Evaluate Expression

Christopher Wiebke

October 05, 2022 16:05

I am trying to use logic like =IF(a == b, true, false) in the evaluate expression activity, but keep getting an error that  states IF is not a function.  What is the correct syntax in workflow?  Or if this is not possible in workflow, how do a declare a new value for a variable that already exists in the workflow?

Thanks,

Chris.   

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  chris c

  October 05, 2022 17:11

  The Evaluate Expression does the true or false as the result from the expression evaluation.

  All you need is: =$varA == $varB

  Then call $evaluate1.result to find if true or false

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  Zack Robison

  October 05, 2022 17:17

  I use ternary operators: <conditional> ? <expression if true> : <expression if false>.  

  For example, imagine a form-based data creation WF.  You might use the same WF for editing and creation, with edits prefilling the form with existing data.  You'd probably have a nice boolean variable that determines whether to run that logic, the input expression for a Create Value activity "isEdit" might be

  = $wfInputs.inputs.type == 'edit' ? true : false

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  Christopher Wiebke

  October 05, 2022 18:45

  Zack,

  I must not have gotten my syntax right when I tried this before.  I followed your example and got the evaluate expression to work using the code below.  This is just what I needed!

  Thanks,

  Chris

  = $form1.state.dropDownList2.value === undefined ? $whereClause.result : $whereClause.result.concat(` OR field = ${$form1.state.dropDownList2.value}`

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