discord-ext-pager

discord-ext-pager

A simple view-based paginator library for discord.py 2.0. Works with Python 3.8+.

Usage

discord-ext-pager is available on PyPI, and as such can be installed using pip.

Users of Danny's discord-ext-menus will find some familiarity in this library. Provided are the following classes:

• PaginatorView: The view class that manages pagination and navigation.
• PageSource: The base class for sources the paginator view can accept.
• ListPageSource: The base class for formatting a list of items.
• AsyncIteratorPageSource: The base class for formatting an asynchronous iterator of items.
• PageOption: A subclass of discord.SelectOption used for presenting navigation options.
• StopAction: An enum for customizing PaginatorView's stop button behaviour.
• TimeoutAction: An enum for customizing PaginatorView's timeout behaviour.

The PaginatorView can be instantiated and used by itself, but page formatting is handled by subclassing one of the PageSource base classes.

from typing import List
from discord.ext.pager import ListPageSource, PageSource, PaginatorView

class EmbedListPageSource(ListPageSource[object, PageSource, PaginatorView]):
    #                                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
    #            These type parameters denote the page item type,
    #            source type for page options (demonstrated later),
    #            and view type. Only needed for static typing.
    """Takes a list of items and formats it in an embed."""

    def format_page(self, view: PaginatorView, page: List[object]):
        index = self.current_index * self.page_size
        description = "\n".join(
            f"{i}. {x}"
            for i, x in enumerate(page, start=index + 1)
        )
        return discord.Embed(description=description)

# Anywhere a channel or interaction is available:
fruits = ["🍎 Apple", "🍊 Orange", "🍋 Lemon"]
source = EmbedListPageSource(fruits, page_size=2)
view = PaginatorView(sources=source, timeout=180)
await view.start(interaction)

If the navigation select menu is desired, the get_page_options() method should be overridden to return a list of PageOption objects for the user to select from:

from typing import List
from discord.ext.pager import ListPageSource, PageOption, PageSource, PaginatorView

class MessageSource(PageSource[str, PageSource, PaginatorView]):
    """A single page for displaying a string."""

    def __init__(self, message: str):
        super().__init__(current_index=0)
        self.message = message

    def get_page(self, index: int):
        return self.message

    def format_page(self, view: PaginatorView, page: str):
        # If we don't specify both content and embed, either will
        # persist as the user clicks between options
        return {"content": page, "embed": None}

class MessageNavigator(ListPageSource[MessageSource, MessageSource, PaginatorView]):
    """A list of messages for the user to select from."""

    def get_page_options(self, view: PaginatorView, page: List[MessageSource]):
        # PageOption() takes the same arguments as discord.SelectOption,
        # except that source= is also required
        return [PageOption(source=source, label=source.message) for source in page]

    def format_page(self, view: PaginatorView, page: List[MessageSource]):
        description = "\n".join(source.message for source in page)
        embed = discord.Embed(description=description)
        return {"content": None, "embed": embed}

hands = "👈👉👆👇🫵🤞🫰🤘🤙🤛🤜✊👊👋👏🙌"
source = MessageNavigator([MessageSource(s) for s in hands], page_size=5)
view = PaginatorView(sources=source)
await view.start(ctx)

When an option is selected, the PageSource contained within that option is appended to PaginatorView.sources, causing that source to be displayed. Another button is automatically provided for users to back out to the last page source. This can be manually triggered by passing a list of page sources to the PaginatorView(sources=) argument.

Examples

Click on an example below to see its source code: