Update paginator.py

Simple Embed paginator that I've been using for a while. Thought it could help others too.

examples/views/paginator.py

@@ -0,0 +1,210 @@
+import discord
+from discord.ext import commands
+from discord import ButtonStyle, Embed, Interaction
+from discord.ui import Button, View
+
+
+class Bot(commands.Bot):
+    def __init__(self):
+        super().__init__(
+            command_prefix=commands.when_mentioned_or("$"), intents=discord.Intents(guilds=True, messages=True)
+        )
+
+    async def on_ready(self):
+        print(f"Logged in as {self.user} (ID: {self.user.id})")
+        print("------")
+
+
+# Define 3 View subclasses that we will switch between depending on if we are viewing the first page, a page in the middle, or the last page.
+# The first page has the "left" button disabled, because there is no left page to go to
+class FirstPageComps(View):
+    def __init__(
+        self,
+        author_id: int,
+    ):
+        super().__init__()
+        self.value = None
+        self.author_id = author_id
+
+    async def interaction_check(
+        self,
+        interaction: Interaction,
+    ):
+        return interaction.user.id == self.author_id
+
+    @discord.ui.button(
+        style=ButtonStyle.primary,
+        disabled=True,
+        label="Left",
+    )
+    async def left(
+        self,
+        button: discord.ui.Button,
+        interaction: Interaction,
+    ):
+        self.value = "left"
+        self.stop()
+
+    @discord.ui.button(
+        style=ButtonStyle.primary,
+        label="Right",
+    )
+    async def right(
+        self,
+        button: discord.ui.Button,
+        interaction: Interaction,
+    ):
+        self.value = "right"
+        self.stop()
+
+
+# The middle pages have both left and right buttons available
+class MiddlePageComps(View):
+    def __init__(
+        self,
+        author_id: int,
+    ):
+        super().__init__()
+        self.value = None
+        self.author_id = author_id
+
+    async def interaction_check(
+        self,
+        interaction: Interaction,
+    ):
+        return interaction.user.id == self.author_id
+
+    @discord.ui.button(
+        style=ButtonStyle.primary,
+        label="Left",
+    )
+    async def left(
+        self,
+        button: discord.ui.Button,
+        interaction: Interaction,
+    ):
+        self.value = "left"
+        self.stop()
+
+    @discord.ui.button(
+        style=ButtonStyle.primary,
+        label="Right",
+    )
+    async def right(
+        self,
+        button: discord.ui.Button,
+        interaction: Interaction,
+    ):
+        self.value = "right"
+        self.stop()
+
+
+# The last page has the right button disabled, because there's no right page to go to
+class LastPageComps(View):
+    def __init__(
+        self,
+        author_id: int,
+    ):
+        super().__init__()
+        self.value = None
+        self.author_id = author_id
+
+    async def interaction_check(
+        self,
+        interaction: Interaction,
+    ):
+        return interaction.user.id == self.author_id
+
+    @discord.ui.button(
+        style=ButtonStyle.primary,
+        label="Left",
+    )
+    async def left(
+        self,
+        button: discord.ui.Button,
+        interaction: Interaction,
+    ):
+        self.value = "left"
+        self.stop()
+
+    @discord.ui.button(
+        style=ButtonStyle.primary,
+        label="Right",
+        disabled=True,
+    )
+    async def right(
+        self,
+        button: discord.ui.Button,
+        interaction: Interaction,
+    ):
+        self.value = "right"
+        self.stop()
+
+
+# Now we define the function that will take care of the pagination for us. It will take a list of Embeds and allow the user to cycle between them using left/right buttons
+# There is also an optional title parameter in case you want to give your paginator a title, it will display in the embed title, for example if the title is Book
+# then the title will look like "Book | Page 1/2". This is very optional and can be removed
+async def paginate(
+    ctx,
+    pages: list,
+    title: str = None,
+):
+
+    total_pages = len(pages)
+    first_page = pages[0]
+    last_page = pages[-1]
+    current_page = first_page
+    index = 0
+
+    embed = first_page
+    if title:
+        embed.title = f"{title} | Page {index+1}/{total_pages}"
+
+    view = FirstPageComps(ctx.author.id)
+    # Here we send the message with the view of the first page and the FirstPageComps buttons
+    msg = await ctx.send(
+        embed=embed,
+        view=view,
+    )
+
+    # The default timeout for Views is 3 minutes, but if a user selects to scroll between pages the timer will be reset.
+    # If the timer reaches 0, though, the loop will just silently stop.
+    while True:
+        wait = await view.wait()
+        if wait:
+            return
+
+        if view.value == "right":
+            index += 1
+            current_page = pages[index]
+            view = MiddlePageComps(ctx.author.id) if current_page != last_page else LastPageComps(ctx.author.id)
+            embed = current_page
+            if title:
+                embed.title = f"{title} | Page {index+1}/{total_pages}"
+
+        elif view.value == "left":
+            index -= 1
+            current_page = pages[index]
+            view = MiddlePageComps(ctx.author.id) if current_page != first_page else FirstPageComps(ctx.author.id)
+            embed = current_page
+            if title:
+                embed.title = f"{title} | Page {index+1}/{total_pages}"
+
+        await msg.edit(
+            embed=embed,
+            view=view,
+        )
+
+
+bot = Bot()
+
+# To test our new function, let's create a list of a couple Embeds and let our paginator deal with the sending and buttons
+@bot.command()
+async def sendpages(ctx):
+    page1 = Embed(description="This is page 1")
+    page2 = Embed(description="This is page 2")
+    page3 = Embed(description="This is page 3")
+    await paginate(ctx, [page1, page2, page3])
+
+
+bot.run("token")