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  #1  
Old February 22nd, 2016, 12:20 PM
LyndaEngelage LyndaEngelage is offline
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Join Date: Sep 2014
Posts: 26
Arrow Suppress Empty variables

I'm an extreme novice at scripting. But I need a rule to suppress the line if ALL variables are empty. The following is a script I'm trying out. I need the following format to happen: "Mem_Lastname", "Mem_Firstname" "Mem_MiddleInit"

Example: Doe, Joe C

(I need the comma inserted between the Mem_Lastname and Mem_First name fields.)
I need the whole line suppressed if all the fields are empty, not just one, including the comma.

Here's the script I have so far.


return [Trim(Field("Mem_Lastname")),Trim(Field("Mem_Firstn ame")),Trim(Field("Mem_MiddleInit"))].filter(String).join(" ");
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Old February 22nd, 2016, 01:40 PM
step's Avatar
step step is offline
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Location: Charlotte, NC
Posts: 955
Default Re: Suppress Empty variables

Quote:
Originally Posted by LyndaEngelage View Post
Here's the script I have so far.
Code:
return [Trim(Field("Mem_Lastname")),Trim(Field("Mem_Firstname")),Trim(Field("Mem_MiddleInit"))].filter(String).join(" ");
One nice thing about the filter method is that you can pass it a callback function to determine whether to remove the element from the array or not. For example, if you wanted to include the comma as part of the first element in your array (the lastname field), you could write a function to filter the elements if they are not strings or if the string is only a comma indicating that the last name field is empty:
Code:
return [
  Trim(Field("Mem_Lastname")) + ',',
  Trim(Field("Mem_Firstname")),
  Trim(Field("Mem_MiddleInit"))
].filter(function(s){ 
    return s.replace(',', '');
  }).join(' ');
Using the .map method would allow you to perform a function on each element of the array. This is helpful in situations that you might find yourself being repetitive in your code – with the Trim function for example. You could also add the comma to the first element of your array within that function like this:
Code:
return [
  Field("Mem_Lastname"),
  Field("Mem_Firstname"),
  Field("Mem_MiddleInit")
].map(function(s,p) {
  return Trim(s) ? Trim(s) + (!p ? ',' : '') : '';
}).filter(String).join(' ');
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  #3  
Old February 23rd, 2016, 10:21 AM
Dan Korn's Avatar
Dan Korn Dan Korn is offline
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Join Date: Aug 2008
Location: Chicago, IL
Posts: 4,408
Default Re: Suppress Empty variables

This should work:
Code:
return Trim([Field("Mem_Lastname"), Field("Mem_Firstname")].join(' ,') + ' ' + Field("Mem_MiddleInit"));
Then apply "Suppress if empty" to the line calling out the rule.
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  #4  
Old February 24th, 2016, 09:15 AM
tou tou is offline
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Join Date: Oct 2015
Posts: 107
Default Re: Suppress Empty variables

I think the drop down options works great in GUI paragraph settings. It's dependent the the variables instead of the lines.
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File Type: png 2016-02-24 09_51_57-Paragraph Formatting.png (42.3 KB, 18 views)
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