Suppress url from biblatex newspaper articles exported from Zotero

Question

I am using Zotero + Better BibTex and using the biblatex package to generate a bibliography in APA citation style. I want to exclude url and urldate from academic journal @articles but retain them for newspaper @articles. I have been successful in suppressing urls from ALL articles using the code found here, but I do not see how to add entrysubtype fields to items in Zotero so that I can exclude urls from academic articles alone. Is there a way to enter entrysubtype in Zotero, or is there some other LaTex hack I can use based on an existing @article field?

Answer 1

If you use entrysubtype = {newspaper} for those @articles from a newspaper,

@article{frie2002,
  author  = {Jonathan Friedland},
  title   = {Across the Divide},
  journal = {Guardian}, 
  pages   = {10-11},
  date    = {2002-01-15},
  entrysubtype = {newspaper},
  url     = {https://www.theguardian.com/uk},
  urldate = {2016-09-16},
}

you only need

\AtEveryBibitem{%
  \ifboolexpr{test {\ifentrytype{article}} and not test {\iffieldequalstr{entrysubtype}{newspaper}}}
    {\clearfield{url}%
     \clearfield{urlyear}}
    {}%
}

to delete the url and urldate for non-newspaper @articles.

biblatex-apa, however, also has a @newsarticle entry type

@newsarticle{frie2002,
  author    = {Jonathan Friedland},
  title     = {Across the Divide},
  newspaper = {Guardian}, 
  pages     = {10-11},
  date      = {2002-01-15},
  url       = {https://www.theguardian.com/uk},
  urldate   = {2016-09-16},
}

in which case you want

\AtEveryBibitem{%
  \ifentrytype{newsarticle}
    {\clearfield{url}%
     \clearfield{urlyear}}
    {}%
}