CODEWITHSUNDEEP
discord.js
Heko
Heko

Reputation: 43

Cannot read properties of undefined (reading 'answer')

I'm trying to make a command whereas it fetches another bot's embed title and checks if it exists in my JSON file. In my code, I'm trying to get my bot answer a riddle by another bot.
This is what I'm trying to do:
embed

This is my code (in the @456 bot):

const riddle = [
    {
      "riddle": "What has to be broken before you can use it?",
      "answer": "egg"
    },
    {
      "riddle": "I’m tall when I’m young, and I’m short when I’m old. What am I?",
      "answer": "candle"
    },
    {
      "riddle": "What month of the year has 28 days?",
      "answer": "all of them"
    },
    {
      "riddle": "What is full of holes but still holds water?",
      "answer": "sponge"
    },
    {
      "riddle": "What question can you never answer yes to?",
      "answer": "Are you asleep yet?"
    }
]
const id = args[0]
    if (isNaN(id)) return;
const msg = await message.channel.messages.fetch(id);
    if (!msg) return;
const answer = riddle.filter((obj) => obj.riddle === msg.embeds[0].title).answer
const emb = new MessageEmbed()
     .setAuthor(msg.embeds[0].title)
     .setDescription(msg.embeds[0].description)
     .setColor(msg.embeds[0].color)
message.channel.send({content: `__**Answer:**__ ${answer}`, embeds: [emb]})

I get an error Cannot read properties of undefined (reading 'answer') whenever I try to run this code. I also tried separating the riddle to a JSON file before. It worked but it gave me an undefined answer. How do I fix this?

Upvotes: 0

Views: 44

Answers (1)

G-Force
G-Force

Reputation: 375

I simplified the case so you can study the filter, and understand the return behavior, as well as the output you want, which I show in the console.log:

const riddle = [
    {
      "riddle": "What has to be broken before you can use it?",
      "answer": "egg"
    },
    {
      "riddle": "I’m tall when I’m young, and I’m short when I’m old. What am I?",
      "answer": "candle"
    },
    {
      "riddle": "What month of the year has 28 days?",
      "answer": "all of them"
    },
    {
      "riddle": "What is full of holes but still holds water?",
      "answer": "sponge"
    },
    {
      "riddle": "What question can you never answer yes to?",
      "answer": "Are you asleep yet?"
    }
];
const msg = {
    embeds:
        [
            {
                title: 'What question can you never answer yes to?',
            }
        ]
};

const answer = riddle.filter((obj) => obj.riddle === msg.embeds[0].title);
console.log(answer[0].answer);

you can make this more robust, but this will show you how the structures and filters work, which is your problem at hand.

Upvotes: 1

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