Add view suppliers view and suppliers API endpoint

This adds a simple view (mostly cribbed from the component view but
without the database stats) to view details for a given supplier,
currently lists the components they supply and name/email address pairs for
representatives however there's room to add fields for other representative
contact and company information as well.

On the API side this adds 3 endpoints:
    * api/suppliers: returns a list of all suppliers and their
    representatives
    * api/suppliers/<id>: returns a supplier object containing the
    representatives for the given supplier
    * api/suppliers/<id>/components: returns a supplier object
    containing a list of components supplied by the given supplier

This also contains minor documentation and base template changes, fixing
the navigation menu to use class="active" on the currently selected page
(previously didn't work due to page_name capitalization)

1 files changed, 11 insertions, 0 deletions

diff --git a/procurement/serializers.py b/procurement/serializers.py
index 0466402..b3e9280 100644
--- a/procurement/serializers.py
+++ b/procurement/serializers.py
@@ -13,6 +13,17 @@ class SupplierSerializer(serializers.ModelSerializer):
         model = Supplier
         exclude = ('created', 'updated')
 
+class SupplierComponentSerializer(serializers.ModelSerializer):
+    text = serializers.CharField(source="__str__", read_only=True)
+    class Meta:
+        model = Component
+        exclude = ('created', 'updated')
+
+class SupplierComponentsSerializer(serializers.ModelSerializer):
+    components = SupplierComponentSerializer(many=True, read_only=True)
+    class Meta:
+        model = Supplier
+        exclude = ('created', 'updated')
 
 class ComponentSerializer(serializers.ModelSerializer):
     text = serializers.CharField(source='__str__', read_only=True)