Hey,
Firstly, am new to this group, so hopefully my discussion item is relevant.
I have been spending the last few days trying out a compound CCK field, using examples such as http://www.poplarware.com/articles/cck_field_module as a great starting point. I have come to realise such how complex an area this is, but I feel I have managed to get quite far along a solution, and wanted to ask around if anyone had any pointers or advice for completing it.
I'm looking to create a CCK field containing a textarea element, and an imagefield element so that a content editor could create n number of 'paragraphs' (textareas) in a node, with images attached to the paragraph. I also want the imagefield to be optional within the compound CCK field; you should be able to have a paragraph without an image. This differs slightly from Jennifer's img_cap_tax_fld example (from PoplarWare) in that the caption field appears after a file has been uploaded, and is stored serially with the file.
So far, my module is structured as follows:
function MYMODULE_elements(), an implementation of Forms API hook_elements() sets up an $elements array, adding the imagefield_widget, imagefield_widget_upload_validators, my MYMODULE_process function and the text_textarea_process function (from the CCK text field):
<?php
/**
* Implementation of Form API's hook_elements().
*/
function MYMODULE_elements() {
$imgel = imagefield_elements();
$elements = array(
'MYFIELD_entry' => $imgel['imagefield_widget']
);
$elements['MYFIELD_entry']['#upload_validators'] = imagefield_widget_upload_validators($field);
$elements['MYFIELD_entry']['#input'] = TRUE;
$elements['MYFIELD_entry']['#process'][] = 'MYMODULE_MYFIELD_entry_process';
$elements['MYFIELD_entry']['#process'][] = 'text_textarea_process';
return $elements;
}
?>My process callback then attempts to add my additional paragraph element:
<?php
/**
* Process callback for widget
*/
function MYMODULE_MYFIELD_entry_process($element, $edit, &$form_state, $form) {
$defaults = $element['#default_value']['data'];
// Make sure $defaults is unserialized
if( !is_array( $defaults )) {
$defaults = unserialize( $defaults );
}
$field = content_fields($element['#field_name'], $element['#type_name']);
$element['paragraph'] = array(
'#title' => t('Paragraph'),
'#type' => 'text_textarea',
'#input' => TRUE,
'#columns' => 60,
'#rows' => 4,
'#default_value' => $defaults['paragraph'],
'#weight' => 2,
);
return $element;
}
?>Unfortunately this is where I have stalled, due to not really understanding the imagefield (which is essentially the filefield) widget. I get the error warning: array_merge() [function.array-merge]: Argument #1 is not an array in /path/to/drupal/sites/all/modules/contrib/cck/filefield/filefield_widget.inc on line 255. Delving into the filefield_widget.inc it seems it is not recognising $item as an array. But I'm a little lost as to how to fix this.
I'm guessing the problem is as a result of essentially using a widget inside a widget.
Would be really happy to discuss this further with people to find a solution. It seems a few people are looking for similar functionality so am more than willing to contribute if I can.
Thanks!
Jon