unknown parameter 'ondelete'

Question

im using ondelete parameter in several fields but somehow im getting this warning
WARNING prestaterreihza odoo.fields: Field certification.agreement.agreement_ids: unknown parameter 'ondelete', if this is an actual parameter you may want to override the method _valid_field_parameter on the relevant model in order to allow it
this is one of my warning field
agreement_ids = fields.One2many('certification.agreement.line', 'agreement_id', string='Agreement Line', ondelete='cascade')
is there any req

Dương Nguyễn · Accepted Answer

ondelete normally use for m2o and selection field, not o2m field. If you get warning for m2o field please check if your many2one field is store or not

Bhushan vagh · Answer

no you can use this to only in m20 example agreement_id in this field

Muhammad Ihza Putra Handayani · Answer

for addition, i also have a many2one field that has ondelete parameter and it also gives a warning message

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