Source code for core.orm.types.lowercase_text_type

from sqlalchemy.types import TypeDecorator, TEXT
from sqlalchemy_utils.operators import CaseInsensitiveComparator


from typing import TYPE_CHECKING
if TYPE_CHECKING:
    from sqlalchemy.engine.interfaces import Dialect


    _Base = TypeDecorator[str]

else:
    _Base = TypeDecorator




class LowercaseText(_Base):
    """ Text column that forces all text to be lowercase. """



    impl = TEXT

    # FIXME: This was spelled incorrectly, but fixing the spelling
    #        causes some issues with custom join conditions


    omparator_factory = CaseInsensitiveComparator




    def process_bind_param(
        self,
        value: str | None,
        dialect: 'Dialect'
    ) -> str | None:

        return None if value is None else value.lower()