Last active
April 27, 2018 10:08
-
-
Save Jakeii/4529682 to your computer and use it in GitHub Desktop.
Get categories and subcategories in one query, seen many solutions that get the categories and for each category check for subcategories. Uses codeigniter framework, fairly easy to convert to vanilla php if you need. Probably a better storage/display solution than the strange array that I used.
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
<?php | |
$cats_result = $this->model->get_categories($swapid); | |
if ($cats_result->num_rows() > 0) { | |
$cat_index = $sub_index = $row_index = 0; | |
do { | |
$cats[$cat_index]['cat'] = array( | |
'name' => $cats_result->row($row_index)->cat_name, | |
'title' => $cats_result->row($row_index)->cat_title | |
); | |
if($cats_result->row($row_index)->sub_name !== null){ | |
do { | |
$cats[$cat_index]['subs'][$sub_index] = array( | |
'name' => $cats_result->row($row_index)->sub_name, | |
'title' => $cats_result->row($row_index)->sub_title | |
); | |
$sub_index++; | |
$row_index++; | |
if ($cats_result->row($row_index)->cat_name === $cats_result->row($row_index - 1)->cat_name) | |
continue; | |
break; | |
if ($row_index > 50) break 2; | |
} while (true); | |
} else { | |
$row_index++; | |
} | |
$sub_index = 0; | |
$cat_index++; | |
} while ($row_index <= $cats_result->num_rows() + 1); | |
} |
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
<?php | |
public function get_categories($swap) | |
{ | |
$sql = 'select | |
`categories`.`title` AS `cat_title`, | |
`categories`.`name` AS `cat_name`, | |
`subcategories`.`title` AS `sub_title`, | |
`subcategories`.`name` AS `sub_name` | |
from | |
`subcategories` | |
join | |
`categories` ON `categories`.`ID` = `subcategories`.`parent_id` | |
join | |
`swaps_looking_for_subcat` ON `swaps_looking_for_subcat`.`category_id` = `subcategories`.`ID` | |
where | |
`swaps_looking_for_subcat`.`swap_id` = ' . $swap . ' | |
UNION select | |
`categories`.`title` AS `cat_title`, | |
`categories`.`name` AS `cat_name`, | |
`subcategories`.`title` AS `sub_title`, | |
`subcategories`.`name` AS `sub_name` | |
from | |
`categories` | |
left outer join | |
`subcategories` ON `subcategories`.`parent_id` = `categories`.`ID` | |
join | |
`swaps_looking_for_cat` ON `swaps_looking_for_cat`.`category_id` = `categories`.`ID` | |
where | |
`swaps_looking_for_cat`.`swap_id` = ' . $swap . ' | |
order by | |
`cat_title`, `sub_title`'; | |
return $this->db->query($sql); | |
} |
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
<?php | |
if ($cats) { | |
// echo '<pre>'; | |
// print_r($looking_for_cats); | |
// echo '</pre>'; | |
echo '<ul>'; | |
foreach ($cats as $cat) { | |
echo '<li><a href="/browse/' . $cat['cat']['name'] . '">' . $cat['cat']['title'] . '</a></li>'; | |
if (isset($cat['subs'])){ | |
echo '<ul>'; | |
foreach ($cat['subs'] as $sub) { | |
echo '<li><a href="/browse/' . $cat['cat']['name'] . '/' . $sub['name'] . '">' . $sub['title'] . '</a></li>'; | |
} | |
echo '</ul>'; | |
} | |
} | |
echo '</ul>'; | |
} |
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment
i need this code output