetail(DetailView):
+    model = Build
+    template_name = 'build/detail.html'
+    context_object_name = 'build'

InvenTree/part/urls.py

@@ -85,9 +85,7 @@ part_urls = [
     url(r'^bom/(?P<pk>\d+)/', include(part_bom_urls)),
 
     # Top level part list (display top level parts and categories)
-    url('', views.PartIndex.as_view(), name='part-index'),
+    url(r'^.*$', views.PartIndex.as_view(), name='part-index'),
-
-    url(r'^.*$', RedirectView.as_view(url='', permanent=False), name='part-index'),
 ]
 
 """

InvenTree/part/views.py

@@ -1,3 +1,5 @@
+# -*- coding: utf-8 -*-
+from __future__ import unicode_literals
 
 from django.shortcuts import get_object_or_404
 from django.http import HttpResponseRedirect

InvenTree/project/admin.py

@@ -1,25 +0,0 @@
-from django.contrib import admin
-
-from .models import ProjectCategory, Project, ProjectPart, ProjectRun
-
-
-class ProjectCategoryAdmin(admin.ModelAdmin):
-    list_display = ('name', 'pathstring', 'description')
-
-
-class ProjectAdmin(admin.ModelAdmin):
-    list_display = ('name', 'description', 'category')
-
-
-class ProjectPartAdmin(admin.ModelAdmin):
-    list_display = ('part', 'project', 'quantity', 'output')
-
-
-class ProjectRunAdmin(admin.ModelAdmin):
-    list_display = ('project', 'quantity', 'run_date')
-
-
-admin.site.register(ProjectCategory, ProjectCategoryAdmin)
-admin.site.register(Project, ProjectAdmin)
-admin.site.register(ProjectPart, ProjectPartAdmin)
-admin.site.register(ProjectRun, ProjectRunAdmin)

InvenTree/project/migrations/0001_initial.py

@@ -1,72 +0,0 @@
-# -*- coding: utf-8 -*-
-# Generated by Django 1.11 on 2018-04-12 05:02
-from __future__ import unicode_literals
-
-import django.core.validators
-from django.db import migrations, models
-import django.db.models.deletion
-
-
-class Migration(migrations.Migration):
-
-    initial = True
-
-    dependencies = [
-        ('part', '0001_initial'),
-    ]
-
-    operations = [
-        migrations.CreateModel(
-            name='Project',
-            fields=[
-                ('id', models.AutoField(auto_created=True, primary_key=True, serialize=False, verbose_name='ID')),
-                ('name', models.CharField(max_length=100)),
-                ('description', models.CharField(blank=True, max_length=500)),
-            ],
-        ),
-        migrations.CreateModel(
-            name='ProjectCategory',
-            fields=[
-                ('id', models.AutoField(auto_created=True, primary_key=True, serialize=False, verbose_name='ID')),
-                ('name', models.CharField(max_length=100)),
-                ('description', models.CharField(blank=True, max_length=250)),
-                ('parent', models.ForeignKey(blank=True, null=True, on_delete=django.db.models.deletion.CASCADE, related_name='children', to='project.ProjectCategory')),
-            ],
-            options={
-                'verbose_name': 'Project Category',
-                'verbose_name_plural': 'Project Categories',
-            },
-        ),
-        migrations.CreateModel(
-            name='ProjectPart',
-            fields=[
-                ('id', models.AutoField(auto_created=True, primary_key=True, serialize=False, verbose_name='ID')),
-                ('quantity', models.PositiveIntegerField(default=1, validators=[django.core.validators.MinValueValidator(0)])),
-                ('output', models.BooleanField(default=False)),
-                ('part', models.ForeignKey(on_delete=django.db.models.deletion.CASCADE, to='part.Part')),
-                ('project', models.ForeignKey(on_delete=django.db.models.deletion.CASCADE, to='project.Project')),
-            ],
-        ),
-        migrations.CreateModel(
-            name='ProjectRun',
-            fields=[
-                ('id', models.AutoField(auto_created=True, primary_key=True, serialize=False, verbose_name='ID')),
-                ('quantity', models.PositiveIntegerField(default=1, validators=[django.core.validators.MinValueValidator(0)])),
-                ('run_date', models.DateField(blank=True, null=True)),
-                ('project', models.ForeignKey(on_delete=django.db.models.deletion.CASCADE, to='project.Project')),
-            ],
-        ),
-        migrations.AddField(
-            model_name='project',
-            name='category',
-            field=models.ForeignKey(on_delete=django.db.models.deletion.CASCADE, related_name='projects', to='project.ProjectCategory'),
-        ),
-        migrations.AlterUniqueTogether(
-            name='projectpart',
-            unique_together=set([('part', 'project')]),
-        ),
-        migrations.AlterUniqueTogether(
-            name='project',
-            unique_together=set([('name', 'category')]),
-        ),
-    ]

InvenTree/project/models.py

@@ -1,96 +0,0 @@
-from __future__ import unicode_literals
-# from django.utils.translation import ugettext as _
-
-from django.db import models
-
-from InvenTree.models import InvenTreeTree
-from part.models import Part
-from django.core.validators import MinValueValidator
-
-
-class ProjectCategory(InvenTreeTree):
-    """ ProjectCategory provides hierarchical organization of Project objects.
-    Each ProjectCategory can contain zero-or-more child categories,
-    and in turn can have zero-or-one parent category.
-    """
-
-    class Meta:
-        verbose_name = "Project Category"
-        verbose_name_plural = "Project Categories"
-
-    @property
-    def projects(self):
-        return self.project_set.all()
-
-
-class Project(models.Model):
-    """ A Project takes multiple Part objects.
-    A project can output zero-or-more Part objects
-    """
-
-    name = models.CharField(max_length=100)
-    description = models.CharField(max_length=500, blank=True)
-    category = models.ForeignKey(ProjectCategory, on_delete=models.CASCADE, related_name='projects')
-
-    class Meta:
-        unique_together = ('name', 'category')
-
-    def __str__(self):
-        return self.name
-
-
-class ProjectPart(models.Model):
-    """ A project part associates a single part with a project
-    The quantity of parts required for a single-run of that project is stored.
-    The overage is the number of extra parts that are generally used for a single run.
-    """
-
-    part = models.ForeignKey(Part, on_delete=models.CASCADE)
-    project = models.ForeignKey(Project, on_delete=models.CASCADE)
-    quantity = models.PositiveIntegerField(default=1, validators=[MinValueValidator(0)])
-
-    class Meta:
-        unique_together = ('part', 'project')
-
-    """
-    # TODO - Add overage model fields
-
-    # Overage types
-    OVERAGE_PERCENT = 0
-    OVERAGE_ABSOLUTE = 1
-
-    OVARAGE_CODES = {
-        OVERAGE_PERCENT: _("Percent"),
-        OVERAGE_ABSOLUTE: _("Absolute")
-    }
-
-    overage = models.FloatField(default=0)
-    overage_type = models.PositiveIntegerField(
-        default=OVERAGE_ABSOLUTE,
-        choices=OVARAGE_CODES.items(),
-        validators=[MinValueValidator(0)])
-    """
-
-    # Set if the part is generated by the project,
-    # rather than being consumed by the project
-    output = models.BooleanField(default=False)
-
-    def __str__(self):
-        return "{quan} x {name}".format(
-            name=self.part.name,
-            quan=self.quantity)
-
-
-class ProjectRun(models.Model):
-    """ A single run of a particular project.
-    Tracks the number of 'units' made in the project.
-    Provides functionality to update stock,
-    based on both:
-    a) Parts used (project inputs)
-    b) Parts produced (project outputs)
-    """
-
-    project = models.ForeignKey(Project, on_delete=models.CASCADE)
-    quantity = models.PositiveIntegerField(default=1, validators=[MinValueValidator(0)])
-
-    run_date = models.DateField(blank=True, null=True)

InvenTree/project/serializers.py

@@ -1,47 +0,0 @@
-from rest_framework import serializers
-
-from .models import ProjectCategory, Project, ProjectPart, ProjectRun
-
-
-class ProjectPartSerializer(serializers.HyperlinkedModelSerializer):
-
-    class Meta:
-        model = ProjectPart
-        fields = ('url',
-                  'part',
-                  'project',
-                  'quantity',
-                  'output')
-
-
-class ProjectSerializer(serializers.HyperlinkedModelSerializer):
-
-    class Meta:
-        model = Project
-        fields = ('url',
-                  'name',
-                  'description',
-                  'category')
-
-
-class ProjectCategorySerializer(serializers.HyperlinkedModelSerializer):
-
-    class Meta:
-        model = ProjectCategory
-        fields = ('url',
-                  'name',
-                  'description',
-                  'parent',
-                  'pathstring')
-
-
-class ProjectRunSerializer(serializers.HyperlinkedModelSerializer):
-
-    class Meta:
-        model = ProjectRun
-        fields = ('url',
-                  'project',
-                  'quantity',
-                  'run_date')
-
-        read_only_fields = ('run_date',)

InvenTree/project/tests.py

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

InvenTree/project/urls.py

@@ -1,39 +0,0 @@
-from django.conf.urls import url
-
-from . import views
-
-prj_part_urls = [
-    # Detail of a single project part
-    url(r'^(?P<pk>[0-9]+)/?$', views.ProjectPartDetail.as_view(), name='projectpart-detail'),
-
-    # List project parts, with optional filters
-    url(r'^\?.*/?$', views.ProjectPartsList.as_view()),
-    url(r'^$', views.ProjectPartsList.as_view())
-]
-
-prj_cat_urls = [
-    # Detail of a single project category
-    url(r'^(?P<pk>[0-9]+)/?$', views.ProjectCategoryDetail.as_view(), name='projectcategory-detail'),
-
-    # List of project categories, with filters
-    url(r'^\?.*/?$', views.ProjectCategoryList.as_view()),
-    url(r'^$', views.ProjectCategoryList.as_view())
-]
-
-prj_urls = [
-    # Individual project URL
-    url(r'^(?P<pk>[0-9]+)/?$', views.ProjectDetail.as_view(), name='project-detail'),
-
-    # List of all projects
-    url(r'^\?.*/?$', views.ProjectList.as_view()),
-    url(r'^$', views.ProjectList.as_view())
-]
-
-prj_run_urls = [
-    # Individual project URL
-    url(r'^(?P<pk>[0-9]+)/?$', views.ProjectRunDetail.as_view(), name='projectrun-detail'),
-
-    # List of all projects
-    url(r'^\?.*/?$', views.ProjectRunList.as_view()),
-    url(r'^$', views.ProjectRunList.as_view())
-]

InvenTree/project/views.py

@@ -1,183 +0,0 @@
-from django_filters.rest_framework import FilterSet, DjangoFilterBackend
-
-from rest_framework import generics, permissions
-from InvenTree.models import FilterChildren
-from .models import ProjectCategory, Project, ProjectPart, ProjectRun
-from .serializers import ProjectSerializer
-from .serializers import ProjectCategorySerializer
-from .serializers import ProjectPartSerializer
-from .serializers import ProjectRunSerializer
-
-
-class ProjectDetail(generics.RetrieveUpdateDestroyAPIView):
-    """
-
-    get:
-    Return a single Project object
-
-    post:
-    Update a Project
-
-    delete:
-    Remove a Project
-
-    """
-
-    queryset = Project.objects.all()
-    serializer_class = ProjectSerializer
-    permission_classes = (permissions.IsAuthenticatedOrReadOnly,)
-
-
-class ProjectFilter(FilterSet):
-
-    class Meta:
-        model = Project
-        fields = ['category']
-
-
-class ProjectList(generics.ListCreateAPIView):
-    """
-
-    get:
-    Return a list of all Project objects
-    (with optional query filters)
-
-    post:
-    Create a new Project
-
-    """
-
-    queryset = Project.objects.all()
-    serializer_class = ProjectSerializer
-    permission_classes = (permissions.IsAuthenticatedOrReadOnly,)
-    filter_backends = (DjangoFilterBackend,)
-    filter_class = ProjectFilter
-
-
-class ProjectCategoryDetail(generics.RetrieveUpdateAPIView):
-    """
-
-    get:
-    Return a single ProjectCategory object
-
-    post:
-    Update a ProjectCategory
-
-    delete:
-    Remove a ProjectCategory
-
-    """
-
-    queryset = ProjectCategory.objects.all()
-    serializer_class = ProjectCategorySerializer
-    permission_classes = (permissions.IsAuthenticatedOrReadOnly,)
-
-
-class ProjectCategoryList(generics.ListCreateAPIView):
-    """
-
-    get:
-    Return a list of all ProjectCategory objects
-
-    post:
-    Create a new ProjectCategory
-
-    """
-
-    def get_queryset(self):
-        params = self.request.query_params
-
-        categories = ProjectCategory.objects.all()
-
-        categories = FilterChildren(categories, params.get('parent', None))
-
-        return categories
-
-    serializer_class = ProjectCategorySerializer
-    permission_classes = (permissions.IsAuthenticatedOrReadOnly,)
-
-
-class ProjectPartFilter(FilterSet):
-
-    class Meta:
-        model = ProjectPart
-        fields = ['project', 'part']
-
-
-class ProjectPartsList(generics.ListCreateAPIView):
-    """
-
-    get:
-    Return a list of all ProjectPart objects
-
-    post:
-    Create a new ProjectPart
-
-    """
-
-    serializer_class = ProjectPartSerializer
-    permission_classes = (permissions.IsAuthenticatedOrReadOnly,)
-    queryset = ProjectPart.objects.all()
-    filter_backends = (DjangoFilterBackend,)
-    filter_class = ProjectPartFilter
-
-
-class ProjectPartDetail(generics.RetrieveUpdateDestroyAPIView):
-    """
-
-    get:
-    Return a single ProjectPart object
-
-    post:
-    Update a ProjectPart
-
-    delete:
-    Remove a ProjectPart
-
-    """
-
-    queryset = ProjectPart.objects.all()
-    serializer_class = ProjectPartSerializer
-    permission_classes = (permissions.IsAuthenticatedOrReadOnly,)
-
-
-class ProjectRunDetail(generics.RetrieveUpdateDestroyAPIView):
-    """
-
-    get:
-    Return a single ProjectRun
-
-    post:
-    Update a ProjectRun
-
-    delete:
-    Remove a ProjectRun
-    """
-
-    queryset = ProjectRun.objects.all()
-    serializer_class = ProjectRunSerializer
-    permission_classes = (permissions.IsAuthenticatedOrReadOnly,)
-
-
-class ProjectRunFilter(FilterSet):
-
-    class Meta:
-        model = ProjectRun
-        fields = ['project']
-
-
-class ProjectRunList(generics.ListCreateAPIView):
-    """
-
-    get:
-    Return a list of all ProjectRun objects
-
-    post:
-    Create a new ProjectRun object
-    """
-
-    queryset = ProjectRun.objects.all()
-    serializer_class = ProjectRunSerializer
-    permission_classes = (permissions.IsAuthenticatedOrReadOnly,)
-    filter_backends = (DjangoFilterBackend,)
-    filter_class = ProjectRunFilter

InvenTree/stock/migrations/0010_stockitem_build.py

@@ -0,0 +1,22 @@
+# -*- coding: utf-8 -*-
+# Generated by Django 1.11 on 2018-04-16 14:03
+from __future__ import unicode_literals
+
+from django.db import migrations, models
+import django.db.models.deletion
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('build', '0001_initial'),
+        ('stock', '0009_auto_20180416_1253'),
+    ]
+
+    operations = [
+        migrations.AddField(
+            model_name='stockitem',
+            name='build',
+            field=models.ForeignKey(blank=True, null=True, on_delete=django.db.models.deletion.SET_NULL, to='build.Build'),
+        ),
+    ]

InvenTree/stock/models.py

@@ -3,16 +3,16 @@ from django.utils.translation import ugettext as _
 from django.db import models, transaction
 from django.core.validators import MinValueValidator
 from django.contrib.auth.models import User
+from django.db.models.signals import pre_delete
+from django.dispatch import receiver
+
+from datetime import datetime
 
 from supplier.models import SupplierPart
 from supplier.models import Customer
 from part.models import Part
 from InvenTree.models import InvenTreeTree
-
+from build.models import Build
-from datetime import datetime
-
-from django.db.models.signals import pre_delete
-from django.dispatch import receiver
 
 
 class StockLocation(InvenTreeTree):
@@ -95,6 +95,9 @@ class StockItem(models.Model):
     batch = models.CharField(max_length=100, blank=True,
                              help_text='Batch code for this stock item')
 
+    # If this part was produced by a build, point to that build here
+    build = models.ForeignKey(Build, on_delete=models.SET_NULL, blank=True, null=True)
+
     # Quantity of this stock item. Value may be overridden by other settings
     quantity = models.PositiveIntegerField(validators=[MinValueValidator(0)])
 
@@ -108,7 +111,6 @@ class StockItem(models.Model):
 
     review_needed = models.BooleanField(default=False)
 
-    # Stock status types
     ITEM_OK = 10
     ITEM_ATTENTION = 50
     ITEM_DAMAGED = 55

Makefile

@@ -18,6 +18,7 @@ migrate:
 	python InvenTree/manage.py makemigrations part
 	python InvenTree/manage.py makemigrations stock
 	python InvenTree/manage.py makemigrations supplier
+	python InvenTree/manage.py makemigrations build
 	python InvenTree/manage.py migrate --run-syncdb
 	python InvenTree/manage.py check