Hi,

I am working on create new Sale Order. 

When user selects a Customer, I would like to check the expiration date of Credit Limit of the selected customer.

If it invalid, display a warning popup with 2 buttons [Go to customer page|Cancel]

If user select 'Cancel', the pop up will close and user can do their job as usual.

Here is my source code

class CreditLimitWizard(models.TransientModel):
    _name = 'sale.credit.limit.wizard'
    _description = 'Sale Credit Limit Wizard'

    name = fields.Char('Customer Name')
    credit_limit = fields.Float('Credit Limit')
    expire_date = fields.Date('Expire Date')

<record model="ir.ui.view" id="sale_credit_limit_wizard">
    <field name="name">Customer Credit Limit Wizard</field>
    <field name="model">sale.credit.limit.wizard</field>
    <field name="type">form</field>
    <field name="arch" type="xml">
        <form>
            <group>
                <span>The following customer is about or expired their credit limit:
                </span>
            </group>
            <group>
                <field name="name"/>
                <field name="credit_limit" widget="monetary"/>
                <field name="expire_date"/>
            </group>
            <footer>
                <button string="Cancel" special="cancel" class="oe_highlight"/>
                <!--<button name="go_customer" string="Go to customer page" type="object"-->
                        <!--class="oe_highlight"/>-->
            </footer>
        </form>
    </field>
</record>

class SaleOrder(models.Model):
    _inherit = 'sale.order'

    @api.onchange('partner_id')
    def _check_credit_limit_expired(self):
        for order in self:
            if order.partner_id and order.partner_id.credit_limit_expired:
                expire_date = order.partner_id.credit_limit_expired
                # Check expire date
                if expire_date < fields.Date.today() + datetime.timedelta(days=-7):
                    view = self.env.ref('soj_credit.sale_credit_limit_wizard')
                    wiz = self.env['sale.credit.limit.wizard'].create({
                        'name': order.partner_id.name,
                        'credit_limit': order.partner_id.credit_limit,
                        'expire_date': expire_date.strftime('%Y-%m-%d'),
                    })
                    return {
                        'type': 'ir.actions.act_window',
                        'name': 'Warning : Customer is about or expired their credit limit',
                        'res_model': 'sale.credit.limit.wizard',
                        'view_type': 'form',
                        'view_mode': 'form',
                        'views': [(view.id, 'form')],
                        'view_id': view.id,
                        'res_id': wiz.id,
                        'target': 'new',
                    }

This code can check the expire date logic but it shows nothing on my browser.

Thank you for your help!