根据类别将自定义字段添加到joomla前端edit.php

Question

I added a few custom fields with a plugin to my joomla com_content articles. I need to edit these fields in the frontend editor but the fields should just appear based on the category. In case the field should just appear when i select category 43 in the frontend editor.

Actually the fields appear on all categories in above the articletext field.

edit.php:

<div class="tab-pane active" id="editor">
    <?php echo $this->form->renderField('title'); ?>

    <?php if (is_null($this->item->id)) : ?>
        <?php echo $this->form->renderField('alias'); ?>
    <?php endif; ?>

    <!-- custom fields -->
    <?php echo $this->form->renderField('typ', 'attribs'); ?>
    <?php echo $this->form->renderField('notizen', 'attribs'); ?>
    <!-- end custom fields -->

    <?php echo $this->form->getInput('articletext'); ?>
</div>

Can i use if else based on a category id in edit.php or is there another solution?

Answer 1

I am pretty sure you will have access to the category in your form object. Try something like

$category = $this->form->getValue('catid');
$only_on_these = array(10, 20, 30); // special categories
if (in_array($category, $only_in_these)) {
  // render your custom fields
  echo $this->form->renderField('typ', 'attribs');
  echo $this->form->renderField('notizen', 'attribs');
}
...

This works for editing existing content, but you'll need to do some special handling for new articles, forcing them initialized with some categories, depending on how you want this to work.