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One2many field odoo 14

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loay elhaj

i have created one2many field in custom add-ons and link it with other model

res_id = fields.One2many('production.resources', 'resources_id', "Resources")
the field work good but when i try to add line it show a popup to create new record instead of show already created records in the other model as selection?
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Dries Cox
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Is it possible that you really need a Many2one or a Many2many instead of a One2many.
In One2many you only get records that are created especially for the parent record. like eg: invoice and invoice-lines.
If in your example one product can have more resources and one resource can be a resource for more products you need m2m.

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loay elhaj
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its works fine with many2many but i have custom float field in need to add it per line in the many2many lines is that possible and how ?