Add support for the content multigroup module?

BTW, The patch I attached above also removes the closing PHP tag from the end of the script.

The PHP closing tag in the affected file was already removed on CVS, so the patch here is broken by that.

All you need to do is append the following functions to the end of content_taxonomy_options.module

/**
 * Implementation of hook_content_multigroup_allowed_widgets().
 */
function content_taxonomy_content_multigroup_allowed_widgets() {
  return array('content_taxonomy_options', 'content_taxonomy_select');
}

/**
 * Implementation of hook_content_multigroup_no_remove_widgets().
 */
function content_taxonomy_content_multigroup_no_remove_widgets() {
  return array('content_taxonomy_options', 'content_taxonomy_select');
}

hmm... I believe taxonomy autocomplete is used for freetagging, and a single widget manages several values, which is not possible within the context of a multigroup.

Please, see comment #305 for an examplanation on why:

http://drupal.org/node/119102?page=1#comment-1191555

Well, I guess this would need a modification on the autocomplete widget to react acoordingly when the multiple values of the field is set to 0 (meaning just one value per widget), which is what the multigroup does to fields as it can only deal with one single value per subgroup of fields.

Otherwise, the user could still enter several terms on a freetagging field part of a multigroup, but only the first one would be stored in the database. =:-o

I would like to mention that filefield already committed changes to their CVS to offer forward compatibility with the content multigroup module. Please, see #367267: Compatibility issues with Content Multigroup

Latest news on the content multigroup module can be found on comment 119102#424: Content multigroup issue.

All it's needed here is the implementation of a couple of multigroup hooks, as described in #4 above. A plus would be if the freetagging widget could work with an arbitrary number of multiple values, otherwise this widget cannot be used within the context of multigroups as described here.

Yes, but freetagging is not supported for multigroups. Only the widgets of type 'content_taxonomy_options' and 'content_taxonomy_select' are supported.

See explanation here:

http://drupal.org/node/119102?page=1#comment-1191555

BTW, when you create a field that you wish to add to a multigroup, you can drop it directly inside the multigroup from the 'Add field' section. That way the first field is created in the correct table. Otherwise, the field is added at the content type table, and then to a separate table for the field when you drop it into the multigroup.

I haven't checked if the freetagging widget can work with single values. If so, it would be possible to try if it works in multigroups. For this, you only need to add 'content_taxonomy_autocomplete' to the list of items returned by the implementations of multigroup related hooks above.

The number of values for fields in multigroups is managed by the multigroup module, and it generates single value fields for each subgroup of fields in the multigroup. If that is supported by the freetagging widget and works, then great, we can add this widget to the list in the hooks.

If you try, be sure to have backups of your database. You will also need to clear caches after changing the code, and then try to edit the content types and play with the fields to see what happens.

@all: I have tested the content taxonomy autocomplete widget and it worked, so this one can also be added to the list of supported widgets on the content_multigroup hooks. The only caveat is that you can only attach a single term to an item when using taxonomy fields in multigroups because CCK can only support one dimension of delta values. Each field accept multiple values, but under the context of multigroups, each value is managed from its own subgroup in the multigroup.

@mh86: The multigroup module has been committed to CVS, as part of a new experimental branch in CCK. :-D

The new branch has a development snapshot that can be downloaded from here:

http://drupal.org/node/484068

For further information, please see the latest comments here: #196421: Deleting unwanted multiple values / multiple values delta issues

I'm attaching a patch against current dev code of the content taxonomy module to implement the content_multigroup hooks that are needed in order to use these widgets on multigroups.

Here's an updated patch against latest cvs code.

I have moved the implementation of the content_multigroup hooks to content_taxonomy.module. Previous patches added them to the content_taxonomy_options module, but later we realized the content_taxonomy_autocomplete was also compatible with multigroups, so this now may belong to content_taxonomy. Makes more sense like this, I think.

Thank you! :)

I tried to add the content_taxonomy_tree widget to the allowed widget list, but as soon as I used a content_taxonomy_tree in the multigroup widget, the group stopped working (no values saved). are there any special reasons for this?

I do not recall exactly, but when I tried, there were issues with the way the multiple values are managed by the widget.

The multigroup tries to manage the form in several ways to avoid this kind of problems, but it has limitations.

I'm not sure it if would be easy to build the taxonomy tree element in a way that's compatible with the multigroup. This needs investigation, and I has not time to do so.

Thanks again. The other taxonomy widgets work just fine. :)