63 lines
2.7 KiB
Python
63 lines
2.7 KiB
Python
# -*- coding: utf-8 -*-
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from flectra import models, fields, api, _
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from flectra.exceptions import UserError
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class IrModelFields(models.Model):
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_inherit = 'ir.model.fields'
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ttype = fields.Selection(selection_add=[('serialized', 'serialized')])
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serialization_field_id = fields.Many2one('ir.model.fields', string='Serialization Field',
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ondelete='cascade', domain="[('ttype','=','serialized')]",
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help="If set, this field will be stored in the sparse structure of the "
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"serialization field, instead of having its own database column. "
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"This cannot be changed after creation.",
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)
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@api.multi
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def write(self, vals):
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# Limitation: renaming a sparse field or changing the storing system is
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# currently not allowed
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if 'serialization_field_id' in vals or 'name' in vals:
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for field in self:
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if 'serialization_field_id' in vals and field.serialization_field_id.id != vals['serialization_field_id']:
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raise UserError(_('Changing the storing system for field "%s" is not allowed.') % field.name)
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if field.serialization_field_id and (field.name != vals['name']):
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raise UserError(_('Renaming sparse field "%s" is not allowed') % field.name)
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return super(IrModelFields, self).write(vals)
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def _reflect_field_params(self, field):
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params = super(IrModelFields, self)._reflect_field_params(field)
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params['serialization_field_id'] = None
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if getattr(field, 'sparse', None):
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model = self.env[field.model_name]
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serialization_field = model._fields.get(field.sparse)
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if serialization_field is None:
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raise UserError(_("Serialization field `%s` not found for sparse field `%s`!") % (field.sparse, field.name))
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serialization_record = self._reflect_field(serialization_field)
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params['serialization_field_id'] = serialization_record.id
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return params
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def _instanciate_attrs(self, field_data):
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attrs = super(IrModelFields, self)._instanciate_attrs(field_data)
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if field_data.get('serialization_field_id'):
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serialization_record = self.browse(field_data['serialization_field_id'])
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attrs['sparse'] = serialization_record.name
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return attrs
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class TestSparse(models.TransientModel):
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_name = 'sparse_fields.test'
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data = fields.Serialized()
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boolean = fields.Boolean(sparse='data')
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integer = fields.Integer(sparse='data')
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float = fields.Float(sparse='data')
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char = fields.Char(sparse='data')
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selection = fields.Selection([('one', 'One'), ('two', 'Two')], sparse='data')
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partner = fields.Many2one('res.partner', sparse='data')
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