[TYPO3-core] RFC: a hook in TCEforms to complement hook in TCEmain

[Michael Stucki]

Dmitry Dulepov [typo3] wrote:

> Branches: trunk *and* 4.1
> 
> Problem: currently TCEmain has a hook for evaluating values. This way
> you can transform 123 to 456 on saving. But there is no opposite hook in
> TCEforms, so you cannot translate 456 back to 123 in TCEforms. Currently
> it means that punycode domains can be encoded using hook but decoding
> must XCLASS tceform, which is bad.
> 
> Solution: add hook to TCEforms. I made a simplest version of hook, which
> accepts only value. I though about sending more parameters but hook in
> TCEmain does not accept them either, so they will be useless in the
> context of the hook class.

Makes sense, but please fix these two things:

- "Pair hook to the one in t3lib_TCEforms::checkValue_input_Eval()"
  => this is found in t3lib_TCEmain not TCEforms!

- You might think now that only this single parameter makes sense. Well, I
  cannot say for sure, but I would like to see an array $_params passed to
  every hook. Later, this array can be extended with references easily, so
  the function call does not need to be modified anymore...

> I want this hook in both trunk and 4.1 to give access to extended domain
> names without a need to xclass the core in earlier versions.

Once again I can't remember. Did we allow hooks for stable branches, or not?
Please check at least, but if we decided yes, then you have my go.

- michael
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