I'm use python-telegram-bot for sending message to users (in private messages). In the documentation wrote, that bot can send message to user, knowing his channel_id or username.
But, by chat_id message is sending, but by username I get error telegram.error.Bad Request: Chat not found
`
bot.send_message(chat_id='@username', text)
Here it is quoted
chat_id (:obj:
int| :obj:str): Unique identifier for the target chat or username of the target channel (in the format @channelusername).
@log
def send_message(self,
chat_id,
text,
parse_mode=None,
disable_web_page_preview=None,
disable_notification=False,
reply_to_message_id=None,
reply_markup=None,
timeout=None,
**kwargs):
"""Use this method to send text messages.
Args:
chat_id (:obj:`int` | :obj:`str`): Unique identifier for the target chat or username
of the target channel (in the format @channelusername).
text (:obj:`str`): Text of the message to be sent. Max 4096 characters. Also found as
:attr:`telegram.constants.MAX_MESSAGE_LENGTH`.
parse_mode (:obj:`str`): Send Markdown or HTML, if you want Telegram apps to show bold,
italic, fixed-width text or inline URLs in your bot's message. See the constants in
:class:`telegram.ParseMode` for the available modes.
disable_web_page_preview (:obj:`bool`, optional): Disables link previews for links in
this message.
disable_notification (:obj:`bool`, optional): Sends the message silently. Users will
receive a notification with no sound.
reply_to_message_id (:obj:`int`, optional): If the message is a reply, ID of the
original message.
reply_markup (:class:`telegram.ReplyMarkup`, optional): Additional interface options.
A JSON-serialized object for an inline keyboard, custom reply keyboard,
instructions to remove reply keyboard or to force a reply from the user.
timeout (:obj:`int` | :obj:`float`, optional): If this value is specified, use it as
the read timeout from the server (instead of the one specified during creation of
the connection pool).
**kwargs (:obj:`dict`): Arbitrary keyword arguments.
Returns:
:class:`telegram.Message`: On success, the sent message is returned.
Raises:
:class:`telegram.TelegramError`
"""
url = '{0}/sendMessage'.format(self.base_url)
data = {'chat_id': chat_id, 'text': text}
if parse_mode:
data['parse_mode'] = parse_mode
if disable_web_page_preview:
data['disable_web_page_preview'] = disable_web_page_preview
return self._message(url, data, disable_notification=disable_notification,
reply_to_message_id=reply_to_message_id, reply_markup=reply_markup,
timeout=timeout, **kwargs)
You should send channel name not the the username of user here.
Here's my method
def save_user_id(bot, update):
username = get_username(update)
tg_user, created = YourModel.objects.get_or_create(username=username,
first_name=update.message.from_user.first_name,
telegram_user_id=update.message.from_user.id)
so later you can use username to send a message:
user = YourModel.objects.get(username='@username')
bot.send_message(chat_id=user.telegram_user_id, text='your text')
forgot to add get_username func. It's simple:
def get_username(update):
username = update.message.from_user.username
but I'd recommend to extend it to your needs, because some of users haven't setup their usernames
