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Hi, i am a newbie in odoo programming. I got this warning when creating  a One2many field relation, where I took the data from the Many2one field in the same model. 

Here is my custom code:

class ReferInherit(models.Model):
_inherit = 'qc.inspection'

reference_line = fields.One2many('qc.inspection', 'picking', readonly=False, store=True)

and I took the data from here:

class QcInspection(models.Model):
_inherit = 'qc.inspection'

@api.multi
@api.depends('object_id')
def _compute_picking(self):
for inspection in self:
inspection.picking = False
if inspection.object_id:
if inspection.object_id._name == 'stock.move':
inspection.picking = inspection.object_id.picking_id
elif inspection.object_id._name == 'stock.picking':
inspection.picking = inspection.object_id
elif inspection.object_id._name == 'stock.pack.operation':
inspection.picking = inspection.object_id.picking_id
    picking = fields.Many2one(comodel_name="stock.picking", compute="_compute_picking", store=True)

When I run it, I got this Warning:

The operation cannot be completed: another model requires the record being deleted. If possible, archive it instead.
Model: Quality control inspection (qc.inspection), Constraint: qc_inspection_picking_fkey

what's wrong with my code? and how to solve it? Sorry for my bad english and Thanks before.


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작성자

Hi, Kanakinfosystems

Thanks for your answer.

This is very helpful. Your answer is so inspiring for me. Thanks a lot:)

베스트 답변

Hi Ahmad,

Please see below code example for correct implementation of One2many relational field.

class QcInspection(models.Model):
    _name = 'qc.inspection'

    line_ids = fields.One2many(comodel_name='qc.inspection.line', inverse_name='inspection_id', string='Lines')

class QcInspectionLine(models.Model):
   _name = 'qc.inspection.line'

   inspection_id = fields.Many2one('comodel_name='qc.inspection', string="Inspection", ondelet="cascade")

Note:  Inverse field should not be computed, as per your code you are trying to compute value of picking fields.

Thanks.


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