set page on p:datatable

Question

I\'ve a datatable in primefaces and I want, when I add a row in it, view the last page of the datatable.

My .xhtml page is:

...         


        

Answer 1

You could avoid the explicit ID in your code by using bindings:

xhtml:

bean:

public class CalculatePageTable {
private DataTable dataTable;

public DataTable getDataTable() {
    return dataTable;
}

public void setDataTable(DataTable dataTable) {
    this.dataTable = dataTable;
}

/* See Teg's answer */
public void setPageDataTable() {
    int first = 1;
    if (dataTable.getRowCount() % ROWS_DATATABLE == 0) {
        first = (dataTable.getRowCount() - ROWS_DATATABLE);
    }
    else 
    {
        first = (dataTable.getRowCount()/ROWS_DATATABLE)*ROWS_DATATABLE;
    }
    dataTable.setFirst(first);
}
}