code: def modelSetFields(self, modelID, fields, ignoreUnchanged = False):
      
  
      # Form the sequence of key=value strings that will go into the
      #  request
      assignmentExpressions = ','.join(
        '%s=%%s' % (self._models.pubToDBNameDict[f],) for f in fields.iterkeys())
      assignmentValues = fields.values()
  
      query = 'UPDATE %s SET %s, update_counter = update_counter+1 ' \
              '          WHERE model_id=%%s' \
              % (self.modelsTableName, assignmentExpressions)
      sqlParams = assignmentValues + [modelID]
  
      # Get a database connection and cursor
      with ConnectionFactory.get() as conn:
        numAffectedRows = conn.cursor.execute(query, sqlParams)
        self._logger.debug("Executed: numAffectedRows=%r, query=%r, sqlParams=%r",
                           numAffectedRows, query, sqlParams)
  
      if numAffectedRows != 1 and not ignoreUnchanged:
        raise RuntimeError(
          ("Tried to change fields (%r) of model %r (conn_id=%r), but an error "
           "occurred. numAffectedRows=%r; query=%r; sqlParams=%r") % (
            fields, modelID, self._connectionID, numAffectedRows, query,
            sqlParams,))
docs: Change the values of 1 or more fields in a model. Here, 'fields' is a
      dict with the name/value pairs to change. The names are the public names of
      the fields (camelBack, not the lower_case_only form as stored in the DB).
  
      Parameters:
      ----------------------------------------------------------------
      jobID:     jobID of the job record
  
      fields:    dictionary of fields to change
  
      ignoreUnchanged: The default behavior is to throw a
      RuntimeError if no rows are affected. This could either be
      because:
        1) Because there was no matching modelID
        2) or if the data to update matched the data in the DB exactly.
  
      Set this parameter to True if you expect case 2 and wish to
      supress the error.