3 replies

t3 tRPC - CTX is undefined

Hey all. Finally checking t3 for the first time.

Question.

I was trying to add to the latest post query so that the latest post will be from the current user not all users.

 const post = await ctx.db.query.posts.findFirst({
      orderBy: (posts, { desc }) => [desc(posts.createdAt)],
      where: (posts, { eq }) => eq(posts.createdById, ctx.session!.user.id),
    });

 const post = await ctx.db.query.posts.findFirst({
      orderBy: (posts, { desc }) => [desc(posts.createdAt)],
      where: (posts, { eq }) => eq(posts.createdById, ctx.session!.user.id),
    });

<LatestPost> has a call to getLatest

const [latestPost] = api.post.getLatest.useSuspenseQuery();

const [latestPost] = api.post.getLatest.useSuspenseQuery();

Which is called serverside first. I am confused why, for the first serverside call, ctx in trpc is null.
To be fair this is fixed when

void api.post.getLatest.prefetch();

void api.post.getLatest.prefetch();

is called in

page.tsx

page.tsx

But I do not understand why I have to prefetch

getLatest

getLatest

for this to work?

Apologies if this is not the place to ask this or my question does not make sense.

TTC

Theo's Typesafe Cult•2y ago•

3 replies

Simon Verhoeven

t3 tRPC - CTX is undefined

Hey all. Finally checking t3 for the first time.

Question.

I was trying to add to the latest post query so that the latest post will be from the current user not all users.

 const post = await ctx.db.query.posts.findFirst({
      orderBy: (posts, { desc }) => [desc(posts.createdAt)],
      where: (posts, { eq }) => eq(posts.createdById, ctx.session!.user.id),
    });

 const post = await ctx.db.query.posts.findFirst({
      orderBy: (posts, { desc }) => [desc(posts.createdAt)],
      where: (posts, { eq }) => eq(posts.createdById, ctx.session!.user.id),
    });

<LatestPost> has a call to getLatest

const [latestPost] = api.post.getLatest.useSuspenseQuery();

const [latestPost] = api.post.getLatest.useSuspenseQuery();

Which is called serverside first. I am confused why, for the first serverside call, ctx in trpc is null.
To be fair this is fixed when

void api.post.getLatest.prefetch();

void api.post.getLatest.prefetch();

is called in

page.tsx

page.tsx

But I do not understand why I have to prefetch

getLatest

getLatest

for this to work?

Apologies if this is not the place to ask this or my question does not make sense.

t3 tRPC - CTX is undefined

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