Cannot delete from database

Hi,

The Model works and deletes the post if I use it in a from to delete it.  When I add it to a table is when it does not work.  This is how I have the table setup.

<tbody>
<?php foreach($posts as $post) : ?>
    <tr>
        <td><?php echo $post['title']; ?></td>
        <td><?php echo $post['body']; ?></td>
        <td><?php echo $post['created_at']; ?></td>
    <td>
        <a class="btn btn-warning" href="<?php echo base_url(); ?>posts/edit/<?php echo $post['slug']; ?>"><i class="fa fa-pencil"></i>Edit</a>
    </td>
NOTE: THE FOLLOWING DOES NOT WORK
    <td>
        <a class="btn btn-danger" type="button"  href="<?php echo base_url(); ?>posts/delete/<?php echo $post['id']; ?>"><i class="fa fa-close"></i>delete</a>
    </td>

    </tr>
<?php endforeach; ?>
</tbody>

Thanks for the help.