useMutation()

備註

@trpc/react-query 提供的掛勾是 @tanstack/react-query 的一層薄封裝。有關選項和使用模式的詳細資訊，請參閱其關於 變異 的文件。

運作方式類似於 react-query 的變異 - 參閱其文件。

範例

後端程式碼

server/routers/_app.ts
tsx
import { initTRPC } from '@trpc/server';
import { z } from 'zod';
export const t = initTRPC.create();
export const appRouter = t.router({
  // Create procedure at path 'login'
  // The syntax is identical to creating queries
  login: t.procedure
    // using zod schema to validate and infer input values
    .input(
      z.object({
        name: z.string(),
      }),
    )
    .mutation((opts) => {
      // Here some login stuff would happen
      return {
        user: {
          name: opts.input.name,
          role: 'ADMIN',
        },
      };
    }),
});

server/routers/_app.ts
tsx
import { initTRPC } from '@trpc/server';
import { z } from 'zod';
export const t = initTRPC.create();
export const appRouter = t.router({
  // Create procedure at path 'login'
  // The syntax is identical to creating queries
  login: t.procedure
    // using zod schema to validate and infer input values
    .input(
      z.object({
        name: z.string(),
      }),
    )
    .mutation((opts) => {
      // Here some login stuff would happen
      return {
        user: {
          name: opts.input.name,
          role: 'ADMIN',
        },
      };
    }),
});

tsx
import { trpc } from '../utils/trpc';
export function MyComponent() {
  // This can either be a tuple ['login'] or string 'login'
  const mutation = trpc.login.useMutation();
  const handleLogin = () => {
    const name = 'John Doe';
    mutation.mutate({ name });
  };
  return (
    <div>
      <h1>Login Form</h1>
      <button onClick={handleLogin} disabled={mutation.isLoading}>
        Login
      </button>
      {mutation.error && <p>Something went wrong! {mutation.error.message}</p>}
    </div>
  );
}

tsx
import { trpc } from '../utils/trpc';
export function MyComponent() {
  // This can either be a tuple ['login'] or string 'login'
  const mutation = trpc.login.useMutation();
  const handleLogin = () => {
    const name = 'John Doe';
    mutation.mutate({ name });
  };
  return (
    <div>
      <h1>Login Form</h1>
      <button onClick={handleLogin} disabled={mutation.isLoading}>
        Login
      </button>
      {mutation.error && <p>Something went wrong! {mutation.error.message}</p>}
    </div>
  );
}