Implemented bidirectional traversal for PART and STOCK apps

- Added list view for StockItems

InvenTree/stock/templates/stock/index.html

@@ -0,0 +1,38 @@
+{% extends "base.html" %}
+
+{% block content %}
+
+{% include "stock/loc_link.html" with location=location %}
+
+{% if children|length > 0 %}
+<table>
+    <tr><th>Sublocations</th></tr>
+{% for child in children %}
+<tr>
+    <td><a href="/stock/list/?location={{ child.id }}">{{ child.name }}</a></td>
+</tr>
+{% endfor %}
+</table>
+{% endif %}
+
+{% if items|length > 0 %}
+<table>
+    <tr>
+        <th>Part</th>
+        <th>Stock</th>
+        <th>Stocktake</th>
+        <th>Notes</th>
+    </tr>
+{% for item in items %}
+<tr>
+    <td><a href="{% url 'part-detail' item.part.id %}">{{ item.part.name }}</a></td>
+    <td>{{ item.quantity }}</td>
+    <td>{{ item.stocktake_date }}</td>
+    <td>{{ item.notes }}</td>
+</tr>
+{% endfor %}
+</table>
+{% else %}
+There are no parts in this location.
+{% endif %}
+{% endblock %}

InvenTree/stock/templates/stock/loc_link.html

@@ -0,0 +1,9 @@
+<div class="container">
+<a href="/stock/list/">Stock</a> >
+{% if location %}
+{% for path_item in location.parentpath %}
+<a href="/stock/list/?location={{ path_item.id }}">{{ path_item.name }}</a> >
+{% endfor %}
+<a href="/stock/list/?location={{ location.id }}">{{ location.name }}</a>
+{% endif %}
+</div>

InvenTree/stock/urls.py

@@ -1,4 +1,5 @@
 from django.conf.urls import url, include
+from django.views.generic.base import RedirectView
 
 from . import views
 from . import api
@@ -11,7 +12,7 @@ stock_endpoints = [
     url(r'^add-stock/?$', api.AddStockEndpoint.as_view(), name='stockitem-add-stock'),
 ]
 
-stock_urls = [
+stock_api_urls = [
     # Detail for a single stock item
     url(r'^(?P<pk>[0-9]+)/', include(stock_endpoints)),
 
@@ -20,10 +21,25 @@ stock_urls = [
     url(r'^$', api.StockList.as_view()),
 ]
 
-stock_loc_urls = [
+stock_api_loc_urls = [
     url(r'^(?P<pk>[0-9]+)/?$', api.LocationDetail.as_view(), name='stocklocation-detail'),
 
     url(r'^\?.*/?$', api.LocationList.as_view()),
 
     url(r'^$', api.LocationList.as_view())
 ]
+
+
+# URL list for web interface
+stock_detail_urls = [
+    url('', views.detail, name='stock-detail'),
+]
+stock_urls = [
+    # Individual stock items
+    url(r'^(?P<pk>\d+)/', include(stock_detail_urls)),
+
+    url('list', views.index, name='stock=index'),
+
+    # Redirect any other patterns
+    url(r'^.*$', RedirectView.as_view(url='list', permanent=False), name='stock-index'),
+]

InvenTree/stock/views.py

@@ -0,0 +1,43 @@
+from django.http import HttpResponse
+from django.template import loader
+
+from django.shortcuts import get_object_or_404, render
+
+from .models import StockItem, StockLocation
+
+def index(request):
+    template = loader.get_template('stock/index.html')
+
+    items = StockItem.objects.all()
+
+    location = None
+
+    if 'location' in request.GET:
+        loc_id = request.GET['location']
+
+        location = get_object_or_404(StockLocation, pk=loc_id)
+
+        items = items.filter(location = loc_id)
+
+        children = StockLocation.objects.filter(parent = loc_id)
+
+    else:
+        # No stock items can exist without a location
+        items = None
+        location = None
+        children = StockLocation.objects.filter(parent__isnull=True)
+
+    context = {
+        'items' : items,
+        'location' : location,
+        'children' : children,
+    }
+
+    return HttpResponse(template.render(context, request))
+
+
+def detail(request, pk):
+
+    item = get_object_or_404(Stock, pk=pk)
+
+    return render(request, 'stock/detail.html', {'item' : item})