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How to use @api.onchange in models.AbstractModel, when the interiting class field name are different.

by
Ecosoft Co. Ltd., Kitti Upariphutthiphong
- 27/09/2019 13:29:40
Dear all,

I have one technical challenge while doing this PR -> https://github.com/OCA/account-analytic/pull/251

In the origin module, there was abstract class,

class AnalyticDimensionLine(models.AbstractModel):
    _name = 'analytic.dimension.line'

Which are inherited by other model, i.e., account.move.line, account.invoice.line, etc.

class AccountInvoiceLine(models.Model):
    _name = 'account.invoice.line'
    _inherit = ['analytic.dimension.line', 'account.invoice.line']
    _analytic_tag_field_name = 'analytic_tag_ids'

Now, I wanted to add api.onchange method on a field which can be varied by each inheriting model via _analytic_tag_field_name

Question is, I would want to do the onchange on the base abstract class, analytic.dimension.line like this, but it doesn't work.

class AnalyticDimensionLine(models.AbstractModel):
    _inherit = 'analytic.dimension.line'

    @api.onchange(lambda self: self._analytic_tag_field_name)      ---------------------> THIS NOT WORK
    def _onchange_analytic_tag_ids(self):

And so, I end up having to add @api.onchange in inheriting models. Which I think not very good.

class AccountInvoiceLine(models.Model):
    _inherit = 'account.invoice.line'

    @api.onchange('analytic_tag_ids')  ----------------------> NOT GOOD
    def _onchange_analytic_tag_ids(self):


Any thought are appreciated,
Than you,



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