Hi m.s.
this will change blanks with regex:
Code:
re(field('series'), '\s', '+')
Edit:
If you want to use it in a custom column, make it via program mode:
Code:
program:
suchtext=re(field('series'), '\s', '+');
suchtext=re(suchtext, '\&', '%26');
strcat('<a href=','https://www.goodreads.com/search?utf8=%E2%9C%93&q=',suchtext,'&search_type=books','">Find on Goodreads</a>')
Column type: "Column build from other columns"
and if you want to use it in book details as clickable value check "Show as HTML in Book details" (maybe hit visibility as column).