Assigning tags to a post from front end using tag-it jquery UI plugin

Question

Tag-it is a jquery UI plugin that allows assigning tags, exactly like tags system in stackoverflow. https://github.com/aehlke/tag-it/blob/master/README.markdown

My goal is to allow members of my wordpress site to post from front end. To do so, I have created a form with input fields. I get the input content using $_POST['something'].To insert the post data (title, content, custom fields values), I use wp_insert_post function, and it is working well.

And to insert tags for the specific post I use wp_set_object_terms function (since I am using custom post type and a taxonomy for tags). This last function is working well if I assign some sample values to it but I cant get the input values of the tags input created by tag-it. I tried my best to link between the plugin and the PHP code responsible of assigning tags to my post in WP DB.

In fact, in my code source I put:

<ul id="myTags">
</ul>

And this code is transformed by the plugin (after execution) to :

<ul id="myTags" class="tagit ui-widget ui-widget-content ui-corner-all">
<li class="tagit-new">
<input type="text" class="ui-widget-content ui-autocomplete-input" autocomplete="off" role="textbox" aria-autocomplete="list" aria-haspopup="true">
</li>
</ul>

How can I retrieve the POST variable from this input field as an array, so that I can put it in the parameters of wp_set_object_terms ?

Your usual help is always appreciated.\

Answer 1

I added the fieldName parameter to tagit function like this:

<script type="text/javascript">
    $(document).ready(function() {
        $("#myTags").tagit(
        {
        fieldName: "tages[]"
        }
        );
    });
</script>

Now I can echo $_POST['tages']; since the HTML after execution became:

<input type="hidden" style="display:none;" value="d" name="tages">

In addition, $_POST['tages']; is a PHP array which I can directly put in second parameter of wp_set_object_terms.

Thank you very much, some problems take a lot of time to resolve, but only before posting them on SE.