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datamany2oneone2manybacktrackingrelationship
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Marco Dieckhoff

Hi!

Let's say have two models, for persons and addresses, where the addresses always belong to a person, and a person may choose one of them as main address.

class person(osv.osv):
    _name = "my.persons"
    _columns = {
         "name": fields.char("Name", size=64, required=True),
         "address_id": fields.many2one("my.addresses" string="Main Address"),
         "addresses_ids": fields.one2many("my.addresses", "person_id", string="All addresses"),
    }

class adress(osv.osv):
    _name = "my.addresses"
    _columns = {
    "name": fields.char("name", size=75),
        "person_id": fields.many2one("my.persons", "Person", required=True),
    }

Now, how do I enter data for this (as demo data / pre-supplied data) to an addon?

Exporting via base module recorder uses some searches like

<field model="my.addresses" name="address_id" search="[('name', '=', 'something')]"/>

and some ref fields like

<field name="address_id" ref="my_addresses_5"/>

The later are even used when they are NOT previously defined in the export of base module recorder, but only afterwards...

It all ends with a long traceback pastebin eXmk93ST (not allowed to post links) and

 File "/home/openerp/openerp/addons/base/ir/ir_model.py", line 647, in _get_id
    raise ValueError('No such external ID currently defined in the system: %s.%s' % (module, xml_id))
ValueError: No such external ID currently defined in the system: my.addresses_something

I tried all this on v6.1 (as I have need of the GTK client and can't upgrade to 7 therefore).

So, how is it done properly?

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eLBati
Best Answer

You should be able to do that by creating and updating records in the following way:

    <record model="my.persons" id="my_first_person">
      <field name="name">First person</field>
    </record>

    <record model="my.addresses" id="my_first_address">
      <field name="name">First address</field>
      <field name="person_id" ref="my_first_person"></field>
    </record>

    <record model="my.addresses" id="my_second_address">
      <field name="name">Second address</field>
      <field name="person_id" ref="my_first_person"></field>
    </record>

    <record model="my.persons" id="my_first_person">
      <field name="address_id" ref="my_first_address"></field>
    </record>
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Marco Dieckhoff
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Thank you, works well!