[TYPO3-core] RFC: Bugfix #9659: TCEmain wrongly tests required input-type fields

[Francois Suter]

Hi,

> Problem:
> When an input-type field is marked as "required" in the TCA, TCEmain 
> tests it simply with
> 
> if (!$value)
> 
> This is insufficient, since in the case of an "int" field, for example, 
> 0 is a perfectly valid value, but it will fail the "required" test.

Here is an updated patch, taking into account Oliver's and Steffen's 
request about using false instead of 0.

Cheers

-- 

Francois Suter
Cobweb Development Sarl - http://www.cobweb.ch
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