How can I change the value of a selection field on create function?

Question

I wanna change the value of status once I click save. status is a selection field [('ok', 'Ok'),('tobe', 'Not Ok')]

    status = fields.Selection(
        readonly=False,
        default='tobe',
        related= 'name.status'      
    )

    @api.model
    def create(self, values):
        self.status= 'ok'
        line = super(MyClass, self).create(values)
        return line       

Answer 1

Status is a related field so after creating change the status of you many2one field.

  @api.model
  def create(self, values):
         rec = super(YouClassName, self).create(values)
         # here change the status. 
         rec.name.status = 'ok'
         return rec

Answer 2

The error is in your selection field declaration. It should be like this:

status = fields.Selection([('ok', "OK"),('not ok', "Not OK"),],default='tobe')

@api.multi
def write(self, vals):
    vals['status'] = 'ok'
    ret = super(Your-Class-Name-here, self).write(vals)

By default, readonly on every field is false, so no need specifying it inside the selection field.

Please, notify me if this solve your challenge. Thanks