ꦫꦣꦺꦤ꧀ꦄꦤ꧀ꦠꦱꦺꦤ

PATH: opt / alt / python38 / lib64 / python3.8 / site-packages / playhouse

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

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

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

def disconnect(self, receiver=None, name=None):
        if receiver:
            name = receiver.__name__
        if name:
            del self._receivers[name]
            self._receiver_list.remove(name)
        else:
            raise ValueError('a receiver or a name must be provided')

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 name in self._receiver_list:
            r, s = self._receivers[name]
            if s is None or isinstance(instance, s):
                responses.append((r, r(sender, instance, *args, **kwargs)))
        return responses

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

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

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

def prepared(self):
        super(Model, self).prepared()
        post_init.send(self)

def save(self, *args, **kwargs):
        pk_value = self._get_pk_value()
        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

[-] csv_loader.py [edit]
[-] reflection.py [edit]
[-] dataset.py [edit]
[-] migrate.py [edit]
[+] ..
[-] kv.py [edit]
[-] gfk.py [edit]
[-] pool.py [edit]
[-] csv_utils.py [edit]
[-] sqlite_udf.py [edit]
[-] signals.py [edit]
[-] postgres_ext.py [edit]
[-] sqliteq.py [edit]
[-] _sqlite_ext.cpython-38-x86_64-linux-gnu.so [edit]
[-] fields.py [edit]
[-] _speedups.cpython-38-x86_64-linux-gnu.so [edit]
[+] __pycache__
[-] apsw_ext.py [edit]
[-] djpeewee.py [edit]
[-] shortcuts.py [edit]
[-] db_url.py [edit]
[-] sqlcipher_ext.py [edit]
[-] test_utils.py [edit]
[-] read_slave.py [edit]
[-] __init__.py [edit]
[-] berkeleydb.py [edit]
[-] hybrid.py [edit]
[-] flask_utils.py [edit]
[-] sqlite_ext.py [edit]
[-] _sqlite_udf.cpython-38-x86_64-linux-gnu.so [edit]