Why do we pass the database client in the context

Hey there

In the examples and in T3app we pass the db client in the trpc context

export async function createContextInner(opts?: CreateInnerContextOptions) {
  return {
    prisma,
    session: opts.session,
  };
}

export async function createContextInner(opts?: CreateInnerContextOptions) {
  return {
    prisma,
    session: opts.session,
  };
}

then, to make requests to the db we use it from the context such as

ctx.prisma.whatever.create()

ctx.prisma.whatever.create()

I would like to understand why do we do so.
Why no just import the client and use it such as

import { prisma } from "~/server/db";

import { prisma } from "~/server/db";

and then in the router use

prisma.whatever.create()

prisma.whatever.create()

without the ctx.

Why is it used from the context?
What are the benefits?
does it really matter?

tRPC•3y ago•

1 reply