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Re: [PHP] Problem w/ Hidden Input Fields

Posted by Jochem Maas on 10/11/05 10:51

Jason Ferguson wrote:
> Jochem,
>
> Thanks for the response. I actually solved the problem a few days
> ago... I'm suprised this message never went out to the list until
> today.
>
> I actually WANTED one to override the other in this case. The user
> should be able to choose one of the default radio buttons (in which
> case the hidden field would work) or be able to provide their own by
> typing/pasting it into the text box.

I see - then I recommend that you reNAME both elements to 'txtKeyValue[]'.
this will cause php to create an array for you so you can always get to
both values. e.g.

print_r($_POST['txtKeyValue']); // Array

that will give you a numerically indexed array, if you rename the textboxes
individually to 'txtKeyValue[default]' and 'txtKeyValue[other]'
you will have an associative array with a structure like:

$arr = array(
'default' => 'ABQIAAAAh2cCTTmAE6T4OXjecIFe5BQMxb4e6BwgeSB7cBu9SbVQSak6ARTgAPoctbx36BXXgbYZONZls0B1LQ',
'other' => '',
);

there is no intrisic need to give the elements an id at all (regardless
never give 2 elements on one page the same id.)

>
> I got around the problem by temporarily using a rather ugly switch
> statement until I revist the problem in a later release.

I like switch statements, my favorite is the rather evil use
of switch()'ing on true:

switch (true) {
case (/* arbitrary boolean expression */):
break;
// .. and so on
}

>
> Jason
>
> On 10/10/05, Jochem Maas <jochem@iamjochem.com> wrote:
>
>>hi Jason,
>>
>>Jason Ferguson wrote:
>>
>>>I have a <input type="hidden"> field with a value 86 characters long.
>>>Here is the entire form:
>>>
>>> <form name="frmWizard" id="frmWizard" method="post" action="">
>>> <table>
>>> <tr>
>>>
>>> <td><input type="radio" name="radioKey" value="2"
>>>checked="checked" />Rootsweb
>>> <input type="hidden" name="txtKeyValue" id="txtKeyValue"
>>>maxlength="90" value="ABQIAAAAh2cCTTmAE6T4OXjecIFe5BQMxb4e6BwgeSB7cBu9SbVQSak6ARTgAPoctbx36BXXgbYZONZls0B1LQ"
>>>/>
>>> </td>
>>> </tr>
>>> <tr>
>>> <td><input type="radio" name="radioKey" value="2" />Other Site:
>>><input type="text" name="txtKeyValue" id="txtKeyOther" /></td>
>>
>>this text input has the same name, seeing as it comes after the
>>hidden field it will be submitted after it (in terms of the order
>>of the POST vars) too. the value of second incoming txtKeyValue
>>effectively overwrites the first - result is you always see an empty value.
>>
>>after thought:
>>you can work around it with javascript or php (and possibly changing
>>'txtKeyValue' to 'txtKeyValue[]'), or just change the name of
>>one of the fields :-)
>>
>>
>>> </tr>
>>> <tr>
>>> <td class="center">
>>>
>>> <input type="button" name="btnGenTemplate" id="btnGenTemplate"
>>>value="Generate HTML" onclick="setWizardAction('genHTML.php')" />
>>> </td>
>>> <tr>
>>> <td class="center">
>>> <input type="button" name="btnPrev" id="btnPrev" value="&lt;--
>>>Prev" disabled="true" />
>>> <input type="button" name="btnNext" id="btnNext" value="Next
>>>--&gt;" onclick="setWizardAction('mmwizard1.php')"/>
>>> <input type="button" name="btnFinish" id="btnFinish" value =" Finish" />
>>> </td>
>>> </tr>
>>>
>>> </table>
>>> </form>
>>>
>>>However, when I submit and do a print_r($_POST), there is no value for
>>>$_POST['txtKeyValue'].
>>>
>>>Note: the setWizardAction() function sets the <form action="">
>>>attribute so the Prev/Next buttons work correctly.
>>>
>>>The application is very close to being complete, so I need help ASAP
>>
>>don't quite follow that logic ;-)
>>
>>.
>>
>>>Jason
>>>
>>
>>

 

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