Code: How to check if an object exists in the model?

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George C2 asked Aug 07 2019 at 6:17 PM George C2 commented Aug 08 2019 at 11:49 AM

Code: How to check if an object exists in the model?

Goal: So I would like to check if a specific object with a specific name exists in the current model.

Q: How would I write an IF statement within a process flow custom code to query such a thing?

Current Code:

if(model().find("Operator1").first){
    //Do something
}else{
    //Do something else
}

> Do I need to make the "model().find..." part == #, NULL, or something else?

Software Version:

FlexSim 19.1.0

code model object exist

______

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Answer 1 · 2019-08-07T19:46:31Z

Jacob Gillespie answered Aug 07 2019 at 7:46 PM George C2 commented Aug 08 2019 at 11:49 AM

Your current code should work fine.

There are only certain situations when you need to use objectexists(). Use it whenever you are using a non dot-syntax command which returns a node. For example:

if(objectexists(node("Operator1", model()))){
    //Do something
}else{
    //Do something else
}

--

If you are asking how to first check if Operator1 exists you can do this:

if(Model.find("Operator1") && Model.find("Operator1").first){
    //Do something
}else{
    //Do something else
}

Or this:

if(Model.find("Operator1")?.first){
    //Do something
}else{
    //Do something else
}

· 1

Answer 2 · 2019-08-07T19:06:53Z

Aaron C answered Aug 07 2019 at 7:06 PM

Try:
if(objectexists(Model.find("NameOfObject")))
{
// Do Something
}

Answer 3 · 2019-08-07T19:03:52Z

José Antonio MD answered Aug 07 2019 at 7:03 PM

Hello @George C2,

FlexSim has a specific function for that:

objectexists()

Its value will be 1 if it exists in your model and 0 if not..

I hope I've been helpful.

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