Tips for navigating to a specific row within a designated page using the Angular Material table

Question

Tips for navigating to a specific row within a designated page using the Angular Material table

Utilizing angular material, I have set up a table with pagination for displaying data. When a user clicks on a row, they are redirected to another page. To return to the table page, they must click on a button.

The issue arises when the user needs to return to the table page and scroll to the specific row. Currently, this is done using:

document.getElementById(elementId).scrollIntoView()

If the clicked row is not on the first page, the element cannot be found. How can I paginate to the correct page where the row exists?

Furthermore, another problem occurs when a user filters the table and selects a row. If I save the page number, the data will render without the filter applied, causing the page number to be incorrect upon returning to the table page.

javascript angular typescript angular-material

Answer 1

Answer №1

If you plan on navigating to another page, remember to store the information related to pageIndex. This way, when you return to your data table, you can assign this index number to [pageIndex]. Example:

<mat-paginator [length]="length"
          [pageSize]="pageSize"
          [pageSizeOptions]="pageSizeOptions"
          (page)="pageEvent = $event"
          [pageIndex]="pIndex">
</mat-paginator>

In this code snippet, pIndex is a variable defined in my Component. If your pageSize is 10 and pageIndex is 0, then it will display rows 1 to 10...

For further details: https://stackblitz.com/angular/ngdejmepgbr?file=app%2Fpaginator-configurable-example.html

Answer 2

If you plan on navigating to another page, remember to store the information related to pageIndex. This way, when you return to your data table, you can assign this index number to [pageIndex]. Example:

<mat-paginator [length]="length"
          [pageSize]="pageSize"
          [pageSizeOptions]="pageSizeOptions"
          (page)="pageEvent = $event"
          [pageIndex]="pIndex">
</mat-paginator>

In this code snippet, pIndex is a variable defined in my Component. If your pageSize is 10 and pageIndex is 0, then it will display rows 1 to 10...

For further details: https://stackblitz.com/angular/ngdejmepgbr?file=app%2Fpaginator-configurable-example.html

Answer 3

Answer №2

To integrate the paginator with Angular's router, you need to follow these steps:

Assuming your route path is structured like this:

http://my/url/to/table/component?page=2

You can extract the page index from the URL and apply it to the table as shown below:

In your Component Class:

class MyComponent {

  pageIndex = this.activatedRoute.queryParams.pipe(
    map(params => params['page'])
  );

  constructor(activatedRoute: ActivatedRoute) {}
}

In your Template:

<mat-paginator [pageIndex]="pageIndex | async"></mat-paginator>

Now that the table is linked to the URL via the paginator, you also need to update the URL when the user navigates through the table:

In your Template:

<mat-paginator [pageIndex]="pageIndex | async" (page)="pageChange($event)"></mat-paginator>

In your Component Class:

class MyComponent {

  pageIndex = this.activatedRoute.queryParams.pipe(
    map(params => params['page'])
  )

  constructor(activatedRoute: ActivatedRoute, router: Router) {}

  pageChange(e: PageEvent): void {
    this.router.navigate( /* ... */ );
  }
}

By updating the URL as the user interacts with the table, the router can effectively control the table content when navigating back to a previously visited URL.

Answer 4

To integrate the paginator with Angular's router, you need to follow these steps:

Assuming your route path is structured like this:

http://my/url/to/table/component?page=2

You can extract the page index from the URL and apply it to the table as shown below:

In your Component Class:

class MyComponent {

  pageIndex = this.activatedRoute.queryParams.pipe(
    map(params => params['page'])
  );

  constructor(activatedRoute: ActivatedRoute) {}
}

In your Template:

<mat-paginator [pageIndex]="pageIndex | async"></mat-paginator>

Now that the table is linked to the URL via the paginator, you also need to update the URL when the user navigates through the table:

In your Template:

<mat-paginator [pageIndex]="pageIndex | async" (page)="pageChange($event)"></mat-paginator>

In your Component Class:

class MyComponent {

  pageIndex = this.activatedRoute.queryParams.pipe(
    map(params => params['page'])
  )

  constructor(activatedRoute: ActivatedRoute, router: Router) {}

  pageChange(e: PageEvent): void {
    this.router.navigate( /* ... */ );
  }
}

By updating the URL as the user interacts with the table, the router can effectively control the table content when navigating back to a previously visited URL.

Tips for navigating to a specific row within a designated page using the Angular Material table

Answer №1

Answer №2

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