[SOLVED] Evo + Ditto: Show [+var+] if [+TV+] is=VALUE ? (in ditto)

Hello,
This should work; I’m baffled that I can’t get it to work. Sure could use some guidance...

I have a TV called showDate, using checkbox to set it to `1`, or not.
In my Ditto template I have:

I’ve tried many things, including:

And I’ve switched the * and + to various combinations, because sometimes I must admit the subtleties of Ditto can baffle me a bit.

Is this even possible? because I can’t find any info on this which works for me...

Thanks for any suggestions

Hi
Well I’ve given up on doing it this way, I just can’t make it work.
So now I’m just trying to load a different chunk depending on the value of ’showDate’.

showDate tv would just have either ’showDate.ch’ or ’hideDate.ch’ and those are little chunks with or

But even this won’t work. Dates are going to be what makes me give up and start making everything in CodeIgniter, I swear. I’m too stupid for this, clearly. I’ve tried snippets, chunks, whatever. Using different templates for content items on different pages is not scalable, I hate doing it.
I have even tried filtering ditto date results based on epoch (if(epoch) don’t show)


crap.

Have you defined your own TV [tt][*date*][/tt]?
As far as I know there is no placeholder [tt][*date*][/tt] for documents.
You may use [tt][*pub_date*][/tt] or [tt][*createdon*][/tt] or [tt][*editedon*][/tt].
Within the Ditto template you always have to use [tt][+....+][/tt] instead of [tt][*....*][/tt].
So try [tt][+showDate:is=`1`:then=`<small>[+createdon+]</small>`+][/tt]

EDIT:
Sorry, of cource you can use the placeholder [tt][+date+][/tt] in the Ditto template. (So you are right: "This should work.")
Forgot to say: [tt][+createdon+][/tt] will give just the timestamp (number of seconds since 1970-01-01), so you have to modify it using a date format, for example [tt][+createdon:date=`%Y-%m-%d`+][/tt]

I played a bit around and met anew a wellknown trap with Ditto:
It wants to have a placeholder or TV in its template, otherwise the output will be empty.
The problem is: having the TV within a phx placeholder, that wouldn’t help. The TV has to occur outside of the phx construct.

So I found confirmed that this would not work:
because there the TV is only occuring within the phx placeholder.

On the other hand, the following works like expected, because the TV is also present unmodified:


Fortunately I found a trick to get rid of the unwanted output of [tt][+showDate+][/tt] at the beginning - we simply modify it to an empty string:

That does it! This is strange enough since now again the TV does not occur unmodified...

Additional observation: Using the short version
instead of
will never result in the wanted output.

And a remark: Using [tt][*showDate*][/tt] would refer to the value of the TV for the document which contains the Ditto call - normally the one given in the [tt]&parents[/tt] parameter. That may have sense if you want to control an equal behaviour of all its child documents through just one value.

I think this is the purpose of the &hiddenFields parameter ("Allow Ditto to retrieve fields its template parser cannot handle such as nested placeholders and fields"). So you could try just adding &hiddenFields=`showDate` to your Ditto call.

I’ve come across this problem before, but in forms, so I could add a hidden field to flush out the placeholder value. I’ve always wondered if this parameter would have the same effect, and a quick test seems to confirm it.
KP

@ottogal - Thank you so much, you have helped me solve this and several other nagging issues at once

@kp52 - ’&hiddenFields’? that’s great, I’ll have to test it out; looks like something that will come in very handy, thank you very much.

-g

purpose of the &hiddenFields parameter ("Allow Ditto to retrieve fields its template parser cannot handle such as nested placeholders and fields")

Thank you, kp52, for this reminder: Once upon a time I knew that...