python - How to set this specific domain on OpenERP/Odoo? -

i have next table in odoo, named relationship, comes relation between table girl , table boy:

| girl_id | boy_id | relationship_type |

| 1 | 2 | friends |

| 1 | 3 | siblings |

| 2 | 7 | lovers |

so:

• in table girl there's field relationships one2many pointing table relationship.
• in table boy there's field relationships one2many pointing table relationship.
• in table relationship there 2 fields, girl_id , boy_id, both pointing tables girl , boy respectively.

scenario:

in forms of girl , boy there's field relationships. when add new relationship girl or boy, form opened fill in fields of table relationship (girl_id, boy_id , relationship_type). imagine i'm in form of girl, click on add new relationship , form opened. implemented in order not see girl_id (it's invisible contains id of current girl). can see 2 fields (boy_id , relationship_type).

what want:

keeping on example, if open dropdown of boy_id, i'll see boys, ones related girl. example, if i'm adding relationship girl id 1, must not see boys ids 2 , 3, if girl 1 id 2, must not see boy id 7.

my attempt

i've created 2 fields in table relationships, named boys_of_the_girl (one2many related 'girl_id.relationships') , girls_of_the_boy (one2many related 'boy_id.relationships').

my code: (example: creating relationship girl)

<field name="girl_id" invisible="1"/> <field name="boys_of_the_girl" invisible="1"/> <field name="boy_id" domain="[('id', 'not in', boys_of_the_girl)]"/> <field name="relationship_type"/> 

the error:

runtimeerror: maximum recursion depth exceeded while calling python object

can me, please? thank you!

edit

table boy

relationships = fields.one2many(comodel_name='relationship',                                 inverse_name='boy_id',                                 string='relationships') 

table girl

relationships = fields.one2many(comodel_name='relationship', inverse_name='girl_id', string='relationships') 

table relationship

boy_id = fields.many2one(comodel_name='boy', string='boy', required=true) girl_id = fields.many2one(comodel_name='girl', string='girl', required=true) relationship_type = fields.char(string='relationship type') 

well, found out it's not possible manage through xml code, it's possible achieve same purpose through python:

only function (and 1 similar domain of girl_id in other form):

@api.onchange('girl_id') def on_change_girl_id(self):     current_girl_id = self.env.context.get('default_girl_id', false)     relationship_recordset = self.search([('girl_id', '=', current_girl_id)])     boy_recordset = relationship_recordset.mapped('boy_id')     boy_ids = boy_recordset.mapped('id')     boy_id_domain = [         ('id', 'not in', boy_ids)     ]     result = {         'domain': {             'boy_id': boy_id_domain,         },     }     return result 

and way it's not necessary add domain field boy_id in xml form. function affect form set relationship girl, wrote above, similar function must declared manage right behaviour when setting relationship boy.