Add actual quantity on line

The actual quantity is computed once the order is processing. We take the
biggest quantity between the shipped and invoiced and ignore the cancelled.

issue9191
review319091002

CHANGELOG

@@ -1,3 +1,4 @@
+* Add actual quantity on line
 * Add return wizard
 * Add employee on purchases for some states
 * Add contact and invoice party on purchase

purchase.py

@@ -909,6 +909,9 @@ class Purchase(
     @classmethod
     @ModelView.button
     def process(cls, purchases):
+        pool = Pool()
+        Line = pool.get('purchase.line')
+        lines = []
         process, done = [], []
         cls.lock(purchases)
         for purchase in purchases:
@@ -921,6 +924,11 @@ class Purchase(
             if return_moves:
                 purchase.create_return_shipment(return_moves)
             purchase.set_shipment_state()
+
+            for line in purchase.lines:
+                line.set_actual_quantity()
+                lines.append(line)
+
             if purchase.is_done():
                 if purchase.state != 'done':
                     if purchase.state == 'confirmed':
@@ -928,6 +936,7 @@ class Purchase(
                     done.append(purchase)
             elif purchase.state != 'processing':
                 process.append(purchase)
+        Line.save(lines)
         if process:
             cls.proceed(process)
         if done:
@@ -987,6 +996,12 @@ class Line(sequence_ordered(), ModelSQL, ModelView):
             'readonly': Eval('purchase_state') != 'draft',
             },
         depends=['unit_digits', 'type', 'purchase_state'])
+    actual_quantity = fields.Float(
+        "Actual Quantity", digits=(16, Eval('unit_digits', 2)), readonly=True,
+        states={
+            'invisible': Eval('type') != 'line',
+            },
+        depends=['unit_digits', 'type'])
     unit = fields.Many2One('product.uom', 'Unit',
         ondelete='RESTRICT',
         states={
@@ -1600,6 +1615,26 @@ class Line(sequence_ordered(), ModelSQL, ModelView):
         else:
             return [l for l in self.invoice_lines if not l.stock_moves]
 
+    def set_actual_quantity(self):
+        pool = Pool()
+        Uom = pool.get('product.uom')
+        if self.type != 'line':
+            return
+        moved_quantity = 0
+        for move in self.moves:
+            if move.state != 'cancel':
+                moved_quantity += Uom.compute_qty(
+                    move.uom, move.quantity, self.unit)
+        if self.quantity < 0:
+            moved_quantity *= -1
+        invoiced_quantity = 0
+        for invoice_line in self.invoice_lines:
+            if (not invoice_line.invoice
+                    or invoice_line.invoice.state != 'cancel'):
+                invoiced_quantity += Uom.compute_qty(
+                    invoice_line.unit, invoice_line.quantity, self.unit)
+        self.actual_quantity = max(moved_quantity, invoiced_quantity, key=abs)
+
     def get_rec_name(self, name):
         pool = Pool()
         Lang = pool.get('ir.lang')

tests/scenario_purchase.rst

@@ -204,6 +204,11 @@ Invoice line must be linked to stock move::
     >>> stock_move2.invoice_lines == [invoice_line2]
     True
 
+Check actual quantity::
+
+    >>> all(l.quantity == l.actual_quantity for l in purchase.lines)
+    True
+
 Post invoice and check no new invoices::
 
     >>> invoice.invoice_date = today