odoo - How to create a field for project sale orders -

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i have fields quick access of entities related project. example:

class project(models.model):     _name = "project.project"     _description = "project"     _inherit = 'project.project'      production_order_ids = fields.one2many('mrp.production', 'project_id', 'production orders')     purchase_order_ids   = fields.one2many('purchase.order', 'project_id', 'purchase orders')     ....

i trying create sale_order_ids in project.project model. first try did not work:

sale_order_ids   = fields.one2many('sale.order', 'project_id', string='sale orders')

because because field sale.order.project_id of type account.analytic.account.

a project.project object inherits account.analytic.account. query should work ok if share same id, not. navigation be:

"project.project".analytic_account_id" -> sale.order".project_id

and result corresponding sale.order(s).

use computed field:

sale_order_ids = fields.one2many('sale.order', compute='_get_sale_orders', string='sale orders')  @api.model def _get_sale_orders(self):     record in self:         record.sale_order_ids = self.env['sale.order'].search([('project_id', '=', record.analytic_account_id.id)]).ids

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