当询价单确认为采购单时，根据采购申请明细行变为采购单数量来完成采购申请

jikimo_purchase_request/models/purchase_order.py

@@ -1,4 +1,5 @@
 from odoo import api, fields, models, _
+from odoo.tools import float_compare
 
 
 class PurchaseOrder(models.Model):
@@ -38,3 +39,18 @@ class PurchaseOrder(models.Model):
             move_ids.write({'state': 'waiting', 'is_done': False})
         return res
 
+    def write(self, vals):
+        res = super(PurchaseOrder, self).write(vals)
+        if 'state' in vals and vals['state'] == 'purchase':
+            purchase_request = self.order_line.purchase_request_lines.request_id
+            if purchase_request:
+                finished = True
+                # 判断该采购申请所有明细行是否都完成
+                for purchase_request_line in purchase_request.line_ids:
+                    finished_qty = sum(purchase_request_line.purchase_lines.filtered(lambda line: line.state == 'purchase').mapped('product_qty'))
+                    if float_compare(finished_qty ,purchase_request_line.product_qty, precision_rounding=purchase_request_line.product_id.uom_id.rounding) < 0:
+                        finished = False
+                        break
+                if finished:
+                    purchase_request.button_done()
+        return res