from odoo import models, api, fields class X2MDemo(models.Model): _name = 'x2m.demo' name = fields.Char() line_ids = fields.One2many('x2m.demo.line', 'demo_id') @api.multi def open_x2m_matrix(self): wiz = self.env['x2m.matrix.demo.wiz'].create({}) return { 'name': 'Try x2many 2D matrix widget', 'type': 'ir.actions.act_window', 'view_type': 'form', 'view_mode': 'form', 'res_model': 'x2m.matrix.demo.wiz', 'target': 'new', 'res_id': wiz.id, 'context': self.env.context, } class X2MDemoLine(models.Model): _name = 'x2m.demo.line' name = fields.Char() demo_id = fields.Many2one('x2m.demo') user_id = fields.Many2one('res.users') value = fields.Integer()