1 from django.db.models.sql import compiler

     2 

     3 class SQLCompiler(compiler.SQLCompiler):

     4     def resolve_columns(self, row, fields=()):

     5         values = []

     6         index_extra_select = len(self.query.extra_select.keys())

     7         for value, field in map(None, row[index_extra_select:], fields):

     8             if (field and field.get_internal_type() in ("BooleanField", "NullBooleanField") and

     9                 value in (0, 1)):

    10                 value = bool(value)

    11             values.append(value)

    12         return row[:index_extra_select] + tuple(values)

    13 

    14 class SQLInsertCompiler(compiler.SQLInsertCompiler, SQLCompiler):

    15     pass

    16 

    17 class SQLDeleteCompiler(compiler.SQLDeleteCompiler, SQLCompiler):

    18     pass

    19 

    20 class SQLUpdateCompiler(compiler.SQLUpdateCompiler, SQLCompiler):

    21     pass

    22 

    23 class SQLAggregateCompiler(compiler.SQLAggregateCompiler, SQLCompiler):

    24     pass

    25 

    26 class SQLDateCompiler(compiler.SQLDateCompiler, SQLCompiler):

    27     pass