best strategy for handling global trpc errors on the client

I’m using trpc in my nextjs app. In one of my procedures, I check if a server is banned. If it is, I throw a

TRPCError

TRPCError

with code

FORBIDDEN

FORBIDDEN

and a custom message:

const guildIsBanned = await ctx.db.guildBotBans.findFirst({
  where: { guildId: input.guildId },
});

if (guildIsBanned) {
  throw new TRPCError({
    code: "FORBIDDEN",
    message: `Server is banned from using the bot for reason: \`${guildIsBanned.reason}\``,
  });
}

const guildIsBanned = await ctx.db.guildBotBans.findFirst({
  where: { guildId: input.guildId },
});

if (guildIsBanned) {
  throw new TRPCError({
    code: "FORBIDDEN",
    message: `Server is banned from using the bot for reason: \`${guildIsBanned.reason}\``,
  });
}

This works, but on the frontend it just results in empty pages being rendered whenever the error is thrown.

I have 20+ pages in my app, and I don’t want to manually add onError logic to every useQuery just to check if the error code is

FORBIDDEN

FORBIDDEN

and then render a

You are banned

You are banned

component.

Is there a neater way of handling this error globally?

tRPC•7mo ago•

1 reply

v28

best strategy for handling global trpc errors on the client

I’m using trpc in my nextjs app. In one of my procedures, I check if a server is banned. If it is, I throw a

TRPCError

TRPCError

with code

FORBIDDEN

FORBIDDEN

and a custom message:

const guildIsBanned = await ctx.db.guildBotBans.findFirst({
  where: { guildId: input.guildId },
});

if (guildIsBanned) {
  throw new TRPCError({
    code: "FORBIDDEN",
    message: `Server is banned from using the bot for reason: \`${guildIsBanned.reason}\``,
  });
}

const guildIsBanned = await ctx.db.guildBotBans.findFirst({
  where: { guildId: input.guildId },
});

if (guildIsBanned) {
  throw new TRPCError({
    code: "FORBIDDEN",
    message: `Server is banned from using the bot for reason: \`${guildIsBanned.reason}\``,
  });
}

FORBIDDEN

FORBIDDEN

and then render a

You are banned

You are banned

component.

Is there a neater way of handling this error globally?

best strategy for handling global trpc errors on the client

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