If no author use organization or institution

Question

I would like to make some amendments to my entries.

If there is no author, editor or translator, but an institution or organization, this should replace the placement of the author. So it should be at the front, in small caps. This should apply for all types of entries.

Here is my MWE:

\documentclass{scrreprt}
\usepackage[main=ngerman, english]{babel}
\usepackage[babel, german=quotes]{csquotes}
\usepackage[ngerman]{isodate}
\usepackage[ngerman]{datetime}
%----------------------------------------------------------------------------
%   BIB
%----------------------------------------------------------------------------
 \usepackage[
    backend=biber,
    style=authoryear,
    sorting=nyvt, 
    maxnames=25,
    dashed=false, 
    isbn=false
  ]{biblatex}
 \addbibresource{library.bib}
\renewcommand{\mkbibnamefamily}[1]{\textsc{#1}}
\renewcommand{\labelnamepunct}{\addcolon\space}
\DeclareFieldFormat{postnote}{#1}
\DeclareFieldFormat{multipostnote}{#1}
\renewcommand\postnotedelim{\addcolon\addspace}
\DeclareFieldFormat
  [article,inbook,incollection,inproceedings,patent,unpublished]
  {title}{#1\isdot}
\DeclareFieldFormat
  [thesis]
  {title}{\mkbibemph{#1}\isdot}  % thesis title italic


% no period after addon titles
\usepackage{xpatch}
\DeclareFieldFormat{titleaddon}{\mkbibbrackets{#1}}
\DeclareDelimFormat{titleaddondelim}{\addspace}
\xpatchbibmacro{title}
  {\printfield{titleaddon}}
  {\setunit{\printdelim{titleaddondelim}}%
   \printfield{titleaddon}}
  {}
  {}
\DeclareFieldFormat{booktitleaddon}{\mkbibbrackets{#1}}
\DeclareDelimFormat{booktitleaddondelim}{\addspace}    
\xpatchbibmacro{booktitle}
  {\printfield{booktitleaddon}}
  {\setunit{\printdelim{titleaddondelim}}%
   \printfield{booktitleaddon}}
  {}
  {}
\DeclareFieldFormat{maintitleaddon}{\mkbibbrackets{#1}}
\DeclareDelimFormat{maintitleaddondelim}{\addspace}  
\xpatchbibmacro{maintitle}
  {\printfield{maintitleaddon}}
  {\setunit{\printdelim{titleaddondelim}}%
   \printfield{maintitleaddon}}
  {}
  {}

\begin{document}
\nocite{*}
\printbibliography[heading=bibintoc,title={Literaturverzeichnis}]
\end{document}

Test Entries:

@article{journal.1981,
 journal = {University Shimbun},
 institution = {Test Institution},
 year = {1981},
 pages = {20},
 location = {Kanagawa},
 note = {Morgenausgabe},
 title = {University Paper Title}
} 

@article{journalb.1981,
     journal = {University Shimbun},
     organization = {Test Organization},
     year = {1981},
     pages = {20},
     location = {Kanagawa},
     note = {Morgenausgabe},
     title = {University Paper Title}
    } 

Current result:

What it should look like:

Thank you for your help!

Answer 1

It will depend on the exact situation and I can't quite tell from the toy example in the question, but in general I recommend to give the organisation/institution in the author (or editor, translator) field if it was involved in authoring (or editing, translating) the work.

It is perfectly acceptable to have "corporate authors" as long as you remember to protect them in curly braces to avoid having their names parsed as personal names. See Using a 'corporate author' in the "author" field of a bibliographic entry (spelling out the name in full).

What matters when you populate the author field is not whether or not the author is a person or a corporate entity. What matters is the role they played in producing the work, their authorship.

Note further that organization and institution are fields not supported by every entry type. In general it is fair to say they are a 'replacement' for publisher where publisher is not fully appropriate. For example for @thesis entries institution or its legacy alias school take exactly the role of publisher. @online entries also have an organization. @reports have an institution. An exception is @(in)proceedings where organization is the organisation organising the conference and publisher the publisher of the conference proceedings. organization and institution are not intended as alternatives for author or editor if they happen to be a corporate entity.

\documentclass{scrreprt}
\usepackage[main=ngerman, english]{babel}
\usepackage[babel, german=quotes]{csquotes}
\usepackage[ngerman]{isodate}
\usepackage[ngerman]{datetime}
%----------------------------------------------------------------------------
%   BIB
%----------------------------------------------------------------------------
 \usepackage[
    backend=biber,
    style=authoryear,
    sorting=nyvt, 
    maxnames=25,
    dashed=false, 
    isbn=false
  ]{biblatex}

\renewcommand{\mkbibnamefamily}[1]{\textsc{#1}}
\renewcommand{\labelnamepunct}{\addcolon\space}
\DeclareFieldFormat{postnote}{#1}
\DeclareFieldFormat{multipostnote}{#1}
\renewcommand\postnotedelim{\addcolon\addspace}
\DeclareFieldFormat
  [article,inbook,incollection,inproceedings,patent,unpublished]
  {title}{#1\isdot}
\DeclareFieldFormat
  [thesis]
  {title}{\mkbibemph{#1}\isdot}  % thesis title italic


% no period after addon titles
\usepackage{xpatch}
\DeclareFieldFormat{titleaddon}{\mkbibbrackets{#1}}
\DeclareDelimFormat{titleaddondelim}{\addspace}
\xpatchbibmacro{title}
  {\printfield{titleaddon}}
  {\setunit{\printdelim{titleaddondelim}}%
   \printfield{titleaddon}}
  {}
  {}
\DeclareFieldFormat{booktitleaddon}{\mkbibbrackets{#1}}
\DeclareDelimFormat{booktitleaddondelim}{\addspace}    
\xpatchbibmacro{booktitle}
  {\printfield{booktitleaddon}}
  {\setunit{\printdelim{titleaddondelim}}%
   \printfield{booktitleaddon}}
  {}
  {}
\DeclareFieldFormat{maintitleaddon}{\mkbibbrackets{#1}}
\DeclareDelimFormat{maintitleaddondelim}{\addspace}  
\xpatchbibmacro{maintitle}
  {\printfield{maintitleaddon}}
  {\setunit{\printdelim{titleaddondelim}}%
   \printfield{maintitleaddon}}
  {}
  {}

\usepackage{filecontents}
\begin{filecontents}{\jobname.bib}
@article{journal.1981,
  journal  = {University Shimbun},
  author   = {{Test Institution}},
  year     = {1981},
  pages    = {20},
  location = {Kanagawa},
  note     = {Morgenausgabe},
  title    = {University Paper Title},
} 

@article{journalb.1981,
  journal  = {University Shimbun},
  author   = {{Test Organization}},
  year     = {1981},
  pages    = {20},
  location = {Kanagawa},
  note     = {Morgenausgabe},
  title    = {University Paper Title}
} 
\end{filecontents}

\addbibresource{\jobname.bib}

\begin{document}
\nocite{*}
\printbibliography[heading=bibintoc,title={Literaturverzeichnis}]
\end{document}