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Comparing Embedded Fields in Survey Flow Branch Logic

  • 19 January 2021
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Rob__B
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Hi All!
I'm kind of stuck trying to compare two embedded fields in survey flow using branch logic. I suspect it may not be working because one embedded field is string and the other date. We use some JavaScript to convert the separation date into a month number string-type variable called sep_Month. Ultimately comparing current month (date) to separation month (string), then using branch logic to add 12 to current month if it is less than separation month. We then use a math operation to compare the two and end survey if greater than three months difference (kind of expiring the link).
Example of what is happening: Current month is '01' and separation month is '9'. Math produces '-8' (01 - 9 = -8), but with the +12 part in place we think the math should be producing '4' (13 - 9 = 4).
Any help on why this is not working at the 'add 12' part and/or how to correct would be most appreciated!
image.pngIt may be the JavaScript that is wrong, since I'm trying to reverse engineer off Google...
image.png
Thank you!
Rob

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Best answer by ahmedA 22 January 2021, 13:42

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A
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Hi Rob__B I'm not entirely sure regarding the question as there are too many details in it, however, this is what I got and the solution below is based on the same.
You have the following variables:

  • Separation month 
    Sep_Month
    which is in the form of a string (Jan, Feb etc.)

  • Today's month in the form of an integer (1,2 etc.)

  • You want to compare the two and perform some branch logic based on the difference.

Here's how I would go about it:
// Function to convert Month string to Month number
function getMonthFromString(mon){
    var d = Date.parse(mon + "1, 2020");
    if(!isNaN(d)){
       return new Date(d).getMonth() + 1;
    }
    return -1;
  }

today_month = Number("${date://CurrentDate/m}");
sep_month_int = getMonthFromString("${e://Field/Sep_Month}");

diff_month = (today_month - sep_month_int) > 0 ? (today_month - sep_month_int) : (today_month - sep_month_int + 12);


You can then store 
diff_moth
as an embedded data to perform the required operations.

Rob__B
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Userlevel 3
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Thanks so much ahmedA! I like just having the process in the code then using diff_month as the embedded field in the survey flow. Most appreciated.

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