Kendo Grid保存与刷新：修改变量后如何持久化变更并刷新网格

Got it, let's get your Kendo Grid working properly so that after you toggle that boolean from false to true, the change sticks even after a page refresh. Here's what's missing in your current code and how to fix it step by step:

1. First, Ensure Your Service Method Handles Async Operations #

Right now, your bloquear method likely doesn't return a promise (or observable) to confirm when the save operation completes. Without waiting for this, you might refresh the grid before the change is actually persisted to your backend.

Update your service method to return a promise (assuming you're using Angular's HttpClient):

bloquear(id: number): Promise<void> {
  // Replace with your actual API endpoint for the toggle operation
  return this.http.put(`/api/your-resource/${id}/toggle-bloquear`, {}).toPromise();
}

2. Refine the Click Handler to Wait for Save & Refresh the Grid #

Your current onClickBloquear calls the service but doesn't wait for it to finish, and doesn't trigger a grid refresh. Let's fix that with async/await to handle the async flow properly:

async onClickBloquear(event: any) {
  if (!event.dataItem) return; // Clean up the null check for readability

  const id = event.dataItem.id;
  try {
    // Wait for the save operation to complete successfully
    await this.service.bloquear(id);
    
    // Refresh the grid's data source to pull the latest persisted state
    this.gridInstance.dataSource.read();
    
    // Optional: If you want to update the row immediately without reloading all data
    // event.dataItem.yourBooleanProperty = true;
    // this.gridInstance.dataSource.sync();
  } catch (error) {
    // Handle errors gracefully (e.g., show a user-friendly message)
    console.error('Failed to update the item:', error);
    alert('Oops, couldn\'t save the change. Please try again.');
  }
}

3. Get Access to the Kendo Grid Instance #

To call dataSource.read(), you need a reference to your grid component. Here's how to set that up:

In your component's template, add a template reference to the grid:

<kendo-grid #myKendoGrid [data]="yourDataSource">
  <!-- Your column definitions and grid config go here -->
</kendo-grid>

Then in your component class, use ViewChild to grab that instance:

import { ViewChild } from '@angular/core';
import { GridComponent } from '@progress/kendo-angular-grid';

export class YourComponent {
  @ViewChild('myKendoGrid') gridInstance!: GridComponent;
  
  // ... rest of your component code
}

Key Notes to Remember #

• Always wait for async operations: Using await ensures you don't refresh the grid until the backend has confirmed the change is saved.
• Refresh the data source: dataSource.read() fetches the latest data from your backend, so even if the user refreshes the page, the updated value will persist.
• Error handling: Adding a try/catch block helps you handle cases where the save fails (e.g., network issues) and keeps the user informed.

内容的提问来源于stack exchange，提问作者Mario Ramos García