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ðŸ“ ..
ðŸ“„ __init__.py(0 B)
ðŸ“ __pycache__
ðŸ“„ apsw_ext.py(4.82 KB)
ðŸ“„ cockroachdb.py(9 KB)
ðŸ“„ dataset.py(14.09 KB)
ðŸ“„ db_url.py(4.15 KB)
ðŸ“„ fields.py(1.66 KB)
ðŸ“„ flask_utils.py(8 KB)
ðŸ“„ hybrid.py(1.49 KB)
ðŸ“„ kv.py(5.48 KB)
ðŸ“„ migrate.py(30.11 KB)
ðŸ“„ mysql_ext.py(3.17 KB)
ðŸ“„ pool.py(11.21 KB)
ðŸ“„ postgres_ext.py(14.41 KB)
ðŸ“„ psycopg3_ext.py(1.15 KB)
ðŸ“„ reflection.py(30.2 KB)
ðŸ“„ shortcuts.py(11.25 KB)
ðŸ“„ signals.py(2.46 KB)
ðŸ“„ sqlcipher_ext.py(3.55 KB)
ðŸ“„ sqlite_changelog.py(4.68 KB)
ðŸ“„ sqlite_ext.py(45.65 KB)
ðŸ“„ sqlite_udf.py(13.34 KB)
ðŸ“„ sqliteq.py(9.75 KB)
ðŸ“„ test_utils.py(1.81 KB)

Editing: signals.py

"""
Provide django-style hooks for model events.
"""
from peewee import Model as _Model

class Signal(object):
    def __init__(self):
        self._flush()

def _flush(self):
        self._receivers = set()
        self._receiver_list = []

def connect(self, receiver, name=None, sender=None):
        name = name or receiver.__name__
        key = (name, sender)
        if key not in self._receivers:
            self._receivers.add(key)
            self._receiver_list.append((name, receiver, sender))
        else:
            raise ValueError('receiver named %s (for sender=%s) already '
                             'connected' % (name, sender or 'any'))

def disconnect(self, receiver=None, name=None, sender=None):
        if receiver:
            name = name or receiver.__name__
        if not name:
            raise ValueError('a receiver or a name must be provided')

key = (name, sender)
        if key not in self._receivers:
            raise ValueError('receiver named %s for sender=%s not found.' %
                             (name, sender or 'any'))

self._receivers.remove(key)
        self._receiver_list = [(n, r, s) for n, r, s in self._receiver_list
                               if n != name and s != sender]

def __call__(self, name=None, sender=None):
        def decorator(fn):
            self.connect(fn, name, sender)
            return fn
        return decorator

def send(self, instance, *args, **kwargs):
        sender = type(instance)
        responses = []
        for n, r, s in self._receiver_list:
            if s is None or isinstance(instance, s):
                responses.append((r, r(sender, instance, *args, **kwargs)))
        return responses

pre_save = Signal()
post_save = Signal()
pre_delete = Signal()
post_delete = Signal()
pre_init = Signal()

class Model(_Model):
    def __init__(self, *args, **kwargs):
        super(Model, self).__init__(*args, **kwargs)
        pre_init.send(self)

def save(self, *args, **kwargs):
        pk_value = self._pk if self._meta.primary_key else True
        created = kwargs.get('force_insert', False) or not bool(pk_value)
        pre_save.send(self, created=created)
        ret = super(Model, self).save(*args, **kwargs)
        post_save.send(self, created=created)
        return ret

def delete_instance(self, *args, **kwargs):
        pre_delete.send(self)
        ret = super(Model, self).delete_instance(*args, **kwargs)
        post_delete.send(self)
        return ret

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Editing: signals.py

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