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128 lines
4.7 KiB
ReStructuredText
128 lines
4.7 KiB
ReStructuredText
=====================
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Working with messages
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=====================
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.. note::
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These examples assume you have read :ref:`accessing-the-full-api`.
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Forwarding messages
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*******************
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Note that ForwardMessageRequest_ (note it's Message, singular) will *not*
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work if channels are involved. This is because channel (and megagroups) IDs
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are not unique, so you also need to know who the sender is (a parameter this
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request doesn't have).
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Either way, you are encouraged to use ForwardMessagesRequest_ (note it's
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Message*s*, plural) *always*, since it is more powerful, as follows:
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.. code-block:: python
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from telethon.tl.functions.messages import ForwardMessagesRequest
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# note the s ^
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messages = foo() # retrieve a few messages (or even one, in a list)
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from_entity = bar()
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to_entity = baz()
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client(ForwardMessagesRequest(
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from_peer=from_entity, # who sent these messages?
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id=[msg.id for msg in messages], # which are the messages?
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to_peer=to_entity # who are we forwarding them to?
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))
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The named arguments are there for clarity, although they're not needed because
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they appear in order. You can obviously just wrap a single message on the list
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too, if that's all you have.
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Searching Messages
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*******************
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Messages are searched through the obvious SearchRequest_, but you may run
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into issues_. A valid example would be:
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.. code-block:: python
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from telethon.tl.functions.messages import SearchRequest
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from telethon.tl.types import InputMessagesFilterEmpty
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filter = InputMessagesFilterEmpty()
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result = client(SearchRequest(
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peer=peer, # On which chat/conversation
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q='query', # What to search for
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filter=filter, # Filter to use (maybe filter for media)
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min_date=None, # Minimum date
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max_date=None, # Maximum date
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offset_id=0, # ID of the message to use as offset
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add_offset=0, # Additional offset
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limit=10, # How many results
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max_id=0, # Maximum message ID
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min_id=0, # Minimum message ID
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from_id=None # Who must have sent the message (peer)
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))
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It's important to note that the optional parameter ``from_id`` could have
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been omitted (defaulting to ``None``). Changing it to InputUserEmpty_, as one
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could think to specify "no user", won't work because this parameter is a flag,
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and it being unspecified has a different meaning.
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If one were to set ``from_id=InputUserEmpty()``, it would filter messages
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from "empty" senders, which would likely match no users.
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If you get a ``ChatAdminRequiredError`` on a channel, it's probably because
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you tried setting the ``from_id`` filter, and as the error says, you can't
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do that. Leave it set to ``None`` and it should work.
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As with every method, make sure you use the right ID/hash combination for
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your ``InputUser`` or ``InputChat``, or you'll likely run into errors like
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``UserIdInvalidError``.
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Sending stickers
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****************
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Stickers are nothing else than ``files``, and when you successfully retrieve
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the stickers for a certain sticker set, all you will have are ``handles`` to
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these files. Remember, the files Telegram holds on their servers can be
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referenced through this pair of ID/hash (unique per user), and you need to
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use this handle when sending a "document" message. This working example will
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send yourself the very first sticker you have:
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.. code-block:: python
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# Get all the sticker sets this user has
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sticker_sets = client(GetAllStickersRequest(0))
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# Choose a sticker set
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sticker_set = sticker_sets.sets[0]
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# Get the stickers for this sticker set
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stickers = client(GetStickerSetRequest(
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stickerset=InputStickerSetID(
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id=sticker_set.id, access_hash=sticker_set.access_hash
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)
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))
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# Stickers are nothing more than files, so send that
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client(SendMediaRequest(
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peer=client.get_me(),
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media=InputMediaDocument(
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id=InputDocument(
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id=stickers.documents[0].id,
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access_hash=stickers.documents[0].access_hash
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),
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caption=''
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)
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))
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.. _ForwardMessageRequest: https://lonamiwebs.github.io/Telethon/methods/messages/forward_message.html
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.. _ForwardMessagesRequest: https://lonamiwebs.github.io/Telethon/methods/messages/forward_messages.html
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.. _SearchRequest: https://lonamiwebs.github.io/Telethon/methods/messages/search.html
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.. _issues: https://github.com/LonamiWebs/Telethon/issues/215
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.. _InputUserEmpty: https://lonamiwebs.github.io/Telethon/constructors/input_user_empty.html
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