Fixed #23423 -- Added unaccent lookup in django.contrib.postgres

    Terry Huang <terryh.tp@gmail.com>

    thebjorn <bp@datakortet.no>

    Thejaswi Puthraya <thejaswi.puthraya@gmail.com>

    Thomas Chaumeny <t.chaumeny@gmail.com>

    Thomas Güttler <hv@tbz-pariv.de>

    Thomas Kerpe <thomas@kerpe.net>

    Thomas Sorrel

from django.apps import AppConfig

from django.db.backends.signals import connection_created

from django.db.models import CharField, TextField

from django.utils.translation import ugettext_lazy as _

from .lookups import Unaccent

from .signals import register_hstore_handler

    def ready(self):

        connection_created.connect(register_hstore_handler)

        CharField.register_lookup(Unaccent)

        TextField.register_lookup(Unaccent)

from django.db.models import Transform

class Unaccent(Transform):

    bilateral = True

    lookup_name = 'unaccent'

    def as_postgresql(self, compiler, connection):

        lhs, params = compiler.compile(self.lhs)

        return "UNACCENT(%s)" % lhs, params

        # extension is installed, a subsequent data migration would use the

        # same connection

        register_hstore_handler(schema_editor.connection)

class UnaccentExtension(CreateExtension):

    def __init__(self):

        self.name = 'unaccent'

    fields

    forms

    lookups

    operations

    validators