Use pairing to generate unique ID for purchase reporting

Purchase reporting are also grouped by currency so they should be part of the
ID.

Closes #13743

modules/purchase/purchase_reporting.py

@@ -12,7 +12,7 @@ from trytond.model import ModelSQL, ModelView, fields
 from trytond.modules.currency.fields import Monetary
 from trytond.pool import Pool
 from trytond.pyson import Eval, If
-from trytond.tools import pairwise_longest
+from trytond.tools import pairwise_longest, sql_pairing, unpair
 from trytond.tools.chart import sparkline
 from trytond.transaction import Transaction
 
@@ -282,12 +282,22 @@ class Supplier(SupplierMixin, Abstract, ModelView):
     @classmethod
     def _column_id(cls, tables):
         purchase = tables['line.purchase']
-        return purchase.party
+        return sql_pairing(purchase.party, purchase.currency)
 
 
 class SupplierTimeseries(SupplierMixin, AbstractTimeseries, ModelView):
     __name__ = 'purchase.reporting.supplier.time_series'
 
+    supplier_currency = fields.Integer("Supplier - Currency")
+
+    @classmethod
+    def _columns(cls, tables):
+        purchase = tables['line.purchase']
+        return super()._columns(tables) + [
+            sql_pairing(
+                purchase.party, purchase.currency).as_('supplier_currency'),
+            ]
+
 
 class ProductMixin(object):
     __slots__ = ()
@@ -321,7 +331,13 @@ class ProductMixin(object):
         purchase = tables['line.purchase']
         where = super()._where(tables)
         where &= line.product != Null
-        where &= purchase.party == context.get('supplier')
+        if context.get('supplier_currency') is not None:
+            supplier, currency = unpair(context['supplier_currency'])
+        else:
+            supplier = context.get('supplier')
+            currency = context.get('currency')
+        where &= purchase.party == supplier
+        where &= purchase.currency == currency
         return where
 
     def get_rec_name(self, name):
@@ -355,8 +371,20 @@ class Product(ProductMixin, Abstract, ModelView):
     @classmethod
     def _column_id(cls, tables):
         line = tables['line']
-        return line.product
+        purchase = tables['line.purchase']
+        return sql_pairing(line.product, purchase.currency)
 
 
 class ProductTimeseries(ProductMixin, AbstractTimeseries, ModelView):
     __name__ = 'purchase.reporting.product.time_series'
+
+    product_currency = fields.Integer("Product - Currency")
+
+    @classmethod
+    def _columns(cls, tables):
+        line = tables['line']
+        purchase = tables['line.purchase']
+        return super()._columns(tables) + [
+            sql_pairing(
+                line.product, purchase.currency).as_('product_currency'),
+            ]

modules/purchase/purchase_reporting.xml

@@ -249,7 +249,7 @@ this repository contains the full copyright notices and license terms. -->
             <field name="context_model">purchase.reporting.context</field>
             <field
                 name="domain"
-                eval="[('supplier', '=', Eval('active_id', -1))]"
+                eval="[('supplier_currency', '=', Eval('active_id', -1))]"
                 pyson="1"/>
             <field name="order" eval="[('date', 'DESC')]" pyson="1"/>
         </record>
@@ -326,7 +326,7 @@ this repository contains the full copyright notices and license terms. -->
             <field name="name">Purchases per Product</field>
             <field name="res_model">purchase.reporting.product</field>
             <field name="context_model">purchase.reporting.context</field>
-            <field name="context" eval="{'supplier': Eval('active_id')}" pyson="1"/>
+            <field name="context" eval="{'supplier_currency': Eval('active_id')}" pyson="1"/>
         </record>
         <record model="ir.action.act_window.view" id="act_reporting_product_view1">
             <field name="sequence" eval="10"/>
@@ -400,7 +400,7 @@ this repository contains the full copyright notices and license terms. -->
             <field name="res_model">purchase.reporting.product.time_series</field>
             <field name="context_model">purchase.reporting.context</field>
             <field name="domain"
-                eval="[('product', '=', Eval('active_id', -1))]"
+                eval="[('product_currency', '=', Eval('active_id', -1))]"
                 pyson="1"/>
             <field name="order" eval="[('date', 'DESC')]" pyson="1"/>
         </record>

modules/purchase/tests/scenario_purchase_reporting.rst

@@ -126,6 +126,7 @@ Check purchase reporting per product without supplier::
 Check purchase reporting per product with supplier::
 
     >>> context['supplier'] = supplier1.id
+    >>> context['currency'] = purchase1.currency.id
     >>> with config.set_context(context=context):
     ...     reports = Product.find([])
     ...     time_series = ProductTimeseries.find([])

modules/purchase/view/purchase_reporting_main_list.xml

@@ -3,6 +3,6 @@
 this repository contains the full copyright notices and license terms. -->
 <tree keyword_open="1">
     <field name="number" sum="1"/>
-    <field name="expense" sum="1"/>
+    <field name="expense"/>
     <field name="expense_trend" expand="1"/>
 </tree>

modules/purchase/view/purchase_reporting_main_time_series_list.xml

@@ -4,5 +4,5 @@ this repository contains the full copyright notices and license terms. -->
 <tree>
     <field name="date"/>
     <field name="number" sum="1"/>
-    <field name="expense" sum="1"/>
+    <field name="expense"/>
 </tree>