Init Data

Zova SSR prepares the initial data on the server in a very intuitive way and synchronizes it to the client, and automatically completing the hydration

__init__与Model

The following takes the page component todo of the module demo-todo as an example:

src/suite/a-demo/modules/demo-todo/src/page/todo/controller.ts

import { ModelTodo } from '../../bean/model.todo.js';

@Local()
export class ControllerPageTodo {
  @Use()
  $$modelTodo: ModelTodo;

  protected async __init__() {
    // todos
    const queryTodos = this.$$modelTodo.select();
    await queryTodos.suspense();
    if (queryTodos.error) throw queryTodos.error;
  }
}

1. Create a model bean: ModelTodo, see: Model: Async Data
2. Inject ModelTodo through @Use
3. Call the suspense method directly in the __init__ method to prepare the data

Principle analysis

1. The underlying Model bean is based on TanStack Query, automatically supports SSR, and the data on the server will be synchronized to the client, and hydration will be completed automatically
2. __init__ supports asynchronous calls, initializes data on the server, and when the client executes again, it will automatically obtain the data prepared by the server from the hydrated cache