[IMP] add currency_id to view currency after-field

models/crm_lead.py

@@ -4,4 +4,5 @@ from odoo import fields, models
 class CrmLead(models.Model):
     _inherit = "crm.lead"
 
-    cost_price = fields.Integer(string="Cost Price", default=0)
+    cost_price = fields.Monetary(string="Cost Price", default=0)
+    currency_id = fields.Many2one(related="company_id.currency_id", string="Currency", readonly=True)

views/crm_lead.xml

@@ -9,6 +9,7 @@
         <field name="arch" type="xml">
             <xpath expr="//field[@name='date_deadline']" position="after">
                 <field name="cost_price"/>
+                <field name="currency_id" invisible="1"/>
             </xpath>
         </field>
     </record>