How to get linkable titles in all entries in which a url is provided?

Question

I want the titles of every entry in my bibliography to have links to their respective urls if and only if some url is provided, while keeping urls out of sight. I have found this and this other similar questions, on whose answers I have based my approach. Unfortunately, I can't get the desired result. See the following MWE:

\documentclass{article}
\usepackage[url=false]{biblatex}
\usepackage[colorlinks]{hyperref}
\newbibmacro{string+doi}[1]{%
  \iffieldundef{url}{#1}{\href{\thefield{url}}{#1}}}
\DeclareFieldFormat{title}{\usebibmacro{string+doi}{\mkbibemph{#1}}}
\DeclareFieldFormat[article]{title}{\usebibmacro{string+doi}{\mkbibquote{#1}}}
\begin{filecontents}{\jobname.bib}
@article{A01,
  author = {Author, A.},
  year = {2001},
  title = {Alpha},
  url = {http://tex.stackexchange.com/}
}
@book{B02,
  author = {Buthor, B.},
  year = {2002},
  title = {Bravo},
  url = {http://tex.stackexchange.com/},
}
@incollection{C03,
  author = {Cuthor, C.},
  year = {2003},
  title = {Charlie},
  url = {http://tex.stackexchange.com/},
}
@phdthesis{D04,
  author = {Duthor, D.},
  year = {2004},
  title = {Delta},
  url = {http://tex.stackexchange.com/},
}
\end{filecontents}
\addbibresource{\jobname.bib}
\nocite{*}
\begin{document}
\printbibliography
\end{document}

As you can see in the schreenshot below, the problem is that the entry types other than @book @article do not get linkeable titles despite a url being provided. How can I get the desired effect bot only for the @book and @article classes but for @incollection, @phdthesis and @inbook classes too?

Thank you all!

Simon Dispa · Answer 1 · 2022-09-21T19:40:33.290

Adding

\DeclareFieldFormat[incollection]{title}{\usebibmacro{string+doi}{\mkbibquote{#1}}} 
\DeclareFieldFormat[thesis]{title}{\usebibmacro{string+doi}{\mkbibquote{#1}}}%
\DeclareFieldFormat[inbook]{title}{\usebibmacro{string+doi}{\mkbibquote{#1}}}

(or \DeclareFieldFormat[incollection,thesis, inbook]{title}{\usebibmacro{string+doi}{\mkbibquote{#1}}})

and changing the before the last reference to

@thesis{D04,
        author = {Duthor, D.},
        type   = {phdthesis},
        year = {2004},
        title = {Delta},
        url = {http://tex.stackexchange.com/},          
    }

\documentclass{article}
\usepackage[url=false]{biblatex}

\usepackage[colorlinks]{hyperref}
\newbibmacro{string+doi}[1]{%
    \iffieldundef{url}{#1}{\href{\thefield{url}}{#1}}}
\DeclareFieldFormat{title}{\usebibmacro{string+doi}{\mkbibemph{#1}}}
\DeclareFieldFormat[article]{title}{\usebibmacro{string+doi}{\mkbibquote{#1}}}
\DeclareFieldFormat[incollection]{title}{\usebibmacro{string+doi}{\mkbibquote{#1}}} % added
\DeclareFieldFormat[thesis]{title}{\usebibmacro{string+doi}{\mkbibquote{#1}}}% added
\DeclareFieldFormat[inbook]{title}{\usebibmacro{string+doi}{\mkbibquote{#1}}}% added
\begin{filecontents}[overwrite]{\jobname.bib}
    @article{A01,
        author = {Author, A.},
        year = {2001},
        title = {Alpha},
        url = {http://tex.stackexchange.com/}
    }
    @book{B02,
        author = {Buthor, B.},
        year = {2002},
        title = {Bravo},
        url = {http://tex.stackexchange.com/},
    }
    @incollection{C03,
        author = {Cuthor, C.},
        year = {2003},
        title = {Charlie},
        booktitle     = "Fiber Optic Test and Measurement",
        url = {http://tex.stackexchange.com/},
    }
    @thesis{D04,
        author = {Duthor, D.},
        type   = {phdthesis},
        year = {2004},
        title = {Delta},
        url = {http://tex.stackexchange.com/},

    }
@inbook{E05,
    author        = &quot;H. E. Rose&quot;,
    title         = &quot;A Course in Number Theory&quot;,
    publisher     = &quot;Oxford Univ. Press&quot;,
    address       = &quot;New York, NY&quot;,
    year          = &quot;1988&quot;,
    url = {http://tex.stackexchange.com/},
    chapter       = &quot;3&quot;
}


\end{filecontents}
\addbibresource{\jobname.bib}
\nocite{*}
\begin{document}
\printbibliography


\end{document}

The last reference taken from biblatex-examples.bib

score 1 · Accepted Answer · answered Sep 21 '22 at 19:48

The default title formats are (see biblatex.def, ll. 579-585 in v3.18)

\DeclareFieldFormat{title}{\mkbibemph{#1}}
\DeclareFieldFormat
  [article,inbook,incollection,inproceedings,patent,thesis,unpublished]
  {title}{\mkbibquote{#1\isdot}}
\DeclareFieldFormat
  [suppbook,suppcollection,suppperiodical]
  {title}{#1}

In order to replicate them with linking you want

\documentclass{article}
\usepackage[url=false]{biblatex}
\usepackage[colorlinks]{hyperref}
\newbibmacro{string+doi}[1]{%
  \iffieldundef{url}{#1}{\href{\thefield{url}}{#1}}}
\DeclareFieldFormat{title}{\usebibmacro{string+doi}{\mkbibemph{#1}}}
\DeclareFieldFormat
  [article,inbook,incollection,inproceedings,patent,thesis,unpublished]
  {title}{\usebibmacro{string+doi}{\mkbibquote{#1\isdot}}}
\DeclareFieldFormat
  [suppbook,suppcollection,suppperiodical]
  {title}{\usebibmacro{string+doi}{#1}}
\begin{filecontents}{\jobname.bib}
@article{A01,
  author = {Author, A.},
  year = {2001},
  title = {Alpha},
  url = {http://tex.stackexchange.com/}
}
@book{B02,
  author = {Buthor, B.},
  year = {2002},
  title = {Bravo},
  url = {http://tex.stackexchange.com/},
}
@incollection{C03,
  author = {Cuthor, C.},
  year = {2003},
  title = {Charlie},
  url = {http://tex.stackexchange.com/},
}
@phdthesis{D04,
  author = {Duthor, D.},
  year = {2004},
  title = {Delta},
  url = {http://tex.stackexchange.com/},
}
\end{filecontents}
\addbibresource{\jobname.bib}
\nocite{*}
\begin{document}
\printbibliography
\end{document}

How to get linkable titles in all entries in which a url is provided?

2 Answers2