RealityShift•12mo ago

Generic Zod as Input Type

I'm not positive if this is a TRPC question, typescript in general, or failure to understand Zod in this usecase. Our API has a several endpoints that all work the same way just pass in different payloads. I'm trying to create a single function to assign to all my TRPC routes:

enum Endpoint {
    "Person" = "/users/person",
    "Company" = "/core/company",
}

update: createTRPCRouter({
    person: updateGeneric(ZPersonUpdate, Endpoint.Person),
    company: updateGeneric(ZCompanyUpdate, Endpoint.Company),
})

function createUpdateApiProcedure<T extends z.SomeZodObject>(schema: T, path: Endpoint) {
    return protectedProcedure.input(
        z.object({id: z.number()}).extend(schema)
    ).mutation(async ({ ctx, input }) => {
        //call api with payload
    })
}

enum Endpoint {
    "Person" = "/users/person",
    "Company" = "/core/company",
}

update: createTRPCRouter({
    person: updateGeneric(ZPersonUpdate, Endpoint.Person),
    company: updateGeneric(ZCompanyUpdate, Endpoint.Company),
})

function createUpdateApiProcedure<T extends z.SomeZodObject>(schema: T, path: Endpoint) {
    return protectedProcedure.input(
        z.object({id: z.number()}).extend(schema)
    ).mutation(async ({ ctx, input }) => {
        //call api with payload
    })
}

I'm not sure what should be in the input section to make this work?

2 Replies

Nick•12mo ago

You want a Router Factory, and potentially the polymorphism utilities I have a dev.to post on it if you google for “trpc router factories” but it’s a more advanced topic so we don’t really push this in the docs Inputs themselves can’t be generic though, you need to have multiple routers

RealityShift•11mo ago

Got it thanks Nick!