Add support for mode, purchase relation for purchase batches

tailbone/forms/renderers/__init__.py

@@ -47,6 +47,6 @@ from .products import (ProductFieldRenderer, GPCFieldRenderer, BrandFieldRendere
 
 from .stores import StoreFieldRenderer
 
-from .vendors import VendorFieldRenderer
+from .vendors import VendorFieldRenderer, PurchaseFieldRenderer
 
 from .batch import BatchIDFieldRenderer, HandheldBatchFieldRenderer

tailbone/forms/renderers/vendors.py

@@ -26,6 +26,7 @@ Vendor Field Renderers
 
 from __future__ import unicode_literals, absolute_import
 
+import formalchemy as fa
 from webhelpers.html import tags
 
 from tailbone.forms.renderers.common import AutocompleteFieldRenderer
@@ -42,3 +43,15 @@ class VendorFieldRenderer(AutocompleteFieldRenderer):
         if not vendor:
             return ''
         return tags.link_to(vendor, self.request.route_url('vendors.view', uuid=vendor.uuid))
+
+
+class PurchaseFieldRenderer(fa.FieldRenderer):
+    """
+    Renderer for :class:`rattail.db.model.Purchase` relation fields.
+    """
+
+    def render_readonly(self, **kwargs):
+        purchase = self.raw_value
+        if not purchase:
+            return ''
+        return tags.link_to(purchase, self.request.route_url('purchases.view', uuid=purchase.uuid))