PHP Generator Feature Demo
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  1. Calculated Columns
  2. Calculated Columns.Example - 1
    • Example - 2

Calculated Columns.Example - 1

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This example demonstrates how to add calculated columns to a page. Such columns do not exist in the data source the page is based on and their values are automatically computed using other column values or another deterministic expression.

The server-side OnCalculateFields and the client-side OnCalculateControlValues events allow you to provide PHP and JavaScript code respectively for calculating values of these columns.

This page contains two calculated columns: Full Name and Age. Click the button to learn how the values of these columns are computed.

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// server-side event
        protected function doCalculateFields($rowData, $fieldName, &$value)
        {
            if ($fieldName == 'full_name') {
                $value = $rowData['first_name'] . ' ' . $rowData['last_name'];
            } elseif ($fieldName == 'age') {
                $dateOfBirth = new DateTime($rowData['birthday']);
                $dateInterval = $dateOfBirth->diff(new DateTime());
                $value = $dateInterval->format('%y');
            }
        }

// client-side event

// OnCalculateControlValues event body
 editors['full_name'].setValue(editors['first_name'].getValue() + ' ' + editors['last_name'].getValue());
            if (editors['birthday'].getValue()) {
                require(['moment'], function(moment) {
                    editors['age'].setValue(moment().diff(editors['birthday'].getValue(), 'years'));
                });
            }


 
Actions First Name Last Name Full Name Birthday Age
Patrick Smith Patrick Smith 1997-05-01 28
Timo Wittman Timo Wittman 1986-10-12 38
Linda Madson Linda Madson 1960-10-04 64
Ben Jones Ben Jones 1999-12-24 25
Anne Brown Anne Brown 1980-08-01 44
Paul Davis Paul Davis 1977-02-23 48
Maria Kerber Maria Kerber 1971-04-08 54
Rebecca Taylor Rebecca Taylor 1991-08-15 33
Terry Moore Terry Moore 1986-02-20 39
James Goodridge James Goodridge 1952-09-02 72
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