[SOLVED] No caching for calculated date

Using Neos & Flow
1

Hi everybody,

I need the current month or the next month to show.
I make this with a condition.
The result is right but in FLOW_CONTEXT Production Mode there is no change, when condition change.

prototype(Vendor.Site:Presentation.Offercard) < prototype(Neos.Fusion:Component) {

...

    offermonth = Neos.Fusion:Case {
           if {
                condition = ${Date.dayOfMonth(Date.now()) <= 10}  // Regel soll nur greifen, wenn Monatsanfang vom 1. bis 10.
                aktmonth = ${Date.now()} // Setze aktuellen Monat.
                aktmonthf = ${Date.format(this.aktmonth, 'm')}
                renderer = ${this.aktmonthf}
            }
               else {
                    condition = ${Date.dayOfMonth(Date.now()) > 10 && Date.month(Date.now()) < 12} // Diese Regel soll greifen ab dem 11. des Monats, sofern nicht Dezember
                    nextmonth = ${Date.create('first day of next month')}
                    nextmonthf  = ${Date.format(this.nextmonth, 'm')}
                    renderer = ${this.nextmonthf}
                }
    }

I suspect that the variable “offermonth” must be exempt from caching. But how should the line @cache.mode = ‘uncached’ be entered?

Nothing I’ve tried yet works.

Thanks in advance
Bernd

2

Hi Bernd,

welcome to Neos!

You cannot really exclude a single variable from cache.
You could however set the cache lifetime for this element to one day (or lower) so it gets refreshed regularly. Even better I guess would be to calculate this in the frontend via JS to avoid removing the cache that often.

1 Like
3

Hi Christian,

It is enough if the cache is emptied once on the 11th of each month. That doesn’t really work, does it?

4

Hi Bernd,

you can calculate the time until the next 11th and set this as the cachelifetime.

See: Caching - Rendering - Manual - Guide - Neos Docs
“maximumLifetime”

2 Likes
5

I use the maximumLifeTime in the @cache configuration in the page footer which has a copyright notice with the current year - which has to automatically update on new years eve:

maximumLifetime = ${Date.create('first day of next year').timestamp - Date.now().timestamp}

You can alter that for the 11th of each month. It should be something like this…

maximumLifetime = ${Date.add(Date.create('first day of next month'), '11 days').timestamp - Date.now().timestamp}

You can find the docs for the Date object in the Eel Helpers Reference — Neos CMS 8.3.x documentation.

1 Like
6

Hi Björn,

That’s great!
I need this in my footer too.
I hadn’t thought about caching until now.
But now I was wondering how it worked for me that the year updated even though I had no longer touched an older neos project.
And in fact, now that I’ve checked I see that it still says 2022 in the footer. Oh man! :exploding_head:

After a lot of trying, I patched together the following:

    maxcachelifetime1 = ${Date.diff(Date.create('today'), Date.create('first day of next month'))}
    maxcachelifetime = ${(this.maxcachelifetime1.d * 86400) + 950400}

I like your code (Especially the extension of the timestamp) and will try it.
Thank you for the concrete solution. I like copy and paste :smile:
(But before that I didn’t spare myself from working out a solution myself)

Best regards,
Bernd