Show reconciliations lines as payment lines

Once the invoice is paid, we can show the reconciliation lines instead of the
payment lines.

issue8157
review70581002

CHANGELOG

@@ -1,3 +1,4 @@
+* Show reconciliation lines as payment lines
 * Fill in origin of move line
 * Remove partial payment when cancel
 * Set cancel state when credit with refund

invoice.py

@@ -205,6 +205,12 @@ class Invoice(Workflow, ModelSQL, ModelView, TaxableMixin):
             'readonly': Eval('state') != 'posted',
             },
         depends=['state', 'account', 'party', 'id', 'type', 'total_amount'])
+    reconciliation_lines = fields.Function(fields.Many2Many(
+            'account.move.line', None, None, "Payment Lines",
+            states={
+                'invisible': Eval('state') != 'paid',
+                }),
+        'get_reconciliation_lines')
     amount_to_pay_today = fields.Function(fields.Numeric('Amount to Pay Today',
             digits=(16, Eval('currency_digits', 2)),
             depends=['currency_digits']), 'get_amount_to_pay')
@@ -646,6 +652,17 @@ class Invoice(Workflow, ModelSQL, ModelView, TaxableMixin):
                 lines[invoice_id].append(line_id)
         return lines
 
+    def get_reconciliation_lines(self, name):
+        if self.state != 'paid':
+            return
+        lines = set()
+        for line in self.move.lines:
+            if line.account == self.account and line.reconciliation:
+                for line in line.reconciliation.lines:
+                    if line not in self.move.lines:
+                        lines.add(line)
+        return [l.id for l in sorted(lines, key=lambda l: l.date)]
+
     @classmethod
     def get_amount_to_pay(cls, invoices, name):
         pool = Pool()

tests/scenario_invoice.rst

@@ -306,6 +306,8 @@ Pay invoice::
 
     >>> invoice.state
     'paid'
+    >>> sorted(l.credit for l in invoice.reconciliation_lines)
+    [Decimal('1.00'), Decimal('20.00'), Decimal('99.00'), Decimal('120.00')]
 
 Create empty invoice::
 

view/invoice_form.xml

@@ -79,6 +79,7 @@ this repository contains the full copyright notices and license terms. -->
             <field name="amount_to_pay"/>
             <field name="payment_lines" colspan="4"
                 view_ids="account_invoice.move_line_view_list_payment"/>
+            <field name="reconciliation_lines" colspan="4" view_ids="account_invoice.move_line_view_list_payment"/>
         </page>
     </notebook>
     <field name="party_lang" invisible="1" colspan="6"/>