odoo 为双字段添加验证

Question

我有这个 odoo py

class CrmProject(models.Model):
_name='crm.project'
customer_id = fields.Many2one('res.partner','Customer')
project_product_id = fields.Many2one('crm.project.product','Project Product')

当customer_id和project_product_id输入的值与crm.project数据库中的值相同时，如何验证并显示警告？因此必须首先检查数据库，然后如果它与 customer_id AND project_product_id 输入中的值相同，则显示警告。
例如：

Database table crm.project
customer_id = 1
project_product_id = 2

仅当输入时才会创建警告：

customer_id = 1
project_product_id = 2

除此之外不会创建任何警告

我试过了但没有创建警告（更新 25-04-2021）

@api.model
def create(self,vals):
    vals['name'] = self.env['ir.sequence'].next_by_code('crm.project')
    res = super(CrmProject,self).create(vals)
    # Add code here
    #res= super(CrmProject,self).create(vals)
    customer_id = vals.get('crm.project.customer_id')
    project_product_id = vals.get('crm.project.project_product_id')
    get_customer_id = self.env['crm.project'].search([('customer_id','=',customer_id)])
    get_project_product_id = self.env['crm.project'].search([('project_product_id','=',project_product_id)])
    if get_customer_id and get_project_product_id:
        raise UserError(_('The project has already been set before'))
    else:
        return res

如有帮助将不胜感激

Answer 1

您可以在数据库中创建约束：

create unique index name_your_constraint
on crm_project (customer_id, project_product_id);

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