How to check if exist the same Product in the line ( Field One2many)??

Question

I have a function create stock picking named : action_picking_create()
My code :
if len(self.line_ids) == 0:
raise exceptions.Warning(_('No line'))
for line in self.line_ids :
if line.quantity > 0
self.action_picking_create()
else :
raise exceptions.Warning(_('Quantity must be > 0'))
I want to test if I have the same product I want to raise an exception.
I try with
for todo_line in self.line_id
for line in self.line_ids :
if todo_line.product_id.id != line.product_id.id
if line.quantity > 0
self

Sudhir Arya (ERP Harbor Consulting Services) · Accepted Answer

Hi Achref,
You can use *search* method to search the product in the line.
*Ex:*
my_line_obj = self.pool.get('my.line') # object of your line_ids field
for line in self.line_id:
my_line_ids = my_line_obj.search(cr, uid, [('parent_id', '=', line.parent_id), ('product_id', '=', line.product_id.id)], context=context)
# do something with my_line_ids
Here, *parent_id* is a many2one field in the line of parent object (ex: order_id of sale.order relation in sale.order.line)
Hope this will help you.

Akhil P Sivan · Answer

Hi,
You may try like this:
err_products = []
for line in self.line_ids :
if line.product_id.id not in err_products:
if line.quantity > 0
self.action_picking_create()
else :
raise exceptions.Warning(_('Quantity must be > 0'))
err_products.append(line.product_id.id)
else:
raise exceptions.Warning(_('Product Exist'))

Achraf Mhadhbi · Answer

Many Thanks to Akhil.
product_id = False product_ids =[]
for line in self.line_ids :
product_id=line.product_id.id
if not ( product_id in product_ids) :
product_ids.append(product_id)
if line.quantity>0 :
self.action_picking_create()
else :
raise exceptions.Warning( _('Quantity must be > 0'))
else : raise exceptions.Warning( _('Product Exit' ))

Ankit H Gandhi(AHG) · Answer

Dear,
To check exist the same Product in the line level.
from odoo import models, fields, api
from odoo.exceptions import ValidationError

class PurchaseOrder(models.Model):
_inherit = "purchase.order"
@api.multi
@api.constrains('order_line')
def _check_exist_product_in_line(self):
for purchase in self:
exist_product_list = []
for line in purchase.order_line:
if line.product_id.id in exist_product_list:
raise ValidationError(_('Product should be one per line.'))
exist_product_list.append(line.pr

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