Hoe kan ik een menu script maken met oneindige mogelijkheid tot submenus
Hoe kan ik dat het beste aanpakken?
Mijn database structuur is als volgt:
(tabelnaam van de categorieen) snm_categories
id - het id van de categorie
parent_id - het parent id van de categorie, deze is gelijk aan het id van een bepaalde categorie, hangt een categorie niet onder een andere categorie, dan is het parent_id altijd 1
level - het niveau van de categorie (top level is 1, hangt een categorie onder een topcategorie dan is die 2, hangt die onder een subcategorie dan is hij 3 enzovoort).
title - titel van de categorie
alias - alias van de categorie (de titel maar dan url friendly)
Momenteel haal ik op deze manier alle topcategorieen op:
(snm_content zijn artikelen/producten deze wil ik later ook kunnen hangen onder categorieen maar dat is voor nu even niet relevant)
Code (php)
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<div id="main-menu" class="main-nav zn_mega_wrapper">
<ul id="menu-main-menu" class="main-menu zn_mega_menu">
<li><a href="home">Home</a></li>
<?PHP
$alias = $_GET['alias'];
//Haal alle categorieen en check gelijk of de desbetreffende categorie artikelen onder zich heeft hangen.
$menu = "
SELECT cat.id as cat_id, cat.level, cat.parent_id, cat.title as cat_title, cat.alias as cat_alias, cat.published, cat.rgt, cnt.state, cnt.id as content_id, cnt.catid, cnt.title as content_title, cnt.alias as content_alias
FROM snm_categories cat
LEFT JOIN snm_content cnt
ON cnt.catid = cat.id
WHERE cat.id NOT IN (1, 2, 3, 4, 5, 7)
AND cat.published = 1
AND cat.level = 1
GROUP BY cat.id
ORDER BY cat.rgt ASC";
$menuconn = $conn->query($menu);
//Loop het resultaat
while($menu = $menuconn->fetch_assoc()){
//Code om te checken of de huidige pagina gelijk is aan de alias
if($menu['alias'] == $alias){
$class='current';
} else {
$class = '';
}
$menuresult .= '<li class="'.$class.' menu-item"><a href="'.$menu['cat_alias'].'">'.$menu['cat_title'].'</a>';
$menuresult .= '</li>';
}
echo $menuresult;
?>
<li><a href="contact">Contact</a></li>
</ul>
</div>
<ul id="menu-main-menu" class="main-menu zn_mega_menu">
<li><a href="home">Home</a></li>
<?PHP
$alias = $_GET['alias'];
//Haal alle categorieen en check gelijk of de desbetreffende categorie artikelen onder zich heeft hangen.
$menu = "
SELECT cat.id as cat_id, cat.level, cat.parent_id, cat.title as cat_title, cat.alias as cat_alias, cat.published, cat.rgt, cnt.state, cnt.id as content_id, cnt.catid, cnt.title as content_title, cnt.alias as content_alias
FROM snm_categories cat
LEFT JOIN snm_content cnt
ON cnt.catid = cat.id
WHERE cat.id NOT IN (1, 2, 3, 4, 5, 7)
AND cat.published = 1
AND cat.level = 1
GROUP BY cat.id
ORDER BY cat.rgt ASC";
$menuconn = $conn->query($menu);
//Loop het resultaat
while($menu = $menuconn->fetch_assoc()){
//Code om te checken of de huidige pagina gelijk is aan de alias
if($menu['alias'] == $alias){
$class='current';
} else {
$class = '';
}
$menuresult .= '<li class="'.$class.' menu-item"><a href="'.$menu['cat_alias'].'">'.$menu['cat_title'].'</a>';
$menuresult .= '</li>';
}
echo $menuresult;
?>
<li><a href="contact">Contact</a></li>
</ul>
</div>
Dit was mijn menu code eerst (let niet op de slordigheid, het is meer als referentie hoe ik het eerst opgelost heb):
Code (php)
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<div id="main-menu" class="main-nav zn_mega_wrapper">
<ul id="menu-main-menu" class="main-menu zn_mega_menu">
<li><a href="home">Home</a></li>
<?
$alias = $_GET['alias'];
//Haal alle categorieen en check gelijk of de desbetreffende categorie artikelen onder zich heeft hangen.
$menu = "
SELECT cat.id as cat_id, cat.level, cat.parent_id, cat.title as cat_title, cat.alias as cat_alias, cat.published, cat.rgt, cnt.state, cnt.id as content_id, cnt.catid, cnt.title as content_title, cnt.alias as content_alias
FROM snm_categories cat
LEFT JOIN snm_content cnt
ON cnt.catid = cat.id
WHERE cat.id NOT IN (1, 2, 3, 4, 5, 7)
AND cat.published = 1
AND cat.level = 1
GROUP BY cat.id
ORDER BY cat.rgt ASC";
$menuconn = $conn->query($menu);
//Loop het resultaat
while($menu = $menuconn->fetch_assoc()){
$cat_ids = '';
$subcatmenulijst = '';
$subcats = '';
//Code om te checken of de huidige pagina gelijk is aan de alias
if($menu['alias'] == $alias){
$class='current';
} else {
$class = '';
}
//Stop alle ids van de categorieen in een array
$cat_ids[] = $menu['cat_id'];
//Implodeer ze met commas ertussen zodat ze bruikbaar zijn in een query
if(!empty($cat_ids)) {
$useableids = implode(',', $cat_ids);
}
// Query voor de subcats
$subcatmenu = 'SELECT * FROM snm_categories WHERE parent_id IN ('.$conn->real_escape_string($useableids).') and published = 1 ORDER BY lft';
$subcatmenucon = $conn->query($subcatmenu);
while($subcatmenu = $subcatmenucon->fetch_assoc()){
$subcatids[] = $subcatmenu['id'];
$subsubcatmenulijst = '';
$subsubartmenulijst = '';
if(!empty($subcatids)) {
$useablesubcatids = implode(',', $subcatids);
}
$subcatmenulijst .= '<li>';
$subcatmenulijst .= '<a href="'.$subcatmenu['alias'].'">'.$subcatmenu['title'].'</a>';
//Subsub categorieen
$subsubcatmenu = 'SELECT * FROM snm_categories WHERE parent_id IN ('.$conn->real_escape_string($useablesubcatids).') and published = 1 ORDER BY lft';
$subsubcatmenucon = $conn->query($subsubcatmenu);
while($subsubcatmenu = $subsubcatmenucon->fetch_assoc()){
$subsubcatmenulijst .= '<li><a href="'.$subsubcatmenu['alias'].'">'.$subsubcatmenu['title'].'</a></li>';
}
//Subsub artikelen
$subsubartmenu = '
SELECT ct.id, ct.title, ct.alias as content_alias, ct.ordering, ct.state, ct.catid, cat.alias as cat_alias
FROM snm_content ct
LEFT JOIN snm_categories cat
ON ct.catid = cat.id
WHERE ct.catid IN ('.$conn->real_escape_string($useablesubcatids).')
AND ct.state = 1
ORDER BY ct.ordering';
$subsubartmenucon = $conn->query($subsubartmenu);
while($subsubartmenu = $subsubartmenucon->fetch_assoc()){
$subsubartmenulijst .= '<li><a href="'.$subsubartmenu['cat_alias'].'/'.$subsubartmenu['content_alias'].'">'.$subsubartmenu['title'].'</a></li>';
}
// Wanneer er sub sub categorieen of artikelen zijn, laat deze dan zien
if($subsubcatmenucon->num_rows > 0 OR $subsubartmenucon->num_rows > 0){
$subcatmenulijst .= '<ul class="sub-menu">';
$subcatmenulijst .= $subsubcatmenulijst;
$subcatmenulijst .= $subsubartmenulijst;
$subcatmenulijst .= '</ul>';
}
$subcatmenulijst .= '</li>';
}
// Als
if(!empty($subcatmenulijst)){
$subcats = 'true';
}
//Loop alle categorieen
$menuresult .= '<li class="'.$class.' menu-item"><a href="'.$menu['cat_alias'].'">'.$menu['cat_title'].'</a>';
//Haal alle artikelen op waar het catid gelijk is aan het id van een categorie (binnen bovenstaande loop, zodat het gebeurd voor elke categorie)
$submenu = "SELECT * FROM snm_content WHERE catid = '".$conn->real_escape_string($menu['cat_id'])."' AND state = 1 ORDER BY ordering";
$submenuconn = $conn->query($submenu);
//Als er het id van een artikel niet leeg is (dus als er artikelen onder hangen) OF als er subcategorieeen aanwezig zijn:
if(!empty($menu['content_id']) OR $subcats == 'true'){
$menuresult .= '<ul class="sub-menu">';
//Loop het resultaat
while($submenu = $submenuconn->fetch_assoc()){
$menuresult .= '<li><a href="'.$menu['cat_alias'].'/'.$submenu['alias'].'">'.$submenu['title'].'</a></li>';
}
// Plak de categorieen onder artikelen
$menuresult .= $subcatmenulijst;
$menuresult .= '</ul>';
}
$menuresult .= '</li>';
}
echo $menuresult;
?>
<li><a href="contact">Contact</a></li>
</ul>
</div>
<ul id="menu-main-menu" class="main-menu zn_mega_menu">
<li><a href="home">Home</a></li>
<?
$alias = $_GET['alias'];
//Haal alle categorieen en check gelijk of de desbetreffende categorie artikelen onder zich heeft hangen.
$menu = "
SELECT cat.id as cat_id, cat.level, cat.parent_id, cat.title as cat_title, cat.alias as cat_alias, cat.published, cat.rgt, cnt.state, cnt.id as content_id, cnt.catid, cnt.title as content_title, cnt.alias as content_alias
FROM snm_categories cat
LEFT JOIN snm_content cnt
ON cnt.catid = cat.id
WHERE cat.id NOT IN (1, 2, 3, 4, 5, 7)
AND cat.published = 1
AND cat.level = 1
GROUP BY cat.id
ORDER BY cat.rgt ASC";
$menuconn = $conn->query($menu);
//Loop het resultaat
while($menu = $menuconn->fetch_assoc()){
$cat_ids = '';
$subcatmenulijst = '';
$subcats = '';
//Code om te checken of de huidige pagina gelijk is aan de alias
if($menu['alias'] == $alias){
$class='current';
} else {
$class = '';
}
//Stop alle ids van de categorieen in een array
$cat_ids[] = $menu['cat_id'];
//Implodeer ze met commas ertussen zodat ze bruikbaar zijn in een query
if(!empty($cat_ids)) {
$useableids = implode(',', $cat_ids);
}
// Query voor de subcats
$subcatmenu = 'SELECT * FROM snm_categories WHERE parent_id IN ('.$conn->real_escape_string($useableids).') and published = 1 ORDER BY lft';
$subcatmenucon = $conn->query($subcatmenu);
while($subcatmenu = $subcatmenucon->fetch_assoc()){
$subcatids[] = $subcatmenu['id'];
$subsubcatmenulijst = '';
$subsubartmenulijst = '';
if(!empty($subcatids)) {
$useablesubcatids = implode(',', $subcatids);
}
$subcatmenulijst .= '<li>';
$subcatmenulijst .= '<a href="'.$subcatmenu['alias'].'">'.$subcatmenu['title'].'</a>';
//Subsub categorieen
$subsubcatmenu = 'SELECT * FROM snm_categories WHERE parent_id IN ('.$conn->real_escape_string($useablesubcatids).') and published = 1 ORDER BY lft';
$subsubcatmenucon = $conn->query($subsubcatmenu);
while($subsubcatmenu = $subsubcatmenucon->fetch_assoc()){
$subsubcatmenulijst .= '<li><a href="'.$subsubcatmenu['alias'].'">'.$subsubcatmenu['title'].'</a></li>';
}
//Subsub artikelen
$subsubartmenu = '
SELECT ct.id, ct.title, ct.alias as content_alias, ct.ordering, ct.state, ct.catid, cat.alias as cat_alias
FROM snm_content ct
LEFT JOIN snm_categories cat
ON ct.catid = cat.id
WHERE ct.catid IN ('.$conn->real_escape_string($useablesubcatids).')
AND ct.state = 1
ORDER BY ct.ordering';
$subsubartmenucon = $conn->query($subsubartmenu);
while($subsubartmenu = $subsubartmenucon->fetch_assoc()){
$subsubartmenulijst .= '<li><a href="'.$subsubartmenu['cat_alias'].'/'.$subsubartmenu['content_alias'].'">'.$subsubartmenu['title'].'</a></li>';
}
// Wanneer er sub sub categorieen of artikelen zijn, laat deze dan zien
if($subsubcatmenucon->num_rows > 0 OR $subsubartmenucon->num_rows > 0){
$subcatmenulijst .= '<ul class="sub-menu">';
$subcatmenulijst .= $subsubcatmenulijst;
$subcatmenulijst .= $subsubartmenulijst;
$subcatmenulijst .= '</ul>';
}
$subcatmenulijst .= '</li>';
}
// Als
if(!empty($subcatmenulijst)){
$subcats = 'true';
}
//Loop alle categorieen
$menuresult .= '<li class="'.$class.' menu-item"><a href="'.$menu['cat_alias'].'">'.$menu['cat_title'].'</a>';
//Haal alle artikelen op waar het catid gelijk is aan het id van een categorie (binnen bovenstaande loop, zodat het gebeurd voor elke categorie)
$submenu = "SELECT * FROM snm_content WHERE catid = '".$conn->real_escape_string($menu['cat_id'])."' AND state = 1 ORDER BY ordering";
$submenuconn = $conn->query($submenu);
//Als er het id van een artikel niet leeg is (dus als er artikelen onder hangen) OF als er subcategorieeen aanwezig zijn:
if(!empty($menu['content_id']) OR $subcats == 'true'){
$menuresult .= '<ul class="sub-menu">';
//Loop het resultaat
while($submenu = $submenuconn->fetch_assoc()){
$menuresult .= '<li><a href="'.$menu['cat_alias'].'/'.$submenu['alias'].'">'.$submenu['title'].'</a></li>';
}
// Plak de categorieen onder artikelen
$menuresult .= $subcatmenulijst;
$menuresult .= '</ul>';
}
$menuresult .= '</li>';
}
echo $menuresult;
?>
<li><a href="contact">Contact</a></li>
</ul>
</div>
Gewijzigd op 06/04/2018 11:42:28 door Snelle Jaap
https://crisp.tweakblogs.net/blog/317/formatting-a-multi-level-menu-using-only-one-query.html
Dit is hierin al met een enkele query gerealiseerd, zodat je niet steeds een query in een while() {} hoeft te gebruiken, wat de boel kan vertragen.
Code (php)
Code (php)
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<?php
// menu builder function, parentId 0 is the root
function buildMenu($parentId, $menuData)
{
$html = '';
if (isset($menuData['parents'][$parentId]))
{
$html = '<ul>';
foreach ($menuData['parents'][$parentId] as $itemId)
{
$html .= '<li>' . $menuData['items'][$itemId]['name'];
// find childitems recursively
$html .= buildMenu($itemId, $menuData);
$html .= '</li>';
}
$html .= '</ul>';
}
return $html;
}
// output the menu
echo buildMenu(0, $menuData);
?>
// menu builder function, parentId 0 is the root
function buildMenu($parentId, $menuData)
{
$html = '';
if (isset($menuData['parents'][$parentId]))
{
$html = '<ul>';
foreach ($menuData['parents'][$parentId] as $itemId)
{
$html .= '<li>' . $menuData['items'][$itemId]['name'];
// find childitems recursively
$html .= buildMenu($itemId, $menuData);
$html .= '</li>';
}
$html .= '</ul>';
}
return $html;
}
// output the menu
echo buildMenu(0, $menuData);
?>
En dit werkt met recursie, en dat is ook het ingrediënt die je nodig hebt in zulke situaties.
Gewijzigd op 06/04/2018 11:57:13 door - Ariën -
Zitten je waardes wel op de juiste manier in je array?
Code (php)
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Array
(
[items] => Array
(
[32] => Array
(
[cat_id] => 32
[level] => 3
[parent_id] => 30
[cat_title] => Subsubcat
[cat_alias] => subsubcat
[published] => 1
[rgt] => 30
[state] =>
[content_id] =>
[catid] =>
[content_title] =>
[content_alias] =>
)
[30] => Array
(
[cat_id] => 30
[level] => 2
[parent_id] => 16
[cat_title] => Subcat
[cat_alias] => subcat
[published] => 1
[rgt] => 31
[state] => 1
[content_id] => 15
[catid] => 30
[content_title] => Subart 1
[content_alias] => subart-1
)
[31] => Array
(
[cat_id] => 31
[level] => 2
[parent_id] => 16
[cat_title] => Subcat 2
[cat_alias] => subcat-2
[published] => 1
[rgt] => 33
[state] =>
[content_id] =>
[catid] =>
[content_title] =>
[content_alias] =>
)
[16] => Array
(
[cat_id] => 16
[level] => 1
[parent_id] => 1
[cat_title] => Baden
[cat_alias] => baden
[published] => 1
[rgt] => 34
[state] => 1
[content_id] => 2
[catid] => 16
[content_title] => Bad 1
[content_alias] => bad1
)
[17] => Array
(
[cat_id] => 17
[level] => 1
[parent_id] => 1
[cat_title] => Meubels
[cat_alias] => meubels
[published] => 1
[rgt] => 36
[state] =>
[content_id] =>
[catid] =>
[content_title] =>
[content_alias] =>
)
[33] => Array
(
[cat_id] => 33
[level] => 2
[parent_id] => 18
[cat_title] => Douchedeuren
[cat_alias] => douchedeuren
[published] => 1
[rgt] => 39
[state] => 1
[content_id] => 17
[catid] => 33
[content_title] => Nisdeur met profiel
[content_alias] => nisdeur-met-profiel
)
[34] => Array
(
[cat_id] => 34
[level] => 2
[parent_id] => 18
[cat_title] => Douchewanden
[cat_alias] => douchewanden
[published] => 1
[rgt] => 41
[state] => 1
[content_id] => 23
[catid] => 34
[content_title] => Walk in douchewand
[content_alias] => walk-in-douchewand
)
[35] => Array
(
[cat_id] => 35
[level] => 2
[parent_id] => 18
[cat_title] => Douchkabines
[cat_alias] => douchkabines
[published] => 1
[rgt] => 43
[state] => 1
[content_id] => 26
[catid] => 35
[content_title] => Vierkante cabine met dubbel swingdeur
[content_alias] => vierkante-cabine-met-swingdeur
)
[36] => Array
(
[cat_id] => 36
[level] => 2
[parent_id] => 18
[cat_title] => Badwand
[cat_alias] => badwand
[published] => 1
[rgt] => 45
[state] => 1
[content_id] => 31
[catid] => 36
[content_title] => badwand
[content_alias] => badwand
)
[18] => Array
(
[cat_id] => 18
[level] => 1
[parent_id] => 1
[cat_title] => Douche
[cat_alias] => douche
[published] => 1
[rgt] => 46
[state] => 1
[content_id] => 5
[catid] => 18
[content_title] => Douche 1
[content_alias] => douche-1
)
[19] => Array
(
[cat_id] => 19
[level] => 1
[parent_id] => 1
[cat_title] => Toilet
[cat_alias] => toilet
[published] => 1
[rgt] => 48
[state] =>
[content_id] =>
[catid] =>
[content_title] =>
[content_alias] =>
)
[20] => Array
(
[cat_id] => 20
[level] => 1
[parent_id] => 1
[cat_title] => Kranen
[cat_alias] => kranen
[published] => 1
[rgt] => 50
[state] =>
[content_id] =>
[catid] =>
[content_title] =>
[content_alias] =>
)
[21] => Array
(
[cat_id] => 21
[level] => 1
[parent_id] => 1
[cat_title] => Tegels
[cat_alias] => tegels
[published] => 1
[rgt] => 52
[state] =>
[content_id] =>
[catid] =>
[content_title] =>
[content_alias] =>
)
[22] => Array
(
[cat_id] => 22
[level] => 1
[parent_id] => 1
[cat_title] => Verwarming
[cat_alias] => verwarming
[published] => 1
[rgt] => 54
[state] =>
[content_id] =>
[catid] =>
[content_title] =>
[content_alias] =>
)
[23] => Array
(
[cat_id] => 23
[level] => 1
[parent_id] => 1
[cat_title] => Accessoires
[cat_alias] => accessoires
[published] => 1
[rgt] => 56
[state] =>
[content_id] =>
[catid] =>
[content_title] =>
[content_alias] =>
)
[38] => Array
(
[cat_id] => 38
[level] => 2
[parent_id] => 37
[cat_title] => wastafels
[cat_alias] => wastafels
[published] => 1
[rgt] => 59
[state] =>
[content_id] =>
[catid] =>
[content_title] =>
[content_alias] =>
)
[37] => Array
(
[cat_id] => 37
[level] => 1
[parent_id] => 1
[cat_title] => wastafels
[cat_alias] => wastafels
[published] => 1
[rgt] => 60
[state] =>
[content_id] =>
[catid] =>
[content_title] =>
[content_alias] =>
)
)
[parents] => Array
(
[30] => Array
(
[0] => 32
)
[16] => Array
(
[0] => 30
[1] => 31
)
[1] => Array
(
[0] => 16
[1] => 17
[2] => 18
[3] => 19
[4] => 20
[5] => 21
[6] => 22
[7] => 23
[8] => 37
)
[18] => Array
(
[0] => 33
[1] => 34
[2] => 35
[3] => 36
)
[37] => Array
(
[0] => 38
)
)
)
(
[items] => Array
(
[32] => Array
(
[cat_id] => 32
[level] => 3
[parent_id] => 30
[cat_title] => Subsubcat
[cat_alias] => subsubcat
[published] => 1
[rgt] => 30
[state] =>
[content_id] =>
[catid] =>
[content_title] =>
[content_alias] =>
)
[30] => Array
(
[cat_id] => 30
[level] => 2
[parent_id] => 16
[cat_title] => Subcat
[cat_alias] => subcat
[published] => 1
[rgt] => 31
[state] => 1
[content_id] => 15
[catid] => 30
[content_title] => Subart 1
[content_alias] => subart-1
)
[31] => Array
(
[cat_id] => 31
[level] => 2
[parent_id] => 16
[cat_title] => Subcat 2
[cat_alias] => subcat-2
[published] => 1
[rgt] => 33
[state] =>
[content_id] =>
[catid] =>
[content_title] =>
[content_alias] =>
)
[16] => Array
(
[cat_id] => 16
[level] => 1
[parent_id] => 1
[cat_title] => Baden
[cat_alias] => baden
[published] => 1
[rgt] => 34
[state] => 1
[content_id] => 2
[catid] => 16
[content_title] => Bad 1
[content_alias] => bad1
)
[17] => Array
(
[cat_id] => 17
[level] => 1
[parent_id] => 1
[cat_title] => Meubels
[cat_alias] => meubels
[published] => 1
[rgt] => 36
[state] =>
[content_id] =>
[catid] =>
[content_title] =>
[content_alias] =>
)
[33] => Array
(
[cat_id] => 33
[level] => 2
[parent_id] => 18
[cat_title] => Douchedeuren
[cat_alias] => douchedeuren
[published] => 1
[rgt] => 39
[state] => 1
[content_id] => 17
[catid] => 33
[content_title] => Nisdeur met profiel
[content_alias] => nisdeur-met-profiel
)
[34] => Array
(
[cat_id] => 34
[level] => 2
[parent_id] => 18
[cat_title] => Douchewanden
[cat_alias] => douchewanden
[published] => 1
[rgt] => 41
[state] => 1
[content_id] => 23
[catid] => 34
[content_title] => Walk in douchewand
[content_alias] => walk-in-douchewand
)
[35] => Array
(
[cat_id] => 35
[level] => 2
[parent_id] => 18
[cat_title] => Douchkabines
[cat_alias] => douchkabines
[published] => 1
[rgt] => 43
[state] => 1
[content_id] => 26
[catid] => 35
[content_title] => Vierkante cabine met dubbel swingdeur
[content_alias] => vierkante-cabine-met-swingdeur
)
[36] => Array
(
[cat_id] => 36
[level] => 2
[parent_id] => 18
[cat_title] => Badwand
[cat_alias] => badwand
[published] => 1
[rgt] => 45
[state] => 1
[content_id] => 31
[catid] => 36
[content_title] => badwand
[content_alias] => badwand
)
[18] => Array
(
[cat_id] => 18
[level] => 1
[parent_id] => 1
[cat_title] => Douche
[cat_alias] => douche
[published] => 1
[rgt] => 46
[state] => 1
[content_id] => 5
[catid] => 18
[content_title] => Douche 1
[content_alias] => douche-1
)
[19] => Array
(
[cat_id] => 19
[level] => 1
[parent_id] => 1
[cat_title] => Toilet
[cat_alias] => toilet
[published] => 1
[rgt] => 48
[state] =>
[content_id] =>
[catid] =>
[content_title] =>
[content_alias] =>
)
[20] => Array
(
[cat_id] => 20
[level] => 1
[parent_id] => 1
[cat_title] => Kranen
[cat_alias] => kranen
[published] => 1
[rgt] => 50
[state] =>
[content_id] =>
[catid] =>
[content_title] =>
[content_alias] =>
)
[21] => Array
(
[cat_id] => 21
[level] => 1
[parent_id] => 1
[cat_title] => Tegels
[cat_alias] => tegels
[published] => 1
[rgt] => 52
[state] =>
[content_id] =>
[catid] =>
[content_title] =>
[content_alias] =>
)
[22] => Array
(
[cat_id] => 22
[level] => 1
[parent_id] => 1
[cat_title] => Verwarming
[cat_alias] => verwarming
[published] => 1
[rgt] => 54
[state] =>
[content_id] =>
[catid] =>
[content_title] =>
[content_alias] =>
)
[23] => Array
(
[cat_id] => 23
[level] => 1
[parent_id] => 1
[cat_title] => Accessoires
[cat_alias] => accessoires
[published] => 1
[rgt] => 56
[state] =>
[content_id] =>
[catid] =>
[content_title] =>
[content_alias] =>
)
[38] => Array
(
[cat_id] => 38
[level] => 2
[parent_id] => 37
[cat_title] => wastafels
[cat_alias] => wastafels
[published] => 1
[rgt] => 59
[state] =>
[content_id] =>
[catid] =>
[content_title] =>
[content_alias] =>
)
[37] => Array
(
[cat_id] => 37
[level] => 1
[parent_id] => 1
[cat_title] => wastafels
[cat_alias] => wastafels
[published] => 1
[rgt] => 60
[state] =>
[content_id] =>
[catid] =>
[content_title] =>
[content_alias] =>
)
)
[parents] => Array
(
[30] => Array
(
[0] => 32
)
[16] => Array
(
[0] => 30
[1] => 31
)
[1] => Array
(
[0] => 16
[1] => 17
[2] => 18
[3] => 19
[4] => 20
[5] => 21
[6] => 22
[7] => 23
[8] => 37
)
[18] => Array
(
[0] => 33
[1] => 34
[2] => 35
[3] => 36
)
[37] => Array
(
[0] => 38
)
)
)
Dit is nu mijn html resultaat:
Code (php)
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<ul id="menu-main-menu" class="main-menu zn_mega_menu">
<li><a href="home">Home</a></li>
<ul class="sub-menu">
<li class="menu-item">
<a href="baden">Baden</a>
<ul class="sub-menu">
<li class="menu-item">
<a href="subcat">Subcat</a>
<ul class="sub-menu">
<li class="menu-item"><a href="subsubcat">Subsubcat</a></li>
</ul>
</li>
<li class="menu-item"><a href="subcat-2">Subcat 2</a></li>
</ul>
</li>
<li class="menu-item"><a href="meubels">Meubels</a></li>
<li class="menu-item">
<a href="douche">Douche</a>
<ul class="sub-menu">
<li class="menu-item"><a href="douchedeuren">Douchedeuren</a></li>
<li class="menu-item"><a href="douchewanden">Douchewanden</a></li>
<li class="menu-item"><a href="douchkabines">Douchkabines</a></li>
<li class="menu-item"><a href="badwand">Badwand</a></li>
</ul>
</li>
<li class="menu-item"><a href="toilet">Toilet</a></li>
<li class="menu-item"><a href="kranen">Kranen</a></li>
<li class="menu-item"><a href="tegels">Tegels</a></li>
<li class="menu-item"><a href="verwarming">Verwarming</a></li>
<li class="menu-item"><a href="accessoires">Accessoires</a></li>
<li class="menu-item">
<a href="wastafels">wastafels</a>
<ul class="sub-menu">
<li class="menu-item"><a href="wastafels">wastafels</a></li>
</ul>
</li>
</ul>
<li><a href="contact">Contact</a></li>
</ul>
<li><a href="home">Home</a></li>
<ul class="sub-menu">
<li class="menu-item">
<a href="baden">Baden</a>
<ul class="sub-menu">
<li class="menu-item">
<a href="subcat">Subcat</a>
<ul class="sub-menu">
<li class="menu-item"><a href="subsubcat">Subsubcat</a></li>
</ul>
</li>
<li class="menu-item"><a href="subcat-2">Subcat 2</a></li>
</ul>
</li>
<li class="menu-item"><a href="meubels">Meubels</a></li>
<li class="menu-item">
<a href="douche">Douche</a>
<ul class="sub-menu">
<li class="menu-item"><a href="douchedeuren">Douchedeuren</a></li>
<li class="menu-item"><a href="douchewanden">Douchewanden</a></li>
<li class="menu-item"><a href="douchkabines">Douchkabines</a></li>
<li class="menu-item"><a href="badwand">Badwand</a></li>
</ul>
</li>
<li class="menu-item"><a href="toilet">Toilet</a></li>
<li class="menu-item"><a href="kranen">Kranen</a></li>
<li class="menu-item"><a href="tegels">Tegels</a></li>
<li class="menu-item"><a href="verwarming">Verwarming</a></li>
<li class="menu-item"><a href="accessoires">Accessoires</a></li>
<li class="menu-item">
<a href="wastafels">wastafels</a>
<ul class="sub-menu">
<li class="menu-item"><a href="wastafels">wastafels</a></li>
</ul>
</li>
</ul>
<li><a href="contact">Contact</a></li>
</ul>
Baden bijvoorbeeld is een topcategorie met parent_id 1, hier hoeft dus geen <ul> omheen.
De 1 geef ik mee (in het voorbeeld script staat namelijk 0, bij mij is 1 het topniveau).
Op deze manier:
Code (php)
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<?PHP
// Maak een nieuwe array om te vullen met onderstaand resultaat
$menuData = array(
'items' => array(),
'parents' => array()
);
// Maak een nieuwe array met simpelweg items en parents, welke gekoppeld zitten aan cat_id/parent_id
while($menu = $menuconn->fetch_assoc())
{
$menuData['items'][$menu['cat_id']] = $menu;
$menuData['parents'][$menu['parent_id']][] = $menu['cat_id'];
}
// functie om menu te maken, $parentId is 1 (de categorieen die geen parent hebben)
function buildMenu($parentId, $menuData)
{
$html = '';
if (isset($menuData['parents'][$parentId]))
{
//print_r($menuData);
$html = '<ul class="sub-menu">';
foreach ($menuData['parents'][$parentId] as $itemId)
{
$html .= '<li class="menu-item"><a href="'. $menuData['items'][$itemId]['cat_alias'].'">' . $menuData['items'][$itemId]['cat_title'].'</a>';
// find childitems recursively
$html .= buildMenu($itemId, $menuData);
$html .= '</li>';
}
$html .= '</ul>';
}
return $html;
}
// Echo het resultaat van de functie en geef 1 mee als parent_id
echo buildMenu(1, $menuData);
?>
// Maak een nieuwe array om te vullen met onderstaand resultaat
$menuData = array(
'items' => array(),
'parents' => array()
);
// Maak een nieuwe array met simpelweg items en parents, welke gekoppeld zitten aan cat_id/parent_id
while($menu = $menuconn->fetch_assoc())
{
$menuData['items'][$menu['cat_id']] = $menu;
$menuData['parents'][$menu['parent_id']][] = $menu['cat_id'];
}
// functie om menu te maken, $parentId is 1 (de categorieen die geen parent hebben)
function buildMenu($parentId, $menuData)
{
$html = '';
if (isset($menuData['parents'][$parentId]))
{
//print_r($menuData);
$html = '<ul class="sub-menu">';
foreach ($menuData['parents'][$parentId] as $itemId)
{
$html .= '<li class="menu-item"><a href="'. $menuData['items'][$itemId]['cat_alias'].'">' . $menuData['items'][$itemId]['cat_title'].'</a>';
// find childitems recursively
$html .= buildMenu($itemId, $menuData);
$html .= '</li>';
}
$html .= '</ul>';
}
return $html;
}
// Echo het resultaat van de functie en geef 1 mee als parent_id
echo buildMenu(1, $menuData);
?>
Toevoeging op 06/04/2018 12:46:59:
Ik heb het opgelost door te checken of het parent_id gelijk is aan 1, zo ja gooi er een li omheen ipv een ul. Bedankt voor het op weg helpen!
Gewijzigd op 06/04/2018 12:40:05 door Snelle Jaap
Enne, dat $html .= ..., dat kan ook makkelijker he? Gebruik output buffering :).
Gewijzigd op 06/04/2018 15:55:44 door Thomas van den Heuvel