Brian Dunning's FileMaker Custom Functions

IsValidJSON ( JSON )

Used to determine if we are passing valid JSON

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Kyle Williams   Kyle Williams - Show more from this author
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  Sample input:
IsValidJSON( "Random Text" )
  Sample output:
0

  Function definition: (Copy & paste into FileMaker's Edit Custom Function window)

Used to determine if we are passing valid JSON
Produces a Boolean Value..

I find this function useful when I'm trying to convert scripts with old parameters to utilize JSON scripting so that none of the old scripts break during the transition process:

IF[ IsValidJSON( Get(ScriptParameter)) ]
//create variables using new JSON scripting
ELSE
//continue with old GetValue( Get(ScriptParameter), 1 ) variables
END IF

 

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