RealityShift•15mo 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•15mo 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

RealityShiftOP•14mo ago

Got it thanks Nick!

Generic Zod as Input Type

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