40 lines
844 B
Python
40 lines
844 B
Python
from django.db.models import Func, Value
|
|
|
|
|
|
class Unaccent(Func):
|
|
function = 'immutable_unaccent'
|
|
arity = 1
|
|
|
|
|
|
class Normalize(Func):
|
|
function = 'immutable_normalize'
|
|
arity = 1
|
|
|
|
|
|
class Lower(Func):
|
|
function = 'LOWER'
|
|
arity = 1
|
|
|
|
|
|
class JSONRef(Func):
|
|
function = ''
|
|
arg_joiner = '->'
|
|
|
|
def __init__(self, *expressions, **extra):
|
|
jsonb = expressions[0]
|
|
refs = map(Value, expressions[1:])
|
|
super(JSONRef, self).__init__(jsonb, *refs, **extra)
|
|
|
|
|
|
class JSONTextRef(Func):
|
|
function = ''
|
|
arg_joiner = '->>'
|
|
arity = 2
|
|
|
|
def __init__(self, *expressions, **extra):
|
|
jsonb = expressions[0]
|
|
if len(expressions) > 2:
|
|
jsonb = JSONRef(jsonb, *expressions[1:-1])
|
|
ref = Value(expressions[-1])
|
|
super(JSONTextRef, self).__init__(jsonb, ref, **extra)
|