first commit

__init__.py

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+# -*- coding: utf-8 -*-
+# Account Reconciliation Reference addon
+from . import models

__manifest__.py

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+# -*- coding: utf-8 -*-
+{
+    'name': 'Account Reconciliation Reference',
+    'version': '17.0.1.0.2',
+    'category': 'Accounting/Accounting',
+    'summary': 'Show Reference on reconciliation kanban/list and add to search',
+    'description': """
+Show Reference on reconciliation UI
+- Adds 'ref' on bank reconciliation kanban cards (account.bank.statement.line)
+- Shows 'ref' column in bank reconciliation list view
+- Adds 'ref' field in bank reconciliation search
+- Also shows 'ref' in Journal Items Reconcile list
+- Shows 'ref' on Manual Operations panel and persists it on Validate
+""",
+    'author': 'Your Company',
+    'website': 'https://example.com',
+    'license': 'LGPL-3',
+    'depends': ['account_accountant'],
+    'data': [
+        'views/account_reconcile_views.xml',
+        'views/bank_rec_widget_views.xml',
+    ],
+    'assets': {
+        'web.assets_backend': [
+            'account_reconcile_reference/static/src/xml/bank_rec_form_inherit.xml',
+        ],
+    },
+    'installable': True,
+    'auto_install': False,
+    'application': False,
+}

models/__init__.py

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+# -*- coding: utf-8 -*-
+from . import bank_rec_widget

models/bank_rec_widget.py

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+# -*- coding: utf-8 -*-
+from odoo import models
+
+
+class BankRecWidget(models.Model):
+    _inherit = "bank.rec.widget"
+
+    def _line_value_changed_ref(self, line):
+        """
+        Persist the typed Reference as both:
+        - Journal Entry Reference (move.ref) so it shows on journal items
+        - Statement Line Reference (st_line.ref) so it remains visible after validation
+        Works for liquidity and non-liquidity lines in Manual Operations.
+        """
+        self.ensure_one()
+        ref_val = line.ref or False
+        # Persist to the move (journal entry)
+        self.st_line_id.move_id.ref = ref_val
+        # Persist to the statement line so the OWL form keeps showing it after validation
+        # (bank_rec_form.xml shows Reference for liquidity based on line.data.ref which maps to st_line.ref)
+        self.st_line_id.ref = ref_val
+        # Reload liquidity line and the record to reflect the updated reference
+        self._action_reload_liquidity_line()
+        self.return_todo_command = {"reset_record": True, "reset_global_info": True}
+
+    def _action_validate(self):
+        """
+        Ensure the typed Reference is flushed to the target move before reconciliation creates/replaces lines.
+        This covers the case when the user clicks Validate immediately after typing in Manual Operations.
+        """
+        self.ensure_one()
+        line = self._lines_get_line_in_edit_form()
+        if line and getattr(line, "ref", False):
+            ref_val = line.ref
+            self.st_line_id.move_id.ref = ref_val
+            self.st_line_id.ref = ref_val
+        return super()._action_validate()

static/src/xml/bank_rec_form_inherit.xml

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+<?xml version="1.0" encoding="utf-8"?>
+<templates xml:space="preserve">
+  <!-- Extend Manual Operations panel to show Reference for non-liquidity lines and make it editable -->
+  <t t-name="account_reconcile_reference.BankRecManualOperationsRef"
+     t-inherit="account_accountant.BankRecRecordNotebookManualOperations"
+     t-inherit-mode="extension">
+    <xpath expr="//div[@name='name']" position="after">
+      <div name="reference_manual"
+           t-if="line.data.flag !== 'liquidity' and (!reconciled or (reconciled and line.data.ref))"
+           class="o_wrap_field d-flex d-sm-contents flex-column mb-3 mb-sm-0">
+        <div class="o_cell o_wrap_label flex-grow-1 flex-sm-grow-0 w-100 text-break text-900">
+          <label class="o_form_label" t-att-class="{'o_form_label_readonly': readonly}">Reference</label>
+        </div>
+        <div class="o_cell o_wrap_input flex-grow-1 flex-sm-grow-0" style="width: 100%; margin-bottom: 5px">
+          <div class="o_field_widget o_field_char">
+            <!-- Reset patch: keep non-liquidity Reference read-only -->
+            <CharField name="'ref'" record="line" readonly="true"/>
+          </div>
+        </div>
+      </div>
+    </xpath>
+
+    <!-- Also make the original liquidity 'Reference' editable -->
+    <!-- Use a simpler XPath to avoid quoting issues in attribute predicates -->
+    <xpath expr="//div[@name='reference']//CharField" position="attributes">
+      <attribute name="readonly">false</attribute>
+    </xpath>
+  </t>
+</templates>

views/account_reconcile_views.xml

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+<?xml version="1.0" encoding="utf-8"?>
+<odoo>
+  <data>
+    <record id="view_move_line_reconcile_tree_inherit_ref_visible" model="ir.ui.view">
+      <field name="name">account.move.line.tree.reconcile.inherit.ref.visible</field>
+      <field name="model">account.move.line</field>
+      <field name="inherit_id" ref="account_accountant.view_move_line_reconcile_tree"/>
+      <field name="arch" type="xml">
+        <xpath expr="//tree//field[@name='ref']" position="attributes">
+          <attribute name="optional">show</attribute>
+          <attribute name="readonly">0</attribute>
+        </xpath>
+      </field>
+    </record>
+  </data>
+</odoo>

views/bank_rec_widget_views.xml

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+<?xml version="1.0" encoding="utf-8"?>
+<odoo>
+  <data>
+    <!-- Kanban: show ref on bank rec widget cards -->
+    <record id="view_bank_statement_line_kanban_inherit_ref" model="ir.ui.view">
+      <field name="name">account.bank.statement.line.kanban.inherit.ref</field>
+      <field name="model">account.bank.statement.line</field>
+      <field name="inherit_id" ref="account_accountant.view_bank_statement_line_kanban_bank_rec_widget"/>
+      <field name="arch" type="xml">
+        <xpath expr="//templates/t[@t-name='kanban-box']//div[@id='row2_col1']" position="after">
+          <div id="row2_ref" class="text-truncate text-muted">
+            <field name="ref"/>
+          </div>
+        </xpath>
+      </field>
+    </record>
+
+    <!-- Tree: show ref column by default -->
+    <record id="view_bank_statement_line_tree_inherit_ref_visible" model="ir.ui.view">
+      <field name="name">account.bank.statement.line.tree.inherit.ref.visible</field>
+      <field name="model">account.bank.statement.line</field>
+      <field name="inherit_id" ref="account_accountant.view_bank_statement_line_tree_bank_rec_widget"/>
+      <field name="arch" type="xml">
+        <xpath expr="//tree//field[@name='ref']" position="attributes">
+          <attribute name="optional">show</attribute>
+        </xpath>
+      </field>
+    </record>
+
+    <!-- Search: include ref -->
+    <record id="view_bank_statement_line_search_inherit_add_ref" model="ir.ui.view">
+      <field name="name">account.bank.statement.line.search.inherit.add.ref</field>
+      <field name="model">account.bank.statement.line</field>
+      <field name="inherit_id" ref="account_accountant.view_bank_statement_line_search_bank_rec_widget"/>
+      <field name="arch" type="xml">
+        <xpath expr="//search" position="inside">
+          <field name="ref"/>
+        </xpath>
+      </field>
+    </record>
+  </data>
+</odoo>