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thomasm0013
thomasm0013
October 29, 2022
Solved

How to process an event only when value changed (to a target value) within an interface?

  • October 29, 2022
  • 4 replies
  • 1 view

Hello,

I want an event to happen (send email) after submitting a user interface (form) only if a certain attribute has been changed. I figured that I would need the old and the new value of this attribute in the process.

What would be a good way to achieve this?

Thank you in advance

    Best answer by stefanhelzle0001

    The trick here is that you will need to save the old value in a local variable set to never refresh. Then you can compare that to the new value. I suggest to put that logic into the saveInto of the submit button. Store that result into a boolean which then controls the process.

    4 replies

    gopalk2865
    gopalk2865
    Participating Frequently
    October 29, 2022

    hi thomas, you can have a boolean variable which will have true or false when a attribute gets changed , based on this variable you can design your process flow.

    stefanhelzle0001
    stefanhelzle0001Answer
    Brainy
    October 29, 2022

    The trick here is that you will need to save the old value in a local variable set to never refresh. Then you can compare that to the new value. I suggest to put that logic into the saveInto of the submit button. Store that result into a boolean which then controls the process.

      thomasm0013
      thomasm0013Author
      October 29, 2022

      Hello [mention:d73323f9e5264d25a54faa44f3172834:e9ed411860ed4f2ba0265705b8793d05], Hello [mention:126a676c85024855948336691b0a7b92:e9ed411860ed4f2ba0265705b8793d05],

      thank you for your suggestions.

      I was able to achieve my goal doing the following:

      • Interface
        • new rule input valueChanged as Boolean
        • local variable oldValue set to the value I want to monitor by using a!refreshVariable(value: ri![MY_VALUE], refreshOnReferencedVarChange: false)
        • Submit-Button saveInto: a!save(ri!valueChanged, if(local!oldValue<>ri![MY_VALUE], TRUE, FALSE))
      • Process
        • add process variable (and assign it to the rule input)
        • add process logic accordingly

      KR
      Thomas

      stefanhelzle0001
      stefanhelzle0001
      Brainy
      October 29, 2022

      Great to hear that you get this working. A small hint:

      if(local!oldValue<>ri![MY_VALUE], TRUE, FALSE))

      can be replaced by

      local!oldValue<>ri![MY_VALUE]

      as a comparison always evaluates to a boolean result.

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