add price field renderers

rattail/pyramid/forms.py

@@ -34,7 +34,7 @@ from edbob.pyramid import Session
 import rattail
 
 
-__all__ = ['UpcFieldRenderer']
+__all__ = ['PriceFieldRenderer', 'RegularPriceFieldRenderer', 'UpcFieldRenderer']
 
 
 class BatchIdFieldRenderer(formalchemy.FieldRenderer):
@@ -58,6 +58,56 @@ class BatchIdFieldRenderer(formalchemy.FieldRenderer):
 #     def render(self, options, **kwargs):
         
 
+class PriceFieldRenderer(formalchemy.fields.FloatFieldRenderer):
+    """
+    Generic renderer for price (currency) fields.
+    """
+
+    def render_readonly(self, **kwargs):
+        value = self.raw_value
+        if value is None:
+            return ''
+        return '$ %0.2f' % value
+
+
+class RegularPriceFieldRenderer(PriceFieldRenderer):
+    """
+    Custom renderer for the :attr:`rattail.Product.regular_price` field.
+    """
+
+    def render_readonly(self, **kwargs):
+        prod = self.field.model
+
+        if prod.regular_price and prod.package_price:
+            return '$ %0.2f  ($ %0.2f / %u)' % (
+                prod.regular_price, prod.package_price, prod.package_price_quantity)
+
+        elif prod.regular_price:
+            return '$ %0.2f' % prod.regular_price
+
+        elif prod.package_price:
+            return '$ %0.2f / %u' % (
+                prod.package_price, prod.package_price_quantity)
+
+        return ''
+
+
+class SalePriceFieldRenderer(PriceFieldRenderer):
+    """
+    Custom renderer for the :attr:`rattail.Product.sale_price` field.
+    """
+
+    def render_readonly(self, **kwargs):
+        prod = self.field.model
+
+        if prod.sale_price:
+            if prod.sale_price_quantity and prod.sale_price_quantity != 1:
+                return '$ %0.2f / %u' % (
+                    prod.sale_price, prod.sale_price_quantity)
+            return '$ %0.2f' % prod.sale_price
+
+        return ''
+
 
 class UpcFieldRenderer(formalchemy.TextFieldRenderer):
     """