Add start_date and end_date on bank statements

account_usability/account.py

@@ -209,6 +209,25 @@ class AccountMoveLine(models.Model):
                 self.credit = amount_company_currency
 
 
+class AccountBankStatement(models.Model):
+    _inherit = 'account.bank.statement'
+
+    start_date = fields.Date(
+        compute='_compute_dates', string='Start Date', readonly=True,
+        store=True)
+    end_date = fields.Date(
+        compute='_compute_dates', string='End Date', readonly=True,
+        store=True)
+
+    @api.multi
+    @api.depends('line_ids.date')
+    def _compute_dates(self):
+        for st in self:
+            dates = [line.date for line in st.line_ids]
+            st.start_date = dates and min(dates) or False
+            st.end_date = dates and max(dates) or False
+
+
 class AccountBankStatementLine(models.Model):
     _inherit = 'account.bank.statement.line'
 

account_usability/account_view.xml

@@ -233,6 +233,49 @@ module -->
                 string="View Account Move" icon="fa fa-arrow-right"
                 attrs="{'invisible': [('journal_entry_ids', '=', [])]}"/>
         </xpath>
+        <field name="date" position="after">
+            <field name="start_date"/>
+            <field name="end_date"/>
+        </field>
+    </field>
+</record>
+
+<record id="view_bank_statement_tree" model="ir.ui.view">
+    <field name="name">usability.account.bank.statement.tree</field>
+    <field name="model">account.bank.statement</field>
+    <field name="inherit_id" ref="account.view_bank_statement_tree"/>
+    <field name="arch" type="xml">
+        <field name="date" position="attributes">
+            <attribute name="invisible">1</attribute>
+        </field>
+        <field name="journal_id" position="after">
+            <field name="start_date"/>
+            <field name="end_date"/>
+        </field>
+    </field>
+</record>
+
+<record id="view_bank_statement_search" model="ir.ui.view">
+    <field name="name">usability.account.bank.statement.search</field>
+    <field name="model">account.bank.statement</field>
+    <field name="inherit_id" ref="account.view_bank_statement_search"/>
+    <field name="arch" type="xml">
+        <field name="date" position="attributes">
+            <attribute name="invisible">1</attribute>
+        </field>
+        <field name="date" position="after">
+            <field name="start_date"/>
+            <field name="end_date"/>
+        </field>
+        <filter context="{'group_by': 'date'}" position="attributes">
+            <attribute name="invisible">1</attribute>
+        </filter>
+        <filter context="{'group_by': 'date'}" position="after">
+            <filter name="start_date_groupby" string="Start Date"
+                context="{'group_by': 'start_date'}"/>
+            <filter name="end_date_groupby" string="End Date"
+                context="{'group_by': 'end_date'}"/>
+        </filter>
     </field>
 </record>