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[David Beal <david.beal@xxxxxxxxxxxx>]

ok, good expanation Guewen

Thanks

David BEAL
OpenERP Development - Integration
+33 (0)6 67 22 86 89
+33 (0)4 82 53 84 60


2014-02-13 9:49 GMT+01:00 Guewen Baconnier <guewen.baconnier@xxxxxxxxxxxxxx>:
> Hi David,
>
>
> On 02/12/2014 09:51 PM, David Beal wrote:
>>
>> Hi connectoristas,
>>
>> I noticed the two methods for direct mapping
>>
>>          direct = [(convert('source', str), 'target')]
>>          direct = [(none('source'), 'target')]
>
>
> They are called 'modifiers' and are documented here [0].
>
> Note that you can create and use new modifiers in a particular
> implementation of a connector if you need (I used them for normalizing dates
> for instance).
>
> The modifiers (backend_to_m2o, m2o_to_backend) should also be used for all
> the relational fields (instead of the previous implicit mapping that do not
> cover all the cases). See [1] for an explanation.
>
>
>>
>> seems really interesting to avoid tedious methods in mapping.
>>
>> is there a possibility to include a another case for litteral values ?
>> like this
>>          direct = [(litteral('my_particular_value'), 'target')]
>
>
> So a default value.  My feeling is that such a static assignement is very
> likely to be decorated with @only_create: once the record is created with
> 'my_particular_value', we do no longer want to write it again and in most
> cases we must not write it again to let the user change the value manually.
> (I did a 'default()' modifier when implementing the modifiers and preferred
> not to keep it for that reason)
>
> So I'm not convinced that it is useful. Interested to have other opinions
> though.
>
>
>>
>> Thanks for your replies
>>
>> David BEAL
>> OpenERP Development - Integration
>> +33 (0)6 67 22 86 89
>> +33 (0)4 82 53 84 60
>>
>
> [0]
> http://openerp-connector.com/api/api_mapper.html#connector.unit.mapper.Mapper
> [1] https://lists.launchpad.net/openerp-connector-community/msg00046.html
>
> --
> Guewen Baconnier
> Business Solutions Software Developer
>
> Camptocamp SA
> PSE A, CH-1015 Lausanne
> Phone: +41 21 619 10 39
> Office: +41 21 619 10 10
> http://www.camptocamp.com/