# Discord Bot#4 Reaction Role --- ## 前置作業 ---- ### 幫機器人創一個身分組 - 記得把管理身分組權限打開  ---- ### 創一個你要自動新增的身分組 - bot的身分組一定要在這個身分組上面  ---- ### 上傳一個表情符號(Optional) ---- ## 在Cog資料夾底下新增role. py ```python= import discord from discord.ext import commands class Role(commands.Cog): def __init__(self, bot): self.bot = bot def setup(bot): bot.add_cog(Role(bot)) ``` --- ## Reaction - on_reaction_add vs on_raw_reaction_add ---- ### Sum up - on_reaction_add: 重開機器人之後的發出的訊息有效 - on_raw_reaction_add: 只要有人點reaction就會觸發 ---- ### emoji格式 - 自定義 - 內建(Unicode) ---- ### 自定義emoji 在輸入欄打一個表情符號，之後在前面加上一個反斜線，按下enter，就會顯示自定義emoji的格式 - 格式類似這樣 <:emoji_name:emoji_id> <:energy_emmo:953329973702316072> ---- ### 內建emoji 要去查你要的表情的Unicode https://unicode.org/emoji/charts/full-emoji-list.html#1f5fb ``` Example: Thinking emoji的Unicode是U+1F914，在Python裡是用\U0001F914表示 ``` ---- ### Example ```python= @commands.Cog.listener() async def on_raw_reaction_add(self, payload): # if str(payload.emoji) == '<:energy_emmo:953329973702316072>': if str(payload.emoji) == '\U0001F914': print('TEST') ``` --- ## Role ---- ### add_roles 1. 從payload中抓到發出訊息的伺服器(guild) 2. 從這個伺服器物件用role_id抓到我們想要加的身分組 3. 把這個按表情的成員新增一個身分組 ---- ### 取得role_id 伺服器設定->身分組->右鍵身分組->複製id  ---- ### Example ```python= @commands.Cog.listener() async def on_raw_reaction_add(self, payload): if str(payload.emoji) == '\U0001F914': guild = self.bot.get_guild(payload.guild_id) role = guild.get_role(roleID) member = await guild.fetch_member(payload.user_id) await member.add_roles(role) ``` ---- ### 移除身分組也是一樣的作法 ```python= @commands.Cog.listener() async def on_raw_reaction_remove(self, payload): if str(payload.emoji) == '\U0001F914': guild = self.bot.get_guild(payload.guild_id) role = guild.get_role(roleID) member = await guild.fetch_member(payload.user_id) await member.remove_roles(role) ``` --- ## 支援多個身分組 ---- ### Dictionary - 把表情和對應的身分組id做成一個字典 ```python= roleDict = {'\U0001F914': 953334015652417596, '<:energy_emmo:953329973702316072>': 953462476723347476} ``` ---- ### dict.items() - 幫助我們把字典的key,val分開處理 https://docs.python.org/3/tutorial/datastructures.html#dictionaries ---- ### Example ```python= @commands.Cog.listener() async def on_raw_reaction_add(self, payload): for emoji, roleID in roleDict.items(): if str(payload.emoji) == emoji: guild = self.bot.get_guild(payload.guild_id) role = guild.get_role(roleID) member = await guild.fetch_member(payload.user_id) await member.add_roles(role) ``` --- ### 新增提示 ```python= @commands.command() async def role(self, ctx): msg = '' for emoji, roleID in roleDict.items(): role = ctx.guild.get_role(roleID) msg += f'{emoji} : {role}\n' await ctx.send(msg) msg_obj = await ctx.send(msg) for emoji in roleDict: await msg_obj.add_reaction(emoji) ```