Stop Appian strips leading 000's

Question

I have a requirement to display a numeric sequence in a form of a specific lenght. 
 The sequence can start with leading zeros. The sequence can only be numeric. i.e 001234 
 
 If I use a numeric field to satisfy the second requirement, the numeric field strips out the leading zeros. 
 If I use a text field, then I can't control the user inputting alpha chars as well as numerics. 
 
 Any ideas ?

kevinb0010 · Accepted Answer

The combination of a text field and the cleanwith(ri!text,"0123456789") function should do the trick

dipaki · Answer

Hi pauls0003 , 
 If you have a requirement to allow the user to enter a string of specific length with only numeric characters, you can try using the regex plugin function. See the below example will allow only numeric chars of length 10 
 a!textField( 
 label: "My number", 
 value: local!myNumber, 
 saveInto: local!myNumber, 
 validations: { 
 if(regexmatch("^[0-9]*$",local!myNumber), null,"Accepts only Numeric string"), 
 if(len(local!myNumber)<=10, null, "Accepts 10 or less than 10 characters") 
 } 
 )

niteshtwri · Answer

If you want to restrict user to input only number in the text field you can do the validation as per below: 
 
if( 
 exact(ri!inputData,tostring(cleanwith(ri!inputData,{"0123456789"}))), 
 "Number","Not a Number" 
)

Mike Schmitt · Answer

You actually can control user input in a text field by using a specific saveInto. Such as... 
saveInto: { a!save( ri!myNumber, tointeger(save!value) ) }