biblatex and German juristic commentaries

Question

I need to get my manuscript ready for my publisher, and can't seem to get a few things fixed with biblatex. I'm using biblatex with the biblatex-juradiss style together with jurabook as a document class. The publisher wants to have a certain kind of publication in German jurisprudence, commentaries, to be typeset like this:

MK-StGB-Author Edition § X Rn. Y

"MK-StGB" is the shorttitle, and § X Rn. Y are the references. Commentaries have multiple authors that comment on different parts of a law codex. Therefore I need to pass over the respective authors in the reference.

Here my code with an example:

\documentclass[twoside,compact,centeredpartsintoc,a4paper,fncontinued,12pt]{jurabook}
\usepackage[applemac]{inputenc} % Mac-Kodierung. Achtung: ≠ UTF-8
\usepackage[T1]{fontenc} % Damit Trennung besser klappen
\usepackage[ngerman]{babel} % Deutsche Sprache
\usepackage{graphicx} % Zum Einbinden von Grafiken
\usepackage{soul} % Kapitälchen. Achtung: Bei UTF-8 -> soulutf8
\usepackage{times} % Ach ja, die Times
\usepackage{eurosym}
\setjbookstyle{partintro}{\LARGE}
\setjbookstyle{part}{\LARGE}
\usepackage[hang]{footmisc}
\usepackage{parskip}
\setlength{\parindent}{0pt}
\setlength{\parskip}{1ex}
\usepackage{textcomp} 
\usepackage[left=2.5cm,right=2.5cm,top=2cm,bottom=2.4cm,paper=a4paper]{geometry}
\usepackage{csquotes}
\usepackage[backend=bibtex8,
uniquename=true,
sorting=nyvt,
sortcites=true,
maxnames=3,
idemtracker=false,
ibidtracker=false,
useprefix=false, %von an (true) oder aus (false)
style=biblatex-juradiss,safeinputenc]{biblatex}
\bibliography{Literatur}
%\include{anpassungen_verlag} % Die Anpassungen für den Verlag
\begin{document}
Dies zielt normhistorisch wohl darauf ab, klarzustellen, dass kein Unternehmen
außerhalb des Anwendungsbereichs von Abs. 2 steht.\footnote{Siehe hierzu
\cite[Radtke][§ 14 Rn. 88]{mueko:band1}.}
\end{document}

And this is the commentary:

@commentary{mueko:band1,
    Date-Added = {2009-10-28 09:12:21 +0100},
    Date-Modified = {2013-03-07 08:07:59 +0000},
    Edition = {2},
    Editor = {Heintschel-Heinegg, Bernd},
    Howcited = {MK-StGB-Bearbeiter},
    Publisher = {C.H. Beck},
    Shorttitle = {MK-StGB},
    Title = {M{\"u}nchener Kommentar zum Strafgesetzbuch},
    Volumetitle = {1 ({\S}{\S} 1-37)},
    Year = {2011}}

I don't get "Radtke" to appear behind the title, as I pass it over to biblatex in the prenote field. Can I somehow suppress the prenote field before the reference and put it behind the short title? Morevover, I don't seem to be able to get rid of all the commas after the author. Can anybody help or somehow put me on the right track? Thanks so much in advance!

Answer 1

Typically one can make entrytype-specific changes to existing citation commands via the \AtEveryCitekey hook. Unfortunately for your case this is too late because the hook is executed after any prenote is printed.

To get around this you can redefine the prenote bibliography macro. It appears that the juradiss style uses the default definition from biblatex.def:

\newbibmacro*{prenote}{%
  \iffieldundef{prenote}
    {}
    {\printfield{prenote}%
     \setunit{\prenotedelim}}}

Non-ibidem citation labels for @commentary entries are specified by the cite:title bibliography macro, which can be locally redefined to obtain the desired output. For an example add the following to your preamble:

\renewbibmacro{prenote}{%
  \ifentrytype{commentary}
    {\renewcommand*{\postnotedelim}{\addspace}%
     \renewbibmacro*{cite:title}{%
       \printfield{labeltitle}%
       \setunit*{\textendash}%
       \printfield[emph]{prenote}%
       \setunit{\addspace}%
       \printfield{edition}}}
    {\iffieldundef{prenote}
       {}
       {\printfield{prenote}%
        \setunit{\prenotedelim}}}}