Field of type Reference in Odoo, how to use it ?

Reference field type in Odoo

The main use of this field type is to make a reference with a specific model and then a specific recordset of this model.

By using the reference field type, the first thing you will choose is the model:

field reference

And by choosing the model you will be asked the choose one of the recordset of the chosen Model

field reference recordset

Structure of the reference field in Odoo (New API)

A field of type reference is declared as below :

ref = fields.Reference(string='Reference', selection='_get_document_types')

Selection attribute : We define the method that will determine which models will be showed, and from which we can choose

In our example we used this method :

method selection field reference

@api.model
    def _get_document_types(self):
        records = self.env['ir.model'].search(['|', ('model', '=', 'sale.order'), '|', ('model', '=', 'account.invoice'), '|', ('model', '=', 'stock.picking'), ('model', '=', 'purchase.order')])
        return [(record.model, record.name) for record in records] + [('', '')]

In this example, we specified that we want to choose from [ Sale Order, Account Invoice, Stock Picking, Purchase Order ] models

Hope it was useful for you
Good luck !!