Biblatex custom style: Year in parantheses in bibliography but not in text

Question

I used the following custom style to create a bibliography matching the requirements of our institution: Creating a bibliography with fixed indention and authoryear labels using biblatex and biber

It successfully creates a bibliography with labels and intended entries. However, the label looks like this:

author year

This is true for both the in-text citation and the label in bibliography. What I need is

author year     [at position of \parencite]

author (year)     [in bibliography]
         rest of bibliography entry

Answer 1

With biblatex-ext as suggested in the update to Creating a bibliography with fixed indention and authoryear labels using biblatex and biber this is much easier now. You can simply redefine the inner cite delims of bbx@introcite.

\documentclass{article}
\usepackage[T1]{fontenc}
\usepackage[utf8]{inputenc}
\usepackage[british]{babel}
\usepackage{csquotes}
\usepackage[style=ext-authoryear, backend=biber, introcite=label, dashed=false]{biblatex}
\addbibresource{biblatex-examples.bib}

\setlength{\bibitemsep}{0.5\baselineskip plus 0.5\baselineskip}
\setlength{\introcitewidth}{6em}

\DeclareInnerCiteDelims{bbx@introcite}{\bibopenparen}{\bibcloseparen}

\begin{document}
\cite{sigfridsson,worman,geer,knuth:ct:a}
\printbibliography
\end{document}

You only need \usebibmacro{textcite} instead of \usebibmacro{cite} as well as a few tiny modifications for textcite.

The only part that is changed from the other answer to Creating a bibliography with fixed indention and authoryear labels using biblatex and biber is

\newbibmacro{labelwidthbib}{%
  \begingroup
  \DeclareFieldFormat{bibhyperref}{##1}%
  \csuse{blx@hook@cite}%
  \csuse{blx@hook@citekey}%
  \citetrackerfalse\pagetrackerfalse\backtrackerfalse
  \global\undef\cbx@lasthash
  \global\undef\cbx@lastyear
  \defcounter{maxnames}{\blx@maxcitenames}%
  \boolfalse{cbx:parens}%
  \usebibmacro{textcite}%
  \ifbool{cbx:parens}
     {\bibcloseparen\global\boolfalse{cbx:parens}}
     {}%
  \endgroup
} 

In total

\documentclass{article}
\usepackage[T1]{fontenc}
\usepackage[utf8]{inputenc}
\usepackage[british]{babel}
\usepackage{csquotes}
\usepackage[style=authoryear,backend=biber,dashed=false]{biblatex}
\addbibresource{biblatex-examples.bib}

\makeatletter
\setlength{\bibitemsep}{0.5\baselineskip plus 0.5\baselineskip}

\newsavebox\ay@labelbox
\newlength{\labwidthsameline}
\setlength{\labwidthsameline}{6em}

\newbibmacro{labelwidthbib}{%
  \begingroup
  \DeclareFieldFormat{bibhyperref}{##1}%
  \csuse{blx@hook@cite}%
  \csuse{blx@hook@citekey}%
  \citetrackerfalse\pagetrackerfalse\backtrackerfalse
  \global\undef\cbx@lasthash
  \global\undef\cbx@lastyear
  \defcounter{maxnames}{\blx@maxcitenames}%
  \boolfalse{cbx:parens}%
  \usebibmacro{textcite}%
  \ifbool{cbx:parens}
     {\bibcloseparen\global\boolfalse{cbx:parens}}
     {}%
  \endgroup
} 
%-----------------------
\newbibmacro{kicklabel}{% 
  \sbox\ay@labelbox{\usebibmacro{labelwidthbib}}%
  \global\togglefalse{blx@insert}%
  \ifdim\wd\ay@labelbox>\labwidthsameline
    \leavevmode\newline
  \fi
}

\defbibenvironment{bibliography}%
  {\list
    {\usebibmacro{labelwidthbib}}%
    {\setlength{\labelwidth}{\labwidthsameline}%
     \setlength{\leftmargin}{\labelwidth}%
     \setlength{\labelsep}{\biblabelsep}%
     \addtolength{\leftmargin}{\labelsep}%
     \setlength{\itemsep}{\bibitemsep}%
     \setlength{\parsep}{\bibparsep}%
     \renewcommand*{\makelabel}[1]{##1\hss}}}%
  {\endlist}%
  {\item\usebibmacro{kicklabel}}
\makeatother

\begin{document}
\cite{sigfridsson,worman,geer,knuth:ct:a,knuth:ct:b,knuth:ct:c}
\printbibliography
\end{document}