Question

I’m using theme that have build-in Portfolio tab in the admin panel.
this theme using the portfolio items and portfolio categories instead of the original posts items and categories.

i’ve build a plugin that make list out of the portfolio’s taxonomy – “categories”

<?php $portfolio_cats = get_terms( 'Categories', $args); ?>
    <?php foreach ($portfolio_cats as $cat) { echo "<option value = '".$cat->name."'>".$cat->name."</option>"; } ?> </select> <input style = "height: 35px;

and wanted to filter all the posts that are not related to the chosen category by the category’s ID.

<input style = "height: 35px;
padding: 10px 45px;" type = "submit" value = "הצג" /> </form>
   <table class="widefat" style = "margin: 0 auto;width: 908px;">
        <thead>
            <tr>
                <th>Category</th>
                <th>Name</th>
            </tr>
        </thead>
        <tbody>
        <?php
            $category_id = get_cat_ID(''.$_POST['filter'].'');
            $q = 'cat=' . $category_id;
            query_posts($q);
            if (have_posts()) : while (have_posts()) : the_post(); ?>
           <tr> <td> <?php echo $_POST['filter']; ?> </td> <td> <a href="<?php the_permalink();?>"><?php the_title(); ?></a> </td> </tr>

           <?php endwhile; endif; ?>
        </tbody>
    </table> 

but no matter what, its always show me the same original posts, and nothing from the portfolio’s posts..

any help would really be appreciated.

UPDATE:
Its now showing every portfolio item but, its showing it only at startup, when i choose category and run search filter, its showing nothing

<input style = "height: 35px;
padding: 10px 45px;" type = "submit" value = "הצג" /> </form>
   <table class="widefat" style = "margin: 0 auto;width: 908px;">
        <thead>
            <tr>
                <th>Category</th>
                <th>Name</th>
            </tr>
        </thead>
        <tbody>
        <?php
            $category_id = $_REQUEST['filter'];
            /* $q = 'cat=' . $category_id; */
            query_posts( array ( 'cat' => $category_id, 'posts_per_page' => -1, 'post_type' => 'portfolio' ) );
            if (have_posts()) : while (have_posts()) : the_post(); ?>
           <tr> <td> <?php echo $_POST['filter']; ?> </td> <td> <a href="<?php the_permalink();?>"><?php the_title(); ?></a> </td> </tr>

           <?php endwhile; endif; ?>
        </tbody>
    </table> 

Answer 1

I was sending a wrong key, instead of ‘cat’, it should be -> categories

query_posts( array ( 'categories' => $category_id, 'posts_per_page' => -1, 'post_type' => 'portfolio', 'post_status' => publish, 'orderby' => 'title', 'order' => 'ASC' ) );