Guewen Baconnier
9c3c022ffe
When using a many2one widget, in the following scenario:
<h2><span t-field="o.partner_id.parent_id.country_id"/></h2>
If 'parent_id' is an empty recordset, the following error will be
raised:
[...]
[read] = record.read([field_name])
ValueError: need more than 0 values to unpack
This is because record.read([field_name]) returns an empty list which
cannot be unpacked.
In version 10 this problem is avoided by using recordset but to keep the diff
minmal in v9, only returns empty string as the line below does
`if not read[field_name]: return ''`
Closes #14489
Odoo
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