Add summary to line list

A function field summary is added which takes the first line of description
field. This is useful to identify line without product (only with description)
in the list.

issue9695
review292431002

CHANGELOG

@@ -1,3 +1,4 @@
+* Add summary to sale line list
 * Add TaxableMixin to sale line
 
 Version 5.8.0 - 2020-11-02

sale.py

@@ -14,7 +14,7 @@ from trytond.wizard import Wizard, StateAction, StateView, StateTransition, \
     Button
 from trytond.pyson import If, Eval, Bool, PYSONEncoder
 from trytond.transaction import Transaction
-from trytond.tools import sortable_values
+from trytond.tools import sortable_values, firstline
 from trytond.pool import Pool
 
 from trytond.ir.attachment import AttachmentCopyMixin
@@ -1119,6 +1119,7 @@ class SaleLine(TaxableMixin, sequence_ordered(), ModelSQL, ModelView):
             'readonly': Eval('sale_state') != 'draft',
             },
         depends=['sale_state'])
+    summary = fields.Function(fields.Char('Summary'), 'on_change_with_summary')
     note = fields.Text('Note')
     taxes = fields.Many2Many('sale.line-account.tax', 'line', 'tax', 'Taxes',
         order=[('tax.sequence', 'ASC'), ('tax.id', 'ASC')],
@@ -1334,6 +1335,10 @@ class SaleLine(TaxableMixin, sequence_ordered(), ModelSQL, ModelView):
     def on_change_taxes(self):
         self.on_change_quantity()
 
+    @fields.depends('description')
+    def on_change_with_summary(self, name=None):
+        return firstline(self.description or '')
+
     @fields.depends('type', 'quantity', 'unit_price', 'unit', 'sale',
         '_parent_sale.currency')
     def on_change_with_amount(self):

view/sale_line_tree.xml

@@ -5,6 +5,7 @@ this repository contains the full copyright notices and license terms. -->
     <field name="sale" expand="1"/>
     <field name="type"/>
     <field name="product" expand="1"/>
+    <field name="summary" expand="1"/>
     <field name="quantity" symbol="unit"/>
     <field name="unit_price" symbol="currency"/>
     <field name="taxes"/>

view/sale_line_tree_sequence.xml

@@ -5,6 +5,7 @@ this repository contains the full copyright notices and license terms. -->
     <field name="sale" expand="1"/>
     <field name="type"/>
     <field name="product" expand="1"/>
+    <field name="summary" expand="1"/>
     <field name="quantity" symbol="unit"/>
     <field name="unit_price" symbol="currency"/>
     <field name="taxes"/>