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119 lines
4.0 KiB
ReStructuredText
119 lines
4.0 KiB
ReStructuredText
Smart Plugins
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=============
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Pyrogram embeds a **smart** (automatic) and lightweight plugin system that is meant to further simplify the organization
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of large projects and to provide a way for creating pluggable components that can be **easily shared** across different
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Pyrogram applications with **minimal boilerplate code**.
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Introduction
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------------
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Prior to the Smart Plugin system, pluggable handlers were already possible. For example, if you wanted to modularize
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your applications, you had to do something like this...
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.. note:: This is an example application that replies in private chats with two messages: one containing the same
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text message you sent and the other containing the reversed text message (e.g.: "pyrogram" -> "pyrogram" and
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"margoryp"):
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.. code-block:: text
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myproject/
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config.ini
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handlers.py
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main.py
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- ``handlers.py``
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.. code-block:: python
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def echo(client, message):
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message.reply(message.text)
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def echo_reversed(client, message):
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message.reply(message.text[::-1])
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- ``main.py``
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.. code-block:: python
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from pyrogram import Client, MessageHandler, Filters
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from handlers import echo, echo_reversed
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app = Client("my_account")
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app.add_handler(
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MessageHandler(
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echo,
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Filters.text & Filters.private))
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app.add_handler(
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MessageHandler(
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echo_reversed,
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Filters.text & Filters.private),
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group=1)
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app.run()
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...which is already nice and doesn't add *too much* boilerplate code, but things can get boring still; you have to
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manually ``import``, manually :meth:`add_handler <pyrogram.Client.add_handler>` and manually instantiate each
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:obj:`MessageHandler <pyrogram.MessageHandler>` object because **you can't use those cool decorators** for your
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functions. So... What if you could?
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Using Smart Plugins
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-------------------
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Setting up your Pyrogram project to accommodate Smart Plugins is as easy as creating a folder and putting your files
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full of handlers inside.
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.. note::
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This is the same example application `as shown above <#introduction>`_, written using the Smart Plugin system.
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.. code-block:: text
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:emphasize-lines: 2, 3
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myproject/
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plugins/
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handlers.py
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config.ini
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main.py
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- ``plugins/handlers.py``
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.. code-block:: python
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:emphasize-lines: 4, 9
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from pyrogram import Client, Filters
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@Client.on_message(Filters.text & Filters.private)
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def echo(client, message):
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message.reply(message.text)
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@Client.on_message(Filters.text & Filters.private, group=1)
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def echo_reversed(client, message):
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message.reply(message.text[::-1])
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- ``main.py``
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.. code-block:: python
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from pyrogram import Client
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Client("my_account").run()
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The first important thing to note is the ``plugins`` folder, whose name is default and can be changed easily by setting
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the ``plugins_dir`` parameter when creating a :obj:`Client <pyrogram.Client>`; you can put *any python file* in there
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and each file can contain *any decorated function* (handlers) with only one limitation: within a single plugin file you
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must use different names for each decorated function. Your Pyrogram Client instance (in the ``main.py`` file) will
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**automatically** scan the folder upon creation to search for valid handlers and register them for you.
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Then you'll notice you can now use decorators. That's right, you can apply the usual decorators to your callback
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functions in a static way, i.e. **without having the Client instance around**: simply use ``@Client`` (Client class)
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instead of the usual ``@app`` (Client instance) namespace and things will work just the same.
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The ``main.py`` script is now at its bare minimum and cleanest state.
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