Store \today value with \DTMsavedate

Question

Goal

With datetime2 package I try to save the “\today” date with \DTMdatesave command, but it successively fail.

My tries

1. The dumb method

I began with the most evident way. Putting directly \today as a second argument of \DTMdatesave.

\DTMdatesave{today}{\today}

But, as expected it failed with the following error message:

\ifcsdef {@dtm@datestyle@iso}{\csuse {@dtm@datestyle@iso}}{\PackageError \ETC.
! Paragraph ended before \@dtm@parsedate was complete.
<to be read again>                
                   \par

I think it failed probably because the \today{} command didn’t print the ISO format date (YYYY-MM-DD).

2. Giving ISO formatted date

Then, I use \DTMsetdatestyle{iso} command from datetime2 to convert \today output into an ISO format:

\DTMsavedate{today}{\DTMsetdatestyle{iso}\today}

But it also give me the following error :

\ifcsdef {@dtm@datestyle@iso}{\csuse {@dtm@datestyle@iso}}{\PackageError \ETC.
! Paragraph ended before \@dtm@parsedate was complete.
<to be read again>
                   \par
l.10

3. Saving the command expansion

So, then, I thank I should give a saved output with \let command.

Then, I did:

\newcommand\preparetoday{\DTMsetdatestyle{iso}\today{}}
\let\temptoday\preparetoday
\DTMsavedate{ShootDate}{\temptoday}

And it failed with same error message than the 1st method.

Question

How to store the “\today” date in a datetime2 object?

Answer 1

Use the provided \DTMsavenow:

\documentclass{article}

\usepackage{datetime2}

\begin{document}

\DTMsavenow{today}

Today: \DTMusedate{today}

\end{document}