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Many2One relationships from non-transient Model to TransientModel are forbidden

on 1/29/14, 5:35 AM 3,623 views

I am developing a custom module that adds a team of users to task. I've based my code on project.task.work model.

Here is my code for the team:

class paga_task_team(osv.Model):
    _name = 'paga_task_team'

    _columns = {
        'paga_task_id': fields.many2one('project.task', string="Task", ondelete="set null", select="1"),
        'paga_user_id': fields.many2one('res.users','User', required=True),
        'paga_booking': fields.selection(
        'paga_mail': fields.boolean('Mail?'),
        'paga_sms': fields.boolean('SMS?'),

    _default = {
        'paga_booking': 'UN',
        'paga_mail': False,
        'paga_sms': False,


And this parts extends the project.task

class paga_task_booking(osv.Model):

    _name = "project.task"
    _inherit = ["project.task", "mail.compose.message"]

    _columns = {
        'date_deadline': fields.datetime('Deadline',select=True),
        'paga_task_duration': fields.float('Duration'),
        'paga_team_size': fields.integer('Team Size'),
        'paga_team_ids': fields.one2many('paga_task_team','paga_task_id','Team', 
        states={'close':[('readonly',True)], 'cancelled':[('readonly',True)]}),


These codes only works if I make paga_task_team into a TransientModel, but then the datas are not saved permanently. If it is cvs.Model I get the error "Many2One relationships from non-transient Model to TransientModel are forbidden". I cannot see what is wrong, since this should be quite simple structure...

in both models you need to have a name field or provide something like for eg:

_rec_name ='date_deadline'

Subhin P V
on 1/29/14, 7:02 AM

I added a field called 'name' to paga_task_team -model, but it does not change the error. I assume project.task has a name field already. Also tried with _rec_name.

on 1/29/14, 7:11 AM

I hope someone will be able to help me with this - I have been banging my head into it for a month and running out of ideas. Any additional information will provided if needed!

on 1/30/14, 6:42 AM

I think that you will have to put osv.memory instead of osv.model.

Krupesh Laiya
on 1/31/14, 1:50 AM
On 1/30/14, 1:47 PM

Resolved my own problem, which was the inherited TransitionModel "mail.compose.message" apparently the model type was also inherited. Removed the mail wizard model and it works.

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Asked: 1/29/14, 5:35 AM
Seen: 3623 times
Last updated: 3/16/15, 8:10 AM