old_contents: from datetime import datetime
  from har import db
  
  
  class Log(db.Model):
      id = db.Column(db.Integer, primary_key=True)
      subject_id = db.Column(db.Integer, db.ForeignKey('subject.device'))
      log_type = db.Column(db.String(40))
      activity = db.Column(db.String(40))
      sensor_placement = db.Column(db.String(40))
      number_of_sensor = db.Column(db.Integer)
      total_sensor_axis = db.Column(db.Integer)
      number_of_entry = db.Column(db.Integer)
      path = db.Column(db.String(250))
      timestamp = db.Column(db.DateTime)
  
      def __init__(self, subject_id, log_type, activity, sensor_placement, number_of_sensor,
                   total_sensor_axis, number_of_entry, path):
          self.subject_id = subject_id
          self.log_type = log_type
          self.activity = activity
          self.sensor_placement = sensor_placement
          self.number_of_sensor = number_of_sensor
          self.total_sensor_axis = total_sensor_axis
          self.number_of_entry = number_of_entry
          self.path = path
          self.timestamp = datetime.now()
  
      def __repr__(self):
          return '<%s log from subject %i>' % self.log_type, self.subject
  
new_contents: from datetime import datetime
  from har import db
  
  
  
  class Log(db.Model):
      STATUS_PENDING = "pending"
      STATUS_PENDING = "trained"
  
      id = db.Column(db.Integer, primary_key=True)
      subject_id = db.Column(db.Integer, db.ForeignKey('subject.device'))
      log_type = db.Column(db.String(40))
      activity = db.Column(db.String(40))
      sensor_placement = db.Column(db.String(40))
      number_of_sensor = db.Column(db.Integer)
      total_sensor_axis = db.Column(db.Integer)
      number_of_entry = db.Column(db.Integer)
      path = db.Column(db.String(250))
      status = db.Column(db.String(40))
      timestamp = db.Column(db.DateTime)
  
      def __init__(self, subject_id, log_type, activity, sensor_placement, number_of_sensor,
                   total_sensor_axis, number_of_entry, path):
          self.subject_id = subject_id
          self.log_type = log_type
          self.activity = activity
          self.sensor_placement = sensor_placement
          self.number_of_sensor = number_of_sensor
          self.total_sensor_axis = total_sensor_axis
          self.number_of_entry = number_of_entry
          self.path = path
          self.status = Log.STATUS_PENDING
          self.timestamp = datetime.now()
  
      def __repr__(self):
          return '<%s log from subject %i>' % self.log_type, self.subject
  
subject: Add status column to Log model