Group by on field of a related model.

Question

Hello, I have Odoo 8.

I need to add a "group by" button in a report. I know that the XML code is like this:

But I have a model A on where I do the group by and this model has a many2one relation with a model B. The attribute of the many2one relation is named "rel". If I need to group by over any field of model B, how can I do? If I write

<filter name="groupby_name" context="{'group_by': 'rel.name_field''}" s

subbarao · Accepted Answer

Hello Jose,
Related field field by default it will not store in the Database, so you have to pass store=True argument while declare the field on python, after that you can able to do group by.

Irfankhan Juneja · Answer

take related field:
e.g.
rel = fields,many2one('modelB')
field_use_in_filter = fields.field_type(related='rel.field_name')
and then use it in a filter

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