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# Copyright 2019 Eficent Business and IT Consulting Services S.L.
# License LGPL-3.0 or later (http://www.gnu.org/licenses/lgpl.html).
from odoo import _, api, fields, models
from odoo.exceptions import UserError
class IrModel(models.Model):
_inherit = 'ir.model'
is_kanban = fields.Boolean(
string="Kanban", default=False,
help="Whether this model support kanban stages.",
)
@api.multi
def write(self, vals):
if self and 'is_kanban' in vals:
if not all(rec.state == 'manual' for rec in self):
raise UserError(_('Only custom models can be modified.'))
if not all(rec.is_kanban <= vals['is_kanban'] for rec in self):
raise UserError(
_('Field "Kanban" cannot be changed to "False".'))
res = super(IrModel, self).write(vals)
# setup models; this reloads custom models in registry
self.pool.setup_models(self._cr)
# update database schema of models
models = self.pool.descendants(self.mapped('model'), '_inherits')
self.pool.init_models(self._cr, models, dict(
self._context, update_custom_fields=True))
else:
res = super(IrModel, self).write(vals)
return res
def _reflect_model_params(self, model):
vals = super(IrModel, self)._reflect_model_params(model)
vals['is_kanban'] = issubclass(
type(model), self.pool['base.kanban.abstract'])
return vals
@api.model
def _instanciate(self, model_data):
model_class = super(IrModel, self)._instanciate(model_data)
if model_data.get('is_kanban') and \
model_class._name != 'base.kanban.abstract':
parents = model_class._inherit or []
parents = [parents] if isinstance(parents, (str,)) else parents
model_class._inherit = parents + ['base.kanban.abstract']
return model_class