Improve views for taxes, esp. in POS batches

tailbone/views/batch/pos.py

@@ -26,6 +26,8 @@ Views for POS batches
 
 from rattail.db.model import POSBatch, POSBatchRow
 
+from webhelpers2.html import HTML
+
 from tailbone.views.batch import BatchMasterView
 
 
@@ -39,7 +41,11 @@ class POSBatchView(BatchMasterView):
     route_prefix = 'batch.pos'
     url_prefix = '/batch/pos'
     creatable = False
+    editable = False
     cloneable = True
+    refreshable = False
+    rows_deletable = False
+    rows_bulk_deletable = False
 
     labels = {
         'terminal_id': "Terminal ID",
@@ -66,8 +72,7 @@ class POSBatchView(BatchMasterView):
         'params',
         'rowcount',
         'sales_total',
-        'tax1_total',
-        'tax2_total',
+        'taxes',
         'tender_total',
         'balance',
         'void',
@@ -89,6 +94,7 @@ class POSBatchView(BatchMasterView):
         'quantity',
         'sales_total',
         'tender_total',
+        'tax_code',
         'user',
     ]
 
@@ -102,8 +108,7 @@ class POSBatchView(BatchMasterView):
         'txn_price',
         'quantity',
         'sales_total',
-        'tax1_total',
-        'tax2_total',
+        'tax_code',
         'tender_total',
         'tender',
         'void',
@@ -126,8 +131,6 @@ class POSBatchView(BatchMasterView):
         g.set_link('created_by')
 
         g.set_type('sales_total', 'currency')
-        g.set_type('tax1_total', 'currency')
-        g.set_type('tax2_total', 'currency')
         g.set_type('tender_total', 'currency')
 
         # executed
@@ -149,13 +152,54 @@ class POSBatchView(BatchMasterView):
         f.set_renderer('customer', self.render_customer)
 
         f.set_type('sales_total', 'currency')
-        f.set_type('tax1_total', 'currency')
-        f.set_type('tax2_total', 'currency')
         f.set_type('tender_total', 'currency')
         f.set_type('tender_total', 'currency')
 
+        f.set_renderer('taxes', self.render_taxes)
+
         f.set_renderer('balance', lambda batch, field: app.render_currency(batch.get_balance()))
 
+    def render_taxes(self, batch, field):
+        route_prefix = self.get_route_prefix()
+
+        factory = self.get_grid_factory()
+        g = factory(
+            key=f'{route_prefix}.taxes',
+            data=[],
+            columns=[
+                'code',
+                'description',
+                'rate',
+                'total',
+            ],
+        )
+
+        return HTML.literal(
+            g.render_buefy_table_element(data_prop='taxesData'))
+
+    def template_kwargs_view(self, **kwargs):
+        kwargs = super().template_kwargs_view(**kwargs)
+        app = self.get_rattail_app()
+        batch = kwargs['instance']
+
+        taxes = []
+        for btax in batch.taxes.values():
+            data = {
+                'uuid': btax.uuid,
+                'code': btax.tax_code,
+                'description': btax.tax.description,
+                'rate': app.render_percent(btax.tax_rate),
+                'total': app.render_currency(btax.tax_total),
+            }
+            taxes.append(data)
+        taxes.sort(key=lambda t: t['code'])
+        kwargs['taxes_data'] = taxes
+
+        kwargs['execute_enabled'] = False
+        kwargs['why_not_execute'] = "POS batch must be executed at POS"
+
+        return kwargs
+
     def configure_row_grid(self, g):
         super().configure_row_grid(g)