Class Columns

django/db/backends/ddl_references.py:89–110

Hold a reference to one or many columns.

class Columns(TableColumns):
    """Hold a reference to one or many columns."""

    def __init__(self, table, columns, quote_name, col_suffixes=()):
        self.quote_name = quote_name
        self.col_suffixes = col_suffixes
        super().__init__(table, columns)

    def __str__(self):
        def col_str(column, idx):
            col = self.quote_name(column)
            try:
                suffix = self.col_suffixes[idx]
                if suffix:
                    col = "{} {}".format(col, suffix)
            except IndexError:
                pass
            return col

        return ", ".join(
            col_str(column, idx) for idx, column in enumerate(self.columns)
        )


class IndexName(TableColumns):