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Posted by The Natural Philosopher on 11/30/07 20:38
Jerry Stuckle wrote:
> jodleren wrote:
>> Hi all!
>>
>> I have a problem - I have a list of checkboxes, with certain data...
>> the point is, that some of them are set, and the important thing for
>> mere is to get those values, which have changed from CHECKED to NOT
>> CHECKED.
>> Certain values are marked, once done, the user removes the flags, and
>> I need to know what was set to not being checked anymore (to remove
>> them from the task list).
>>
>> But - I only get the $_POST value, it the item was checked.
>>
>> How do I do it the other way?
>>
>> Hmmmmm while writing this, I wonder whether I can use isset() -
>> whether the value is set, but just empty... will check tomorrow.
>>
>> WBR
>> Sonnich
>>
>
> HTML only sends checkboxes which are checked. One way to do it is to
> keep track of which boxes are checked (or all boxes with their previous
> status) in hidden fields.
>
Mmm. I tend to resort to javascript at this point, set up an array of
hidden variables, and every time a checkbox is ticked or unticked, use
the 'onchange=' event handler to set the hidden variables up correctly.
THEY all get sent in the post variable..
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