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 purchase line list
 * Set payment term and invoice method from last party's purchases
 
 Version 5.8.0 - 2020-11-02

purchase.py

@@ -19,6 +19,7 @@ from trytond import backend
 from trytond.pyson import Eval, Bool, If, PYSONEncoder
 from trytond.transaction import Transaction
 from trytond.pool import Pool
+from trytond.tools import firstline
 
 from trytond.ir.attachment import AttachmentCopyMixin
 from trytond.ir.note import NoteCopyMixin
@@ -1095,6 +1096,7 @@ class Line(sequence_ordered(), ModelSQL, ModelView):
             'readonly': Eval('purchase_state') != 'draft',
             },
         depends=['purchase_state'])
+    summary = fields.Function(fields.Char('Summary'), 'on_change_with_summary')
     note = fields.Text('Note')
     taxes = fields.Many2Many('purchase.line-account.tax',
         'line', 'tax', 'Taxes',
@@ -1355,6 +1357,10 @@ class Line(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', 'purchase',
         '_parent_purchase.currency')
     def on_change_with_amount(self):

view/purchase_line_tree.xml

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

view/purchase_line_tree_sequence.xml

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