CalculatedColumn Process
Set calculated column together with its meta
| name | hour_rate | working_hours |
|
John |
$20/hrs |
123 hrs |
|
Marry |
$30/hrs |
112 hrs |
|
Peter |
$25/hrs |
132 hrs |
|
Donald |
$40/hrs |
89 hrs |
->pipe(new CalculatedColumn(array(
"total_meta"=>array(
"exp"=>"{hour_rate}*{working_hours}",
"type"=>"number",
"decimals" => 4,
"prefix"=>'$'
)
)))
| name | hour_rate | working_hours | total_meta |
|
John |
$20/hrs |
123 hrs |
$2,460.0000 |
|
Marry |
$30/hrs |
112 hrs |
$3,360.0000 |
|
Peter |
$25/hrs |
132 hrs |
$3,300.0000 |
|
Donald |
$40/hrs |
89 hrs |
$3,560.0000 |
The example demonstrates usage of `CalculatedColumn` process. The CalculatedColumn process creates new column and use formula to create value. As you may see there are two ways to enter formula. You can define formula in string and wrapped field name in bracket `"{hour_rate}*{working_hours}"`. Second option, you can define your own custom function to calculate value as you see the `"total_by_func"` in above example.