51 lines
1.2 KiB
Python
51 lines
1.2 KiB
Python
import sqlalchemy as sa
|
|
|
|
|
|
class CaseInsensitiveComparator(sa.Unicode.Comparator):
|
|
@classmethod
|
|
def lowercase_arg(cls, func):
|
|
def operation(self, other, **kwargs):
|
|
if other is None:
|
|
return getattr(sa.Unicode.Comparator, func)(
|
|
self, other, **kwargs
|
|
)
|
|
return getattr(sa.Unicode.Comparator, func)(
|
|
self, sa.func.lower(other), **kwargs
|
|
)
|
|
return operation
|
|
|
|
def in_(self, other):
|
|
if isinstance(other, list) or isinstance(other, tuple):
|
|
other = map(sa.func.lower, other)
|
|
return sa.Unicode.Comparator.in_(self, other)
|
|
|
|
def notin_(self, other):
|
|
if isinstance(other, list) or isinstance(other, tuple):
|
|
other = map(sa.func.lower, other)
|
|
return sa.Unicode.Comparator.notin_(self, other)
|
|
|
|
|
|
string_operator_funcs = [
|
|
'__eq__',
|
|
'__ne__',
|
|
'__lt__',
|
|
'__le__',
|
|
'__gt__',
|
|
'__ge__',
|
|
'concat',
|
|
'contains',
|
|
'ilike',
|
|
'like',
|
|
'notlike',
|
|
'notilike',
|
|
'startswith',
|
|
'endswith',
|
|
]
|
|
|
|
for func in string_operator_funcs:
|
|
setattr(
|
|
CaseInsensitiveComparator,
|
|
func,
|
|
CaseInsensitiveComparator.lowercase_arg(func)
|
|
)
|