LyX - Biblatex square brackets

Question

I am working with LyX (I have no experience with writing documents in LaTeX). I have prepared my citation library with JabRef, imported it into LyX. I need all my citations in square brackets (in text), but when I try to change it there is no option to set it to square (in citation menu). So no it looks like this:

Fisher et al. 2014

but I would need it like this:

[Fisher et al. 2014].

My current settings are:

I found this thread, but when I add this code to preamble:

\makeatletter

\newrobustcmd*{\parentexttrack}[1]{%
  \begingroup
  \blx@blxinit
  \blx@setsfcodes
  \blx@bibopenparen#1\blx@bibcloseparen
  \endgroup}

\AtEveryCite{%
  \let\parentext=\parentexttrack%
  \let\bibopenparen=\bibopenbracket%
  \let\bibcloseparen=\bibclosebracket}

\makeatother

I am getting the error:

My lyx file is available here

Here is small piece of code:

#LyX 2.3 created this file. For more info see http://www.lyx.org/
\lyxformat 544
\begin_document
\begin_header
\save_transient_properties true
\origin unavailable
\textclass scrbook
\begin_preamble
\makeatletter

\newrobustcmd*{\parentexttrack}[1]{%
  \begingroup
  \blx@blxinit
  \blx@setsfcodes
  \blx@bibopenparen#1\blx@bibcloseparen
  \endgroup}

\AtEveryCite{%
  \let\parentext=\parentexttrack%
  \let\bibopenparen=\bibopenbracket%
  \let\bibcloseparen=\bibclosebracket}

\makeatother

% increases link area for cross-references and autoname them
\AtBeginDocument{\renewcommand{\ref}[1]{\mbox{\autoref{#1}}}}
\addto\extrasenglish{%
 \renewcommand*{\equationautorefname}[1]{}
 \renewcommand{\sectionautorefname}{sec.\negthinspace}
 \renewcommand{\subsectionautorefname}{sec.\negthinspace}
 \renewcommand{\subsubsectionautorefname}{sec.\negthinspace}
 \renewcommand{\figureautorefname}{Fig.\negthinspace}
 \renewcommand{\tableautorefname}{Tab.\negthinspace}
}

% in case somebody want to have the label "Equation"
%\renewcommand{\eqref}[1]{Equation~(\negthinspace\autoref{#1})}


% that links to image floats jumps to the beginning
% of the float and not to its caption
\usepackage[figure]{hypcap}
%\usepackage[authoryear,square]{natbib}

% the pages of the TOC is numbered roman
% and a pdf-bookmark for the TOC is added
\let\myTOC\tableofcontents
\renewcommand\tableofcontents{%
  \frontmatter
  \pdfbookmark[1]{\contentsname}{}
  \myTOC
  \mainmatter }

% makes caption labels bold
\setkomafont{captionlabel}{\bfseries}
\setcapindent{1em}

% enables calculations
\usepackage{calc}

% fancy page header/footer settings
\renewcommand{\chaptermark}[1]{\markboth{#1}{#1}}
\renewcommand{\sectionmark}[1]{\markright{\thesection\ #1}}

% increases the bottom float placement fraction
\renewcommand{\bottomfraction}{0.5}

% avoids that floats are placed above its sections
\let\mySection\section\renewcommand{\section}{\suppressfloats[t]\mySection}
\end_preamble
\options intoc,bibliography=totoc,index=totoc,BCOR10mm,captions=tableheading,titlepage
\use_default_options true
\begin_modules
customHeadersFooters
\end_modules
\maintain_unincluded_children false
\language czech
\language_package babel
\inputencoding utf8
\fontencoding global
\font_roman "lmodern" "default"
\font_sans "lmss" "default"
\font_typewriter "lmtt" "default"
\font_math "auto" "auto"
\font_default_family default
\use_non_tex_fonts false
\font_sc false
\font_osf false
\font_sf_scale 100 100
\font_tt_scale 100 100
\use_microtype false
\use_dash_ligatures true
\graphics default
\default_output_format default
\output_sync 0
\bibtex_command bibtex
\index_command default
\float_placement h
\paperfontsize 12
\spacing single
\use_hyperref true
\pdf_title "Your title"
\pdf_author "Your name"
\pdf_bookmarks true
\pdf_bookmarksnumbered true
\pdf_bookmarksopen true
\pdf_bookmarksopenlevel 1
\pdf_breaklinks false
\pdf_pdfborder true
\pdf_colorlinks false
\pdf_backref false
\pdf_pdfusetitle false
\pdf_quoted_options "pdfpagelayout=OneColumn, pdfnewwindow=true, pdfstartview=XYZ, plainpages=false"
\papersize a4paper
\use_geometry false
\use_package amsmath 2
\use_package amssymb 2
\use_package cancel 1
\use_package esint 1
\use_package mathdots 1
\use_package mathtools 1
\use_package mhchem 1
\use_package stackrel 1
\use_package stmaryrd 1
\use_package undertilde 1
\cite_engine biblatex-natbib
\cite_engine_type authoryear
\biblio_style plainnat
\biblatex_bibstyle authoryear
\biblatex_citestyle authoryear
\use_bibtopic false
\use_indices false
\paperorientation portrait
\suppress_date false
\justification true
\use_refstyle 0
\use_minted 0
\branch NoChildDocument
\selected 0
\filename_suffix 0
\color #ff0000
\end_branch
\index Index
\shortcut idx
\color #008000
\end_index
\secnumdepth 3
\tocdepth 2
\paragraph_separation skip
\defskip medskip
\is_math_indent 0
\math_numbering_side default
\quotes_style german
\dynamic_quotes 0
\papercolumns 1
\papersides 1
\paperpagestyle fancy
\tracking_changes false
\output_changes false
\html_math_output 0
\html_css_as_file 0
\html_be_strict false
\end_header

\begin_body

\begin_layout Left Header
\begin_inset Argument 1
status open

\begin_layout Plain Layout
\begin_inset ERT
status collapsed

\begin_layout Plain Layout


\backslash
chaptername
\end_layout

\end_inset


\begin_inset space ~
\end_inset


\begin_inset ERT
status collapsed

\begin_layout Plain Layout


\backslash
thechapter
\end_layout

\end_inset


\end_layout

\end_inset


\begin_inset ERT
status collapsed

\begin_layout Plain Layout


\backslash
rightmark
\end_layout

\end_inset


\begin_inset Note Note
status collapsed

\begin_layout Plain Layout
Enable page headers and add the chapter to the header line.
\end_layout

\end_inset


\end_layout

\begin_layout Right Header
\begin_inset Argument 1
status open

\begin_layout Plain Layout
\begin_inset ERT
status collapsed

\begin_layout Plain Layout


\backslash
leftmark
\end_layout

\end_inset


\end_layout

\end_inset


\end_layout

\begin_layout Left Footer
\begin_inset Argument 1
status open

\begin_layout Plain Layout
\begin_inset ERT
status collapsed

\begin_layout Plain Layout


\backslash
thepage
\end_layout

\end_inset


\end_layout

\end_inset


\end_layout

\begin_layout Center Footer

\end_layout

\begin_layout Center Footer
\begin_inset Argument 1
status open

\begin_layout Plain Layout

\end_layout

\end_inset


\begin_inset ERT
status collapsed

\begin_layout Plain Layout


\backslash
thepage
\end_layout

\end_inset


\end_layout

\begin_layout Chapter
test test test
\end_layout

\begin_layout Standard
\begin_inset CommandInset citation
LatexCommand citealt
key "Fisher2014"
literal "false"

\end_inset


\end_layout

\begin_layout Standard
\begin_inset CommandInset citation
LatexCommand citealt
key "Fisher2017"
literal "false"

\end_inset


\end_layout

\begin_layout Standard
\begin_inset CommandInset citation
LatexCommand citealt
key "Hildebrand2013"
literal "false"

\end_inset


\end_layout

\begin_layout Standard
\begin_inset CommandInset citation
LatexCommand citealt
key "Khan2012"
literal "false"

\end_inset


\end_layout

\begin_layout Standard
\begin_inset CommandInset citation
LatexCommand cite
key "Scheffer2017,Engel2001,ILAE"
literal "false"

\end_inset


\end_layout

\begin_layout Standard
\begin_inset CommandInset bibtex
LatexCommand bibtex
btprint "btPrintCited"
bibfiles "citation_library_disertacka"

\end_inset


\end_layout

\begin_layout Standard
\begin_inset Branch NoChildDocument
inverted 0
status open

\begin_layout Standard
\begin_inset CommandInset bibtex
LatexCommand bibtex
btprint "btPrintCited"
bibfiles "citation_library_disertacka"

\end_inset


\end_layout

\begin_layout Standard
\begin_inset CommandInset nomencl_print
LatexCommand printnomenclature
set_width "custom"
width "2.5cm"

\end_inset


\end_layout

\end_inset


\end_layout

\end_body
\end_document

I made export to LaTeX (by Lyx - file - Export - LaTeX plain

%% LyX 2.3.3 created this file.  For more info, see http://www.lyx.org/.
%% Do not edit unless you really know what you are doing.
\documentclass[12pt,a4paper,oneside,czech,intoc,bibliography=totoc,index=totoc,BCOR10mm,captions=tableheading,titlepage]{scrbook}
\usepackage{lmodern}
\renewcommand{\sfdefault}{lmss}
\renewcommand{\ttdefault}{lmtt}
\usepackage[T1]{fontenc}
\usepackage[utf8]{inputenc}
\usepackage{fancyhdr}
\pagestyle{fancy}
\setcounter{secnumdepth}{3}
\setlength{\parskip}{\medskipamount}
\setlength{\parindent}{0pt}
\PassOptionsToPackage{natbib=true}{biblatex}
\usepackage{babel}
\usepackage{amsmath}
\usepackage{amssymb}
\usepackage[unicode=true,
 bookmarks=true,bookmarksnumbered=true,bookmarksopen=true,bookmarksopenlevel=1,
 breaklinks=false,pdfborder={0 0 0},pdfborderstyle={},backref=false,colorlinks=false]
 {hyperref}
\hypersetup{pdftitle={Your title},
 pdfauthor={Your name},
 pdfpagelayout=OneColumn, pdfnewwindow=true, pdfstartview=XYZ, plainpages=false}

\makeatletter

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% LyX specific LaTeX commands.
\special{papersize=\the\paperwidth,\the\paperheight}


%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% User specified LaTeX commands.
\makeatletter

\newrobustcmd*{\parentexttrack}[1]{%
  \begingroup
  \blx@blxinit
  \blx@setsfcodes
  \blx@bibopenparen#1\blx@bibcloseparen
  \endgroup}

\AtEveryCite{%
  \let\parentext=\parentexttrack%
  \let\bibopenparen=\bibopenbracket%
  \let\bibcloseparen=\bibclosebracket}

\makeatother

% increases link area for cross-references and autoname them
\AtBeginDocument{\renewcommand{\ref}[1]{\mbox{\autoref{#1}}}}
\addto\extrasenglish{%
 \renewcommand*{\equationautorefname}[1]{}
 \renewcommand{\sectionautorefname}{sec.\negthinspace}
 \renewcommand{\subsectionautorefname}{sec.\negthinspace}
 \renewcommand{\subsubsectionautorefname}{sec.\negthinspace}
 \renewcommand{\figureautorefname}{Fig.\negthinspace}
 \renewcommand{\tableautorefname}{Tab.\negthinspace}
}

% in case somebody want to have the label "Equation"
%\renewcommand{\eqref}[1]{Equation~(\negthinspace\autoref{#1})}


% that links to image floats jumps to the beginning
% of the float and not to its caption
\usepackage[figure]{hypcap}
%\usepackage[authoryear,square]{natbib}

% the pages of the TOC is numbered roman
% and a pdf-bookmark for the TOC is added
\let\myTOC\tableofcontents
\renewcommand\tableofcontents{%
  \frontmatter
  \pdfbookmark[1]{\contentsname}{}
  \myTOC
  \mainmatter }

% makes caption labels bold
\setkomafont{captionlabel}{\bfseries}
\setcapindent{1em}

% enables calculations
\usepackage{calc}

% fancy page header/footer settings
\renewcommand{\chaptermark}[1]{\markboth{#1}{#1}}
\renewcommand{\sectionmark}[1]{\markright{\thesection\ #1}}

% increases the bottom float placement fraction
\renewcommand{\bottomfraction}{0.5}

% avoids that floats are placed above its sections
\let\mySection\section\renewcommand{\section}{\suppressfloats[t]\mySection}

\makeatother

\usepackage[style=authoryear,backend=bibtex]{biblatex}
\addbibresource{citation_library_disertacka.bib}
\begin{document}

\lhead[\chaptername~\thechapter]{\rightmark}

\rhead[\leftmark]{}

\lfoot[\thepage]{}

\cfoot{}

\cfoot[]{\thepage}

\chapter{test test test}

\citealt{Fisher2014}

\citealt{Fisher2017}

\citealt{Hildebrand2013}

\citealt{Khan2012}

\citealt{Scheffer2017,Engel2001,ILAE}

\printbibliography


\end{document}

Welcome to TeX SX! Could you post a small compilable code? — Bernard, Sep 02 '19 at 10:27
Here is sample, with added section copied from previous thread — stanedav, Sep 02 '19 at 10:33

score 1 · Accepted Answer · answered Sep 02 '19 at 11:56

By far the best way to do this is to use the ext-authoryear style from the biblatex-ext package. ext-authoryear is a drop in replacement for authoryear style with extra features for customisation. For a similar example not using LyX, see here.

Then you just need three lines in your preamble:

% load biblatex in preamble because LyX loads it after the preamble section
\usepackage[style=ext-authoryear]{biblatex}

% use square brackets for parencite
\DeclareOuterCiteDelims{parencite}{\bibopenbracket}{\bibclosebracket}
% use square brackets for date in textcite
\DeclareInnerCiteDelims{textcite}{\bibopenbracket}{\bibclosebracket}

The only thing to watch is that you pass the same options to biblatex in the preamble set up as in the bibliography document options in LyX otherwise you will get an option clash.

A MWE LyX file becomes:

#LyX 2.3 created this file. For more info see http://www.lyx.org/
\lyxformat 544
\begin_document
\begin_header
\save_transient_properties true
\origin unavailable
\textclass article
\begin_preamble
\usepackage[style=ext-authoryear]{biblatex}
\DeclareOuterCiteDelims{parencite}{\bibopenbracket}{\bibclosebracket}
\DeclareInnerCiteDelims{textcite}{\bibopenbracket}{\bibclosebracket}
\end_preamble
\use_default_options true
\maintain_unincluded_children false
\language english
\language_package default
\inputencoding auto
\fontencoding global
\font_roman "default" "default"
\font_sans "default" "default"
\font_typewriter "default" "default"
\font_math "auto" "auto"
\font_default_family default
\use_non_tex_fonts false
\font_sc false
\font_osf false
\font_sf_scale 100 100
\font_tt_scale 100 100
\use_microtype false
\use_dash_ligatures true
\graphics default
\default_output_format default
\output_sync 0
\bibtex_command default
\index_command default
\paperfontsize default
\spacing single
\use_hyperref false
\papersize default
\use_geometry false
\use_package amsmath 1
\use_package amssymb 1
\use_package cancel 1
\use_package esint 1
\use_package mathdots 1
\use_package mathtools 1
\use_package mhchem 1
\use_package stackrel 1
\use_package stmaryrd 1
\use_package undertilde 1
\cite_engine biblatex
\cite_engine_type authoryear
\biblatex_bibstyle ext-authoryear
\biblatex_citestyle ext-authoryear
\use_bibtopic false
\use_indices false
\paperorientation portrait
\suppress_date false
\justification true
\use_refstyle 1
\use_minted 0
\index Index
\shortcut idx
\color #008000
\end_index
\secnumdepth 3
\tocdepth 3
\paragraph_separation indent
\paragraph_indentation default
\is_math_indent 0
\math_numbering_side default
\quotes_style english
\dynamic_quotes 0
\papercolumns 1
\papersides 1
\paperpagestyle default
\tracking_changes false
\output_changes false
\html_math_output 0
\html_css_as_file 0
\html_be_strict false
\end_header

\begin_body

\begin_layout Standard
Filler text 
\begin_inset CommandInset citation
LatexCommand autocite
key "baez/article"
literal "false"

\end_inset

.
\end_layout

\begin_layout Standard
\begin_inset CommandInset citation
LatexCommand citet
key "bertram"
literal "false"

\end_inset

 says filler text.
\end_layout

\begin_layout Standard
\begin_inset CommandInset bibtex
LatexCommand bibtex
btprint "btPrintCited"
bibfiles "biblatex-examples"

\end_inset


\end_layout

\end_body
\end_document

The corresponding LaTeX file exported from LyX is:

%% LyX 2.3.3 created this file.  For more info, see http://www.lyx.org/.
%% Do not edit unless you really know what you are doing.
\documentclass{article}
\usepackage[T1]{fontenc}
\usepackage[latin9]{inputenc}

\makeatletter
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% User specified LaTeX commands.
\usepackage[style=ext-authoryear]{biblatex}
\DeclareOuterCiteDelims{parencite}{\bibopenbracket}{\bibclosebracket}
\DeclareInnerCiteDelims{textcite}{\bibopenbracket}{\bibclosebracket}

\makeatother

\usepackage[english]{babel}
\usepackage[style=ext-authoryear]{biblatex}
\addbibresource{biblatex-examples.bib}
\begin{document}
Filler text \autocite{baez/article}.

\textcite{bertram} says filler text.

\printbibliography

\end{document}

After few hours of trying to sort it out, this was the right way! Thank you very much David! — stanedav, Sep 09 '19 at 09:07

LyX - Biblatex square brackets

1 Answers1