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NextID ( valueList ; start )

Returns the lowest NOT used number of a value list.

  Average rating: 3.9 (42 votes) Log in to vote

Daniele Raybaudi - Show more from this author ACI http://www.aci.it

  Function definition: (Copy & paste into FileMaker's Edit Custom Function window)

/* NextID ( valueList ; start ) custom function Author: Daniele Raybaudi Parameter: valueList - list of numbers start - number from wich to start the progression Returns the lowest NOT used number of a value list. So: NextID ( 1¶2¶3¶4 ; 1 ) returns: 5 NextID ( 4¶6¶8¶9 ; 1 ) returns: 1 NextID ( "" ; 1 ) returns: 1 I used this CF to automatically recover the progression of an auto-entered number, when a record is deleted. Simply make: 1) a value list ( "IDs" ) with values coming from the field 2) enter this calc into the option for auto-enter a value in the field: NextID ( ValueListItems ( Get ( FileName ) ; "IDs" ) ; 1 ) */ Let([ first = GetAsNumber ( LeftWords ( valueList ; 1 ) ) ; nextList = RightWords ( valueList ; WordCount ( valueList ) - 1 ) ; last = GetAsNumber ( RightWords ( valueList ; 1 ) ) ]; Case ( IsEmpty ( last ) ; start ; last + 1 - start > ValueCount ( valueList ) and start < first ; start ; last + 1 - start > ValueCount ( valueList ) ; NextID ( nextList ; start + 1) ; last + 1 ) ) Click to copy

NextID ( valueList ; start ) custom function

Author: Daniele Raybaudi

Parameter:
valueList - list of numbers
start - number from wich to start the progression

Returns the lowest NOT used number of a value list.
So:
NextID ( 1¶2¶3¶4 ; 1 ) returns: 5
NextID ( 4¶6¶8¶9 ; 1 ) returns: 1
NextID ( "" ; 1 ) returns: 1

I used this CF to automatically recover the progression of an auto-entered number, when a record is deleted.
Simply make:
1) a value list ( "IDs" ) with values coming from the field
2) enter this calc into the option for auto-enter a value in the field:
NextID ( ValueListItems ( Get ( FileName ) ; "IDs" ) ; 1 )

BTW: try the free demo file at:
http://fmforums.com/forum/showpost.php?post/233683/

 

Comments

		Heidi, Mechanicsburg PA Feb 12, 2010
THANK YOU! This is EXACTLY what I was looking for!

		Simon Plint, Newcastle/Australia Mar 21, 2010
Ditto

		lloop, Vienna, Austria Nov 25, 2010
Ditto (Ditto + 1)

		matrix2012, italy Mar 19, 2012
La funzione e bellissima, purtroppo, se "duplico" un record, il nr. progressivo non si aggiorna, lo stesso errore, si evidenzia se importi dati da un'altro file. Mi farebbe piacere sapere se è possibile un intervento di rettifica in modo da farla funzionare anche con i due errori suddetti.

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