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Umashankar Subramani

I am just curious to know whether is it possible to limit number of items to be selected in many2many fields?..... Please anyone give me some suggestion......Thanks in advance.....

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Vasanth
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Hi Umashankar,

you can not limit the many2many field directly.The way you can limit that make your many2many field as many2one and make it as many2many using widget="many2many" and you can set the limit.for example

<group>

<field name="partner_id"  options="{'limit': 10, 'create': false, 'create_edit': false}" widget="many2many">

<tree>

<field name="your_field1"/>

<field name="your_field2"/>

</tree>

</field>

</group>

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Ankit H Gandhi(AHG)
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Hello Umashankar,

I think this code very helpful for you and this code is fully dynamic.

Here i give one simple example.

in .py file

'limit':fields.integer('Limit'),

'field_ids': fields.many2many('other.object.name', 'relation object', 'actual.object.id', 'other.object.id', string='Name'),

def _check_limit(self, cr, uid, ids, context=None):
        new_list = []
        for obj in self.browse(cr, uid, ids, context=context):
            if obj.limit <= 0:
                return False
            for field in obj.field_ids:
                new_list.append(field.id)
            if obj.limit <  len(new_list):
                return False
        return True
  
    _constraints = [
        (_check_limit, 'Please check your limit !', ['limit','field_ids']),
    ]

if you find this answer helpful, please give me a thumbs up vote    

Thanks & Regards,

Ankit H Gandhi

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