Re: [jgen] Joomla 3: Dynamically add a hidden field to a JForm object without a hidden.xml

[Mark Dexter]

Have you tried the form load() method? I think that is what you can use to load fields and fieldsets from plain strings or from XML files. See https://github.com/joomla/joomla-cms/blob/staging/libraries/joomla/form/form.php#L669. Good luck. Mark

On Sat, Jan 18, 2014 at 9:19 AM, Clubnite <tin...@googlemail.com> wrote:

Hello,

anyone who could explain how to add a hidden field element to a JForm object in onXXXPrepareForm handler without creating and using a hidden.xml form field file? I seem not to get this managed on my own.

Here is what i tried:

$hidden = new SimpleXMLElement('<field type="hidden" name="test" value="test" default=""/>');

// 1st try

$form->setField($hidden, 'hidden', true);

// dump form fieldsets and fields for testing

foreach ($form->getFieldsets() as $group => $fieldset)

{

   echo '<pre>group: ' . print_r("{$group}: ", true) . '</pre>';

   $fields = $form->getFieldset($group);

   foreach ($fields as $field)

   {

      echo '<pre>field: ' . print_r("{$field->name}: {$field->value}", true) . '</pre>';

   }

}

// 2nd try

$hidden->setForm($form);

// dump form fieldsets and fields for testing

foreach ($form->getFieldsets() as $group => $fieldset)

{

   echo '<pre>group: ' . print_r("{$group}: ", true) . '</pre>';

   $fields = $form->getFieldset($group);

   foreach ($fields as $field)

   {

      echo '<pre>field: ' . print_r("{$field->name}: {$field->value}", true) . '</pre>';

   }

}

What am i doin' wrong?

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[Clubnite]

Hello Mark,

ye, i even tried this method without success.

To answer my own question and providing one solution:

I could manage to load the XML string after i prepended a form and fielset tag. So the properly working code in my case is:

foreach (array('field1', 'field2', 'field3') as $fieldname)

{

   $form->setField(new SimpleXMLElement(''.

      '<form>'.

         '<fieldset name="hidden">'.

            '<field type="hidden" name="' . $fieldname . '" required="true" readonly="true" default="" />'.

         '</fieldset>'.

      '</form>'

  )

      ,null

      ,true

   );

}

If anyone knows an easier solution or a has a suggestion to improve the above code, i was highly appreciated to know about it.