setting up categories in view in codeigniter - codeigniter

Question

I am building a online restaurant project through which user can order items. I have a sql table with id,item_name,item_image,item_price and category.
I want to display all items in my view category wise.
My controller function is :-
public function order()
{
if($this->session->userdata('is_logged_in'))
{
$data['i']=$this->model_db->item_details();
$this->load->view('order',$data);
}
else {
redirect('main/login');
}
}
My model function is
public function item_details()
{
$query = $this->db->query("SELECT * FROM items");
return $query->result();
}
My view code is
<div class="container-fluid">
<div class="row">
<div class="col-lg-2 col-xs-12 side-nav"></div>
<div class="col-lg-10 main">
<?php
foreach ($i as $item) {
# code...
?>
<div class="col-xs-12 col-lg-4 <?php echo $item->category ?>">
<div class="col-xs-12 col-lg-8 item">
<img src="<?php echo $item->img?>" width="200px" height="150px">
<p><?php echo $item->item_name?></p>
<p><?php echo $item->category?></p>
<p><?php echo $item->price?></p>
<p>Place Order
</form>
</div></div>
<?php
}
?>
</div>
</div>
</div>
</body
</html>
I want to display all results above in view category wise.

Answer 1

There are several possible solutions. None of them is codeigniter specific.
Here's some untested code that should do what you want:
public function item_details()
{
$items = array();
$categories = $this->db->query("SELECT DISTINCT(category) FROM items")->result();
foreach($categories as $category)
{
$items[$data] = $this->db->query('SELECT * FROM items WHERE category = ?', $category)->result();
}
return $items;
}
And you display it with the following in your view:
foreach ($i as $category => $item) {
// display it ...
}