Hello. I have a wizard (transient model) that I fire from sale order. On creation, the wizard copies some values from every sale order line and saves them in a many2many field.

So the wizard is fired with the many2many values as default. Then, after the user fills some other values in the wizard, it fires a method in the sale order line, which creates a new project.project. In the project creation function, this error is produced:

Missing Record
Record does not exist or has been deleted.
(Record: project.task(91,), User: 2)

There is no error if I don't fill the many2many field with anything, or if I don't create a new project. Can anybody help?



Code:
#wizard
class ShMessageWizard(models.TransientModel):
    _name = "sh.task.wizard"
    _description = "Wizard To Ask Create Or Edit"
   
    new_project = fields.Boolean("Create New Project")
    task_ids = fields.Many2many('sale.order.line.task', string="Tasks")
   
   
    def task_selection_type(self):

parent_id = self.env.context.get("active_id")
        parent_model = self.env.context.get("active_model")
        parent_record = self.env[parent_model].browse(parent_id)

        if self.new_project:
            parent_record.write({'project':self\.project_id\.id\}\)
 \  \  \  \  \  \ parent_record\.write\(\{'proj_user_id':self\.proj_user_id\.id\}\)
 \  \  \  \  \  \ parent_record\.write\(\{'project_name':self\.project_name\}\)
 \  \  \  \  \  
 \  \  \  
 \  \  \  \ parent_record\.action_create_task\(\)


\#sale\ order\ extend
class\ SaleOrder\(models\.Model\):
 \  \ _inherit\ =\ "sale\.order"

 \  \ create_new\ =\ fields\.Boolean\("Create\ New"\)

 \  \ def\ action_create\(self\):
 \  \  \  
 \  \  \  \  \  
 \  \  \  \ tasks\ =\ \[\]
 \  \  \  \ for\ line\ in\ self\.order_line:
 \  \  \  \  \  \ for\ task_line\ in\ line\.task_lines:
 \  \  \  \  \  \  \  \ tasks\.append\(task_line\.id\)
 \  \  \  
 \  \  \  \ return\ \{
 \  \  \  \  \  \ 'name':'Create\ Task',
 \  \  \  \  \  \ 'res_model':\ 'sh\.task\.wizard',
 \  \  \  \  \  \ 'view_mode':'form',
 \  \  \  \  \  \ 'context':\ \{
 \  \  \  \  \  \  \  \ 'default_task_ids':\ \[\(6,0,tasks\)\]
 \  \  \  \  \  \ \},
 \  \  \  \  \  \ 'view_id':self\.env\.ref\('sh_so_task\.sh_task_wizard'\)\.id,
 \  \  \  \  \  \ 'target':'new',
 \  \  \  \  \  \ 'type':'ir\.actions\.act_window'
 \  \  \  \ \}
 \  \  \  \  \  \  \  
 \  \ \#\ Task\ Button\ to\ create\ project
 \  \ def\ action_create_task\(self\):
 \  \  \  \ if\ self:
 \  \  \  \  \  \ for\ data\ in\ self:
 \  \  \  \  \  \  \  \ \#\ project_obj\ =\ \[\]

 \  \  \  \  \  \  \  \ if\ data\.create_new:
 \  \  \  \  \  \  \  \  \  \ \#\ Create\ Project
 \  \  \  \  \  \  \  \  \  \ vals\ =\ \{\}
 \  \  \  \  \  \  \  \  \  \ vals\.update\(\{"name":\ data\.project_name\}\)

 \  \  \  \  \  \  \  \  \  \ project_obj\ =\ self\.env\["project\.project"\]\.create\(vals\)
 \  \  \  \  \  \  \  \  \  \ data\.project\ = project_obj.id