Does Rules Autotag support generic tags or it only works with closed dictionaries?

Yes, I meant that: closed = taxonomy with predefined terms, dynamic = taxonomy where common users are allowed to add new terms.

So, by your response, I understand that Rules Autotag compares the words in the node content with the terms of certain vocabulary wich is not compatible with what I would like to do. My php skills are very low but I'll take a look to the code and I'll try to implement new tags creation.

About the hashtags extraction, it's really easy to do for simple tagging system like #whatever using regex (like in the link you put).

Thanks.

Thanks again, dasjo.

After finding a little bit confusing rules module, I've started to program a small module to achieve what I want. My main problems have solution now and I "only" need to put them together.

Yes, when I finish I will share it. Unfortunately, my php skills and drupal knowledge are really low so I'm not able to create a goog-looking and very user friendly module. For example, I don't know how tho choose the taxonomy that'll be used using a proper form inside a configuration page for the module. So, it'll be a very rough aproximation to the final purpose.

Not by now, I'm building it from scratch. But when I'll have it working I would like to take a closer look at rules to see if it could be done with it.

My first plan was to develop a quick module by myself and then try to replicate it using rules but yesterday I found a big problem. Basically:

1. I extract hashtags from comment using hook_comment_presave( $comment ) and regex
2. For each extracted hashtag I try to load its related taxonomy term using taxonomy_get_term_by_name( $hashtag, $vocabulary )

• ...if the term exists, fine, I already got it loaded.
• ...if the term doesn't exist, I create it using taxonomy_term_save( $new_term )

And here is the problem; it shouldn't be difficult but after struggling like 5-6 hours with the drupal documentation and looking inside the code of modules like yours and others, I don't know how to assign a taxonomy term to my comment.

At this point, I decided to try replicating the process using rules. Well, I've just started but it seems that I can extract hashtags and create its corresponding terms easily using php code. Then, although I haven't tried yet, I could use Rules Autotag to assign them to the comments. What concerns me is the performance of the site since Rules Autotag works with predefined vocabulary and I want to use with an open one where users could easily create thousands of terms. So, it seems that finally I need to know how to assign terms to comments using PHP.

Regards, thanks in advance and sorry for this long post.

Yes they do ;)

And, after more hours, problem solved. Actually it seems to be really easy, you simply need to build an array with the term ids and voilà.

...
array_push( $fake_field_hashtags['und'], array('tid' => $new_term->tid) ); // term adding to a spare array
...
$comment->field_hashtags = $fake_field_hashtags; //final term addition to the comment itself

The module finally works as I wanted (but lacks any kind of configuration), let's see if I'm able to replicate it using rules.

Regards.