Multi level category menu problem

Multi level category menu problem - Printable Version

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+--- Thread: Multi level category menu problem (/showthread.php?tid=30211)

Multi level category menu problem - El Forum - 05-06-2010

[eluser]sihijau[/eluser]
Hi i create multi level category menu from database, category table structure:
-id
-parentid
-name
-url

i create methods in category model
method 1

Code:
function getActiveCategory(){

        //$this->db->where('status','active');

        $this->db->orderby('parentid','asc')->groupby('parentid,id');

        $q=$this->db->get('categories');

        foreach($q->result() as $r){

            $data[$r->parentid][] = $r;

        }

        $menu=$this->getCategoryMenu($data,0);

        return $menu;

    }

method 2

Code:
function getCategoryMenu($category,$parent){

        static $i = 1;

        if ($category[$parent]) {

            $menu = '<ul>';

            $i++;

            foreach ($category[$parent] as $r) {

                $child = $this->getCategoryMenu($category, $r->id);

                $menu .= '<li id="'.$parent.'">';

                $menu .= '<a href="#">'.$r->name.'</a>';

                if ($child) {

                    $i--;

                    $menu .= $child;

                }

                $menu .= '</li>';

            }

            $menu .= '</ul>';

            return $menu;

        } else {

            return false;

        }

    }

when i call getActiveCategory on my controller method works, it show me list

* CLOTHES
o Shoes
+ Sport Shoes
o T-shirts
o pants
o dresses
o test2
* FUN
o toys
o games
+ PC Games
+ PS2 Games
* OTHER

but i got an error:

Quote:Severity: Notice

Message: Undefined index: 12

Filename: models/mcategory.php

Line Number: 61

Line 61 on my IDE point to

Quote:if ($category[$parent]) {

Could anyone help me please..?

Multi level category menu problem - El Forum - 05-06-2010

[eluser]dmorin[/eluser]

Code:
if ($category[$parent])

What are you trying to accomplish here? Is that checking to make sure that the index exists? If so, use:

Code:
if (isset($category[$parent]))

Code:
if (array_key_exists($parent, $category))

Multi level category menu problem - El Forum - 05-06-2010

[eluser]sihijau[/eluser]
Oh thanks for pointing me to check array key Smile

using array_key_exists()
problem solved