Related two Many2one fields in the same line

many2one compute relation stock.move.line

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ERP CLOUD, Mohamad Ali Chamas

I created 2 fields inside the stock.move.line inside transfers : The first one is many2one field and I need to populate it automatically if the second customized boolean field is checked. The field I need to populate with is the product_id which is already found in the lines. Any Ideas? Here is my code:

@api.onchange('product_id')
def relate_alternatives(self):
for rec in self:
if rec.alternative_delivery_item==True:
rec.product_alternative=rec.product_id

I don't need an onchange function, I need when checking the box, I need the new many2one field to be filled automatically, at the same time I need when changing the product_id again not affect the other many2one field I created. Thanks

Mateus Vitor

You need a computed field mechanism. A computed field is a way of calculating the information dynamically. For example:


product_alternative = fields.Many2one('product.product', string='Product', compute="_computed_product_id")

The "compute" attribute execute a method from your class where calculate what you need in instance. Try this method:


@api.depends('alternative_delivery_item')
def  _computed_product_id(self):
   for rec in self:
      if rec.alternative_delivery_item == True:
         rec.product_alternative = rec.product_id

The "computed" field is calculated in execution time so it's important understand if you wish stored this data, so you'll need add a attribute called stored=True. In this case, you can be get this data from your database.

You can found more references in Cybrosys blog post about computed fields.

ERP CLOUD, Mohamad Ali Chamas

Autor

Thank you, I tried this code but I got this error when I enter a transfer: Something went wrong !
×
stock.move.line(142974,).product_alternative

Mateus Vitor

You can send a log return here to we analyse easily. Or send the user error return completely

ERP CLOUD, Mohamad Ali Chamas

Autor

That's the error: 'stock.move.line(142974,).product_alternative', None and the one I sent before

Mateus Vitor

Try remove the depends decorator

Mateus Vitor

I done a little correction in api.depends decorator. I expect this is the solution. Try this:

@api.depends('alternative_delivery_item')

ERP CLOUD, Mohamad Ali Chamas

Autor

@api.onchange('product_id')
def _computed_product_id(self):
# self.ensure_one()
for rec in self:
if rec.alternative_delivery_item == True:
rec.product_alternative = rec.product_id

That is the new update and its working fine. But I need the onchange function to execute only once. Is there any condition that can help me limit this?

Mateus Vitor

You will can create a field where be created a execution condition to method. For example:

product_alternative_processed = fields.Boolean(string='Processed Product Alternative', deafult=False)

Every time you run this method check if the field has been calculated. Otherwise, you will edit the field.

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