# MySQL Connector/Python - MySQL driver written in Python.
import django
from django.db.models.sql import compiler
try:
from itertools import zip_longest as zip_longest
except:
from itertools import izip_longest as zip_longest
# from django.utils.six.moves import zip_longest
class SQLCompiler(compiler.SQLCompiler):
def resolve_columns(self, row, fields=()):
values = []
index_extra_select = len(self.query.extra_select)
bool_fields = ("BooleanField", "NullBooleanField")
for value, field in zip_longest(row[index_extra_select:], fields):
if (field and field.get_internal_type() in bool_fields and
value in (0, 1)):
value = bool(value)
values.append(value)
return row[:index_extra_select] + tuple(values)
if django.VERSION >= (1, 8):
def as_subquery_condition(self, alias, columns, compiler):
qn = compiler.quote_name_unless_alias
qn2 = self.connection.ops.quote_name
sql, params = self.as_sql()
return '(%s) IN (%s)' % (', '.join('%s.%s' % (qn(alias), qn2(column)) for column in columns), sql), params
else:
def as_subquery_condition(self, alias, columns, qn):
# Django 1.6
qn2 = self.connection.ops.quote_name
sql, params = self.as_sql()
column_list = ', '.join(
['%s.%s' % (qn(alias), qn2(column)) for column in columns])
return '({0}) IN ({1})'.format(column_list, sql), params
class SQLInsertCompiler(compiler.SQLInsertCompiler, SQLCompiler):
pass
class SQLDeleteCompiler(compiler.SQLDeleteCompiler, SQLCompiler):
pass
class SQLUpdateCompiler(compiler.SQLUpdateCompiler, SQLCompiler):
pass
class SQLAggregateCompiler(compiler.SQLAggregateCompiler, SQLCompiler):
pass
if django.VERSION < (1, 8):
class SQLDateCompiler(compiler.SQLDateCompiler, SQLCompiler):
pass
if django.VERSION >= (1, 6):
class SQLDateTimeCompiler(compiler.SQLDateTimeCompiler, SQLCompiler):
# Django 1.6
pass
