How to make “Tree Dropdown” in codeigniter?

问题

I am trying to implement tree dropdown option. I am being able to show options that i have in my database. But when clicked it is not being clicked or posted. Here is what i have done.

I have send array data from controller like this:

    $this->data['category_tree'] = $this->general->get_category_tree();

and the function for this in general is:

            public function get_category_tree()
           {
$this->ci->db->where('is_display','1');
$query = $this->ci->db->get('product_categories');

if ($query->num_rows() > 0) 
{

    foreach($query->result() as $cat)
    {
        if($cat->parent_id=='0'){
            //category
            $categories_arr[$cat->id] = array('id' => $cat->id, 'parent_id'=>$cat->parent_id ,'name' => $cat->name, 'subcat' => array());
        }else{
            //subcategory;
            $categories_arr[$cat->parent_id]['subcat'][] = array('id' => $cat->id, 'parent_id' => $cat->parent_id, 'name' => $cat->name);
        }
    }
    return $categories_arr;
}               
return false;
   }

And in view:

       <fieldset >
        <h4>Choose Category</h4>
        <div class="ddmenu"> <a id="chooseCategory" href="javascript:void(0)" class="main_btn">
          <?php if($this->input->post('categoryName',TRUE)){echo $this->input->post('categoryName',TRUE);}?>
          </a>
          <ul>
            <?php
                if($category_tree){
                    foreach($category_tree as $category)
                    {
                        ?>
            <li <?php if(!$category['subcat']){ ?> onclick="addThis('<?php echo $category['name']; ?>','<?php echo $category['id']; ?>','0')" <?php } else { ?>class="dropdown-submenu"<?php }?>> <a href="javascript:void(0)" tabindex="-1"><?php echo $category['name']; ?></a>
              <?php if($category['subcat']){ ?>
              <ul class="dropdown-menu" >
                <?php foreach($category['subcat'] as $subcat){?>
                <li onclick="addThis('<?php echo $subcat['name']; ?>','<?php echo $category['id']; ?>','<?php echo $subcat['id']; ?>')"> <a href="javascript:void(0)" data-clickable="data-clickable" tabindex="-1"> <?php echo $subcat['name']; ?> </a> </li>
                <?php } ?>
              </ul>
              <?php } ?>
            </li>
            <?php
      }

    ?>
          </ul>
        </div>

        <?php } ?>
        </fieldset>

and I am getting this view

But when I click it, nothing happens. How can I make it posted. I have loaded the script. Is it problem with it?

回答1:

Sorry, I gave you the wrong JS. I didn't want to recreate your entire scenario, so I just did the following:

<?php 

$name = 'cat';
$cat_id = 12;
$subcat_id = 11;
$subcat_name = 'Subcat';
?>
<ul>
<li onclick=location.href='<?php echo base_url() . $name . '/' . $cat_id . '/' . $subcat_id; ?>'> 
    <a href="javascript:;" data-clickable="data-clickable" tabindex="-1"> <?php echo $subcat_name; ?> </a>
</li>
</ul>

Of course, your setup is slightly different, but you should be able to replace the variables as appropriate. This did redirect me to a non-existent, but correctly requested page.

来源：https://stackoverflow.com/questions/44558856/how-to-make-tree-dropdown-in-codeigniter

标签

codeigniter

drop-down-menu