MobileRead Forums - View Single Post - Template function to convert ISBN-10s

ownedbycats · 12-11-2022, 09:06 AM

Thanks.

When trying to get the new ISBN back into the identifiers field, I tried this:

Code:

program: 

	isbn = columnupdate_identifier_isbnconvert();
	
	newisbn = strcat('isbn:', isbn);

	list_union($identifiers, newisbn, ',')

Template tester shows it producing a result of
isbn:9780690042399, goodreads:2152001, isbn:0690042396

However, actually running it fails, I think because the identifiers field won't accept the isbn value when one already exists. What would be the best option for either

a) instead of list_union, replacing the ISBN;
b) removing the existing ISBN before doing the list_union?

I thought list_re should work, but I'm having trouble with the syntax.

12-11-2022, 09:06 AM	#5
ownedbycats Custom User Title Posts: 11,082 Karma: 76037135 Join Date: Oct 2018 Location: Canada Device: Kobo Libra H2O, formerly Aura HD	Thanks. When trying to get the new ISBN back into the identifiers field, I tried this: Code: program: isbn = columnupdate_identifier_isbnconvert(); newisbn = strcat('isbn:', isbn); list_union($identifiers, newisbn, ',') Template tester shows it producing a result of isbn:9780690042399, goodreads:2152001, isbn:0690042396 However, actually running it fails, I think because the identifiers field won't accept the isbn value when one already exists. What would be the best option for either a) instead of list_union, replacing the ISBN; b) removing the existing ISBN before doing the list_union? I thought list_re should work, but I'm having trouble with the syntax. Last edited by ownedbycats; 12-11-2022 at 09:54 AM.