Input special characters between field values

[Fabian]

Hi, how can I write a rule that will input " | " between values? There will be 15 fields available to use, but not all fields are used all the time. So an example would be:

 

Field1 | Field2 | Field3

or

Field1 | Field2 | Field3 | Field4 | Field5 | Field6

or

Field1

[step]

return [
 Field('Field1'),
 Field('Field2'),
 Field('Field3'),
 Field('Field4'),
 Field('Field5'),
 Field('Field6'),
 Field('Field7'),
 Field('Field8'),
 Field('Field9'),
 Field('Field10'),
 Field('Field11'),
 Field('Field12'),
 Field('Field13'),
 Field('Field14'),
 Field('Field15')
].filter(String).join(' | ');

 

Or if your fields are really named "Field" + number, you could create the array with a for loop:

var fields = [];
for (var i = 1; i <= 15; i++) 
 fields.push(Field("Field" + i));
return fields.filter(String).join(' | ');

 

The '.filter(String)' method removes any elements in the array that aren't strings – any fields that aren't used. The '.join(" | ")' method joins the remaining elements in the array with a space, a pipe and a space.