Use : instead of comma with biblatex chicago author-date

Question

The four-hour rule has kicked in: I haven't found an answer to this in 4 hrs., so I'm asking here.

I'm using Biblatex-Chicago Author-Date with Biber. A typical in-text citation looks like "(Jones, 2016, 12)" for an item written by Jones, published in 2016, and referencing page 12. But I want it to look like "(Jones 2016: 12)."

I've managed to get rid of the first comma, the one between "Jones" and "2016," by inserting "\renewcommand{\nameyeardelim}{\addspace}" in my preamble. But I've looked and looked and can't find a field like nameyeardelim that delimits the author-year information from the page(s) information.

If you can not only suggest how to accomplish this but also direct me to a place where this stuff is documented, I'd be most appreciative.

Note

The Biblatex documentation may have this, but part of my frustration is that this particular style of citation, using the comma, might be coming from Biber, Biblatex, or the Chicago package -- not only the software itself but the particular combination of options used to invoke each one. And this really presents a haystack for the needle that's the comma being inserted in the citation.

Answer 1

You can use \renewcommand{\postnotedelim}{\addcolon\space}.

A full MWE:

\documentclass{article}

\usepackage[authordate]{biblatex-chicago}
\usepackage{filecontents}

\begin{filecontents}{\jobname.bib}
@book{Jones2016,
    author = {Jones, John},
    title = {Title},
    date = {2016},
}
\end{filecontents}

\addbibresource{\jobname.bib}

\renewcommand{\postnotedelim}{\addcolon\space}

\begin{document}

\parencite[12]{Jones2016}

\end{document}