'Represent a single Row
@param row: the supply_item Row'

def represent_row(self, row):

    name = row['supply_item.name']
    model = row['supply_item.model']
    brand = row['supply_brand.name']
    fields = []
    if name:
        fields.append(name)
    if model:
        fields.append(model)
    if brand:
        fields.append(brand)
    name = '    -    '.join(fields)
    if self.show_um:
        um = row['supply_item.um']
        if um:
            name = ('%s    (%s)' % (name, um))
    return s3_str(name)
