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 FileMaker Pro Custom Functions

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CreateVariables ( text )

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  Average rating: 4.2  (33 votes)
  Discuss this Custom Function

Chris Bartlett, .

Create variables from a text string like "Name=Jai;Age=1"

Sample Input:
CreateVariables ( Get ( ScriptParameter ) )

For this example the script parameter is "Name=Jai;Age=1"
Sample Output:
$Name="Jai";$Age="1"


 Then copy & paste into FileMaker Advanced's Edit Custom Function window.

Click here to copy To Clip Manager if you have myFMbutler's Clip Manager installed

Description:

This custom function generates local variables from a text string without any prior knowledge of what those variables might be.

Passing named parameters into a script is a useful way of passing in more than one value. Other methods of doing this require the named parameters to be parsed out one by one or they use global variables that should then be cleared at the end of a script. This method requires a single script step and simply-formatted input string (such as a script parameter).

An input string needs to be in name=value pairs, delimited by semi-colons; e.g., "Name=Jai;Age=1"
(Note: not "Name=\"Jai\";Age=\"1\"")

At the top of a script, have a script step that uses the custom function to create the variables:
Set Variable [$Parameters ; Value: CreateVariables ( Get ( ScriptParameter ) ) ]
The variable $Parameters is just a dummy and serves no purpose other than to call the custom function.

The custom function does two key things:
1. It adds the required formatting to the string - e.g., "Name=Jai;Age=1" becomes "$Name=\"Jai\";$Age=\"1\""
2. It uses Evaluate() and Let() to actually create the variables $Name and $Age and give them the specified values.

Note: these functions are not guaranteed or supported by BrianDunning.com. Please contact the individual developer with any questions or problems.

This is my Custom Function and I want to edit it

Discuss:

This is a great CF to parse named subparameters. I extended the substitutions to allow single spaces around the "=" and the ";" -- including inadvertently imbalanced ones, such as " ="...

[ " = " ; "=" ] ; [ "= " ; "=" ] ; [ " =" ; "=" ] ; [ "=" ; "=\"" ] ; [ " ; " ; ";" ] ; [ " ;" ; ";" ] ; [ "; " ; ";" ] ; [ ";" ; "\";$" ]

FWIW,
Kevin

Kevin Frank, Arcata, California
April 16, 2011 10:24am

If there are quotes in the input text, they need to be escaped.
Add this substitution to take care of this.
[ "\"" ; "\\\"" ]

Johan Sölve, Sweden
August 12, 2014 12:05am

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