[TYPO3-english] Flexform questions

[Robert Wildling]

This helped:
http://old.nabble.com/FlexForm-Help-td15509897.html

(in case somebody else needs it; seems to be a not very well documented 
feature...)

Thanks, Francois Suter!

> Hi,
>
> A Flexform shall eventually have 3 fields, one showing after the other
> as soon as the previous one has a value.
>
> This is step one:
>
> <teaserPID>
> <TCEforms>
> <onChange>reload</onChange>
> <label>Select Page (pid)</label>
> <config>
> <type>input</type>
> </config>
> </TCEforms>
> </teaserPID>
>
> <infoOne>
> <TCEforms>
> <displayCond>FIELD:teaserPID:=:0</displayCond>
> <label>Save to enable new fileds</label>
> <config>
> <type>none</type>
> </config>
> </TCEforms>
> </infoOne>
>
>
> My question here is:
>
> 1. At the moment, infoOne evaluates against a value of 0 of teaserPID
> and decides upon that whether to display or not. But what if teaserPID
> has no value at all? I tried:
>
> FIELD:teaserPID:IN:0,NULL,''
>
> but that just doesn't work, and even though I studied the
> http://typo3.org/documentation/document-library/core-documentation/doc_core_api/4.2.0/view/4/2/
> I couldn't find a solution. What am I supposed to do here?
>
>
> The next step would be to show a field that reads the contents from the
> table with the pid given in teaserPID in form of a database relation (an
> empty select box next to a selectbox with a list of content elements to
> choose from). Here I am totally stuck. The only entry in the Core
> documentation that can be found when searching for database relation is
> under allowNonIdValues ...
>
> I have a feeling that a script is needed like in tt_news, but I can
> nowhere find a description of how and why and some hints etc...
>
> Can anybody point please me to a tutorial?
>
> Any help is greatly appreciated!
> Thanks!
>
> Regards,
> Robert
>