KOMA-script: Add word "Part" and "Chapter" in ToC

Question

How can I add the word "Part" to the part entry and "Chapter" to chapter entries in the ToC?

\documentclass[chapterprefix]{scrbook}

\usepackage[english]{babel}

\begin{document}

\tableofcontents

\part{This is a part}
\chapter{This is a chapter}
\section{This is a section}

\end{document} 

Answer 1

\documentclass[chapterprefix]{scrbook}

\usepackage[english]{babel}

\renewcommand*{\addparttocentry}[2]{%
  \addtocentrydefault{part}{\partname\nobreakspace #1}{#2}%
}%

\makeatletter

\renewcommand*{\addchaptertocentry}[2]{%
  \addtocentrydefault{chapter}{\chaptername\nobreakspace #1}{#2}%
  \if@chaptertolists
    \doforeachtocfile{%
      \iftocfeature{\@currext}{chapteratlist}{%
        \addxcontentsline{\@currext}{chapteratlist}[{#1}]{#2}%
      }{}%
    }%
    \@ifundefined{float@addtolists}{}{\scr@float@addtolists@warning}%
  \fi
}

\makeatother

\usepackage[tocindentauto]{tocstyle}
\usetocstyle{KOMAlike}

\begin{document}

\tableofcontents

\part{This is a part}
\chapter{This is a chapter}
\section{This is a section}

\end{document}

Do not forget to run LaTeX at least three times when you are using the tocindentauto option from the tocstyle package (see p. 3 of the manual):

With option tocindentauto all widths at the TOCs are calculated by tocstyle. The calculation of the width needs at least one LaTeX run with all TOC entries. So you need at least three LaTeX runs

Answer 2

Here is another suggestion that still works if there is an unnumbered chapter or an unnumbered part or an appendix.

\documentclass[
  chapterprefix,
  %numbers=noenddot,
  %toc=indentunnumbered,
  %listof=totoc,
  %listof=chapterentry
]{scrbook}

\usepackage[english]{babel}

\RedeclareSectionCommand[
    tocnumwidth=4em
]{part}
\RedeclareSectionCommand[
    tocnumwidth=6em
]{chapter}
\RedeclareSectionCommand[
    tocindent=6em
]{section}
\RedeclareSectionCommand[
    tocindent=8em
]{subsection}

\let\oldaddchaptertocentry\addchaptertocentry
\renewcommand{\addchaptertocentry}[2]{%
  \ifstr{#1}{}{%
    \oldaddchaptertocentry{#1}{#2}}{%
    \oldaddchaptertocentry{\chapapp{} #1}{#2}%
}}
\let\oldaddparttocentry\addparttocentry
\renewcommand{\addparttocentry}[2]{%
  \ifstr{#1}{}{%
    \oldaddparttocentry{#1}{#2}}{%
    \oldaddparttocentry{\partname{} #1}{#2}%
}}

\usepackage{blindtext}
\begin{document}
\frontmatter
\tableofcontents
\listoftables
\chapter{This is a chapter in frontmatter}
\mainmatter
\part{This is a part}
\blinddocument
\begin{table}%
  \begin{tabular}{l}
  \Huge X
  \end{tabular}
\caption{A table}
\end{table}
\addchap{This is an unnumbered chapter}
\addsec{This is an unnumbered section}
\appendix
\blinddocument
\end{document}

Result:

---

Update using KOMA-Script Version 3.20 (or newer)

\documentclass[chapterprefix]{scrbook}[2016/05/10]

\newcommand\partentrynumberformat[1]{\partname\ #1}
\RedeclareSectionCommand[
  tocentrynumberformat=\partentrynumberformat,
  tocnumwidth=4em
]{part}

\newcommand\chapterentrynumberformat[1]{\chapapp\ #1}
\RedeclareSectionCommand[
    tocentrynumberformat=\chapterentrynumberformat,
    tocnumwidth=5.5em
]{chapter}

\RedeclareSectionCommand[tocindent=5.5em]{section}
\RedeclareSectionCommand[tocindent=7.8em]{subsection}

\usepackage{blindtext}
\begin{document}
\frontmatter
\tableofcontents
\listoftables
\chapter{This is a chapter in frontmatter}
\mainmatter
\part{This is a part}
\blinddocument
\begin{table}%
  \begin{tabular}{l}
  \Huge X
  \end{tabular}
\caption{A table}
\end{table}
\addchap{This is an unnumbered chapter}
\addsec{This is an unnumbered section}
\appendix
\blinddocument
\end{document}

Answer 3

Here is a solution

\documentclass[chapterprefix]{scrbook}

\usepackage[english]{babel}
\makeatletter
\let\oldaddchaptertocentry\addchaptertocentry
\renewcommand{\addchaptertocentry}[2]{%
\oldaddchaptertocentry{}{\@chapapp{} #1. #2}}
\let\oldaddparttocentry\addparttocentry
\renewcommand{\addparttocentry}[2]{%
\oldaddchaptertocentry{}{\partname{} #1. #2}}
\makeatother
\begin{document}

\tableofcontents

\part{This is a part}
\chapter{This is a chapter}
\section{This is a section}

\part{This is a part}
\chapter{This is a chapter}
\section{This is a section}
\appendix

\part{This is a part}
\chapter{This is a chapter}
\section{This is a section}
\end{document}

Answer 4

(RUS) С учетом предложенных выше решений, я для себя нашёл ответ на данный вопрос. Он учитывает, что:

1. В русском языке слово "Приложение" намного больше слова "Глава", поэтому одинаковые отступы выглядят не красиво
2. Главы бывают ненумерованными
3. Мне не нравится слишком большой отступ перед section

(En) Taking into account the above solutions, I found the answer to this question for myself. He takes into account that:

1. In Russian, the word "Application" is much larger than the word "Chapter", so the same indentation does not look beautiful 
2. Chapters are unnumbered 3.
3. I do not like too much indent before section

Добавьте следующий код в преамбулу (Add the following code to the preamble):

% Добавить слово Глава в оглавление
\let\originaladdchaptertocentry\addchaptertocentry
\renewcommand*{\addchaptertocentry}[2]{%
  \IfArgIsEmpty{#1}{% Глава без номера
    \originaladdchaptertocentry{#1}{#2}%
  }{% Глава с номером
    \originaladdchaptertocentry{}{\chapapp~#1. #2}%
  }%
}

Answer 5

Since is the package tocstyle is deprecated use tocbasic with:

\usepackage{tocbasic}
\DeclareTOCStyleEntry[
  entrynumberformat=\entrynumberwithprefix{\chaptername},
  dynnumwidth
]{tocline}{chapter}

\DeclareTOCStyleEntry[
  entrynumberformat=\entrynumberwithprefix{\partname},
  dynnumwidth
]{tocline}{part}
\newcommand\entrynumberwithprefix[2]{#1\enspace#2\hfill}