[TYPO3-dev] Dynamic List and HMAC issues

[Alexander Stehlik]

Hi,

I have an issue with a dynamically growing select list and before I open 
an issue in forge i would be glad to hear your opinion if there are 
other approaches that work better.

Basically I simply have a form with a multiple select field (form.select 
view helper) and an autocomplete mechanism that adds elements to the 
select field. This has two disadvantages:

1. When submitting the form I have to mark all elements in the select 
field as "checked", otherwise they will not be persisted by extbase 
(this is currently done with javascript and the form onSubmit event).

2. I get a HMAC exception because I have more array elements in my 
select field than are registered in the allowed field list.

The only solution I came up is a new property in the form.select view 
helper called "maxElements". If this property is set then there are as 
many fields registered for the form token generation as were set in 
maxElements.

What would be your approch? I'm looking forward for your ideas :)

Kind regards,
Alex