Odoo 10 Error - I need to send one2many values to another model has the same one2many field - odoo-10

Question

I am receiving an Odoo 10 error.
I need to send one2many values to another model that has the same one2many field.
When I send the one2many field using my workflow, I had this error expected singleton, (1,4,6).
How can I solve this problem?
file_upload_material = fields.One2many('file.decision','param_two')
#api.multi
def confirm(self):
file = self.file_upload_material.file
name = self.file_upload_material.name
if self.name:
media_and_media = {
'name': self.name,
'instructions': self.instructions,
'task_id': self.task_id.id,
'descriptions': self.descriptions,
'date_from_exec': self.date_from_exec,
'date_to_exec': self.date_to_exec,
'date_from': self.date_from,
'task_name': self.task_name,
'file_upload_material': [(0, 0, {
'name': name,
'file': file
})],
}
self.env['my.task.log'].create(media_and_media)
self.state = 'unread'
class LogMydecision(models.Model):
_name = "my.task.log"
file_upload_material = fields.One2many('file.decision','param_one')
class FileUpload(models.Model):
_name = 'file.decision'
name = fields.Char('File Name')
file = fields.Binary('Upload File')
param_one = fields.Many2one('my.task.log)
param_two = fields.Many2one('task.log)

Answer 1

Your error seems related to the value of the field file_upload_material that contains a recordset and you are using it as like if there contains only one record(like m2o), specifically on this lines:
file = self.file_upload_material.file
name = self.file_upload_material.name
Your issue could be solved like this:
media_and_media = {
'name': self.name,
'instructions': self.instructions,
'task_id': self.task_id.id,
'descriptions': self.descriptions,
'date_from_exec': self.date_from_exec,
'date_to_exec': self.date_to_exec,
'date_from': self.date_from,
'task_name': self.task_name,
'file_upload_material': [(0, 0, {
'name': fum.name,
'file': fum.file
}) for fum in self.file_upload_material],
}
Also seems that you are duplicating the value of the file.decision records by copying at the confirm method, you could change the field to a m2m and reuse it or also you could write the relation between the existing record with (4, id) or (6,0,[ids]) instead of using (0,0,{vals}), like this:
media_and_media = {
'name': self.name,
'instructions': self.instructions,
'task_id': self.task_id.id,
'descriptions': self.descriptions,
'date_from_exec': self.date_from_exec,
'date_to_exec': self.date_to_exec,
'date_from': self.date_from,
'task_name': self.task_name,
'file_upload_material': [(6, 0, self.file_upload_material.ids)],
}
That prevent the record duplication. Also I will recommends you to switch to m2m fields for file_upload_material relations