biblatex cite urls only if no page number is present

Question

Analogous to this question, is there a way to show urls only for those references that do not have pages?

In my bibliography I have a number of articles or reviews where I keep the url field to know which website I got a given pdf from, but the pdf is a regularly published article, so it has page numbers, hence the url information is redundant. However, I also have some @articles from regular online journals and therefore not of the @online type, but that don't have pages where I would need to keep the url.

In short, I don't want to eliminate urls globally or per bibtex type, but rather have some if-then function do it for me based on whether or not the pages field is empty.

EDIT: It would also be great to accomplish the same for doi and urldate fields, i.e., suppress these too if page numbers are present.

Following the solution here one could do:

\documentclass{article}
\usepackage{filecontents}
\usepackage{biblatex}

\DeclareSourcemap{
  \maps[datatype=bibtex]{
    \map{
      \step[fieldsource=pages,final]
      \step[fieldset=url,null]
    }  
  }
}

\usepackage{filecontents}
\begin{filecontents}{\jobname.bib}
@article{test1,
  author = {Antelope, Alfred},
  year = {2010},
  title = {A Title},
  url = {www.url.com},
  urldate = {2015-05-05},  
  journal = {Journal},
  volume = {1},
  number = {2},
  pages = {3--15}
}
@article{test2,
  author = {Bee, Ben},
  year = {2011},
  title = {Best Title},
  url = {www.url.com},
  urldate = {2015-05-05},  
  journal = {Journal},
  volume = {1},
  number = {2}
}
\end{filecontents}
\addbibresource{\jobname.bib}
\begin{document}
\nocite{*}
\printbibliography
\end{document}

... but it still always prints the urldate and, if present, also the doi field. Maybe someone knows a better solution?

Answer 1

You can extend your sourcemapping a bit to also delete dois and urldate, if pages are present.

\DeclareSourcemap{
  \maps[datatype=bibtex]{
    \map{
      \step[fieldsource=pages,final]
      \step[fieldset=url,null]
      \step[fieldset=urldate,null]
      \step[fieldset=doi,null]
    }  
  }
}

With standard biblatex styles you could alternatively use

\renewbibmacro*{doi+eprint+url}{%
  \iffieldundef{pages}
    {\iftoggle{bbx:doi}
       {\printfield{doi}}
       {}%
     \newunit\newblock
     \iftoggle{bbx:eprint}
       {\usebibmacro{eprint}}
       {}%
     \newunit\newblock
     \iftoggle{bbx:url}
       {\usebibmacro{url+urldate}}
      {}}
    {}}

For biblatex-chicago's authordate the modification is

\renewbibmacro*{bib+doi+url}{% 16th ed.
  \iffieldundef{pages}
    {\ifthenelse{\iffieldundef{urlyear}\AND\iffieldundef{urlmonth}}%
       {}%
       {\printurldate}% Date fix
     \iffieldundef{addendum}%
       {\newunit\newblock}%
       {\newcunit\newblock}%
     \iftoggle{cms@doionly}%
       {\iffieldundef{doi}%
          {}%
          {\printfield{doi}%
           \setunit*{\addperiod\addspace}\newblock%
           \clearfield{url}}}%
       {\ifboolexpr{%
          togl {cms@doi}%
          and
          not test {\iffieldundef{doi}}%
        }%
          {\printfield{doi}%
           \setunit*{\addperiod\addspace}\newblock}%
          {}}%
     \ifboolexpr{%
       togl {cms@eprint}%
       and
       not test {\iffieldundef{eprint}}%
     }%
       {\usebibmacro{eprint}%
        \setunit*{\addperiod\addspace}\newblock}%
       {}%
     \ifboolexpr{%
       togl {cms@url}%
       and
       not test {\iffieldundef{url}}%
     }%
       {\printfield{url}}%
       {}}
    {}}%