hi all,
ive this code that print all the categories with parent_id= 0
and now i want to get nested the relative sub categories (id != 0)
how can i get that ?
i saw this but seems that the extension its not avaible to download now
Indent For Nested Checkboxes
<?php
echo CHtml::activeCheckBoxList(
$model,
'categoryIds',
Chtml::listData(Category::model()->findAll('parent_id = 0'),'id','nome')
);
?>
thank you all for the help !! 
do you mean:
fetch all the parents childs tree ?
fetch childs from a given root node ?
fetch chils node from a given node ?
You choose to organise your category tree with a parent_id field in your database so maybe this wiki article can help you
i mean all the childs of every single node…
thank you for the article…im going to read it…
you could write a function in Category
public function getChilds() {
return Category::model()->findAll(‘parent_id = :id’,array(’:id’=> $this->id))
}
and for each parent with Category::model()->findAll(‘parent_id = 0’) run the above function to get the their childs
for examble $parents=Category::model()->findAll(‘parent_id = 0’)
foreach ($parents as $parent) {
$parent->getChilds() //now you have and related childs
}
thank you konapaz!
so i add this function to my Category model
public function getChilds() {
return Category::model()->findAll('parent_id = :id',array(':id'=> $this->id)) ;
}
can you help me how to put the foreach loop in my form ?
this its my code:
<?php
echo CHtml::activeCheckBoxList(
$model,
'categoryIds',
Chtml::listData(Category::model()->findAll('parent_id = 0'),'id','nome')
);
?>
thank you again
I think you should use CTreeView
http://www.yiiframework.com/doc/api/1.1/CTreeView
http://www.yiiframework.com/wiki/215/adding-class-and-links-to-ctreeview-node/
foreach ($parents as $parent) {
$childs=$parent->getChilds();
//–add code for parent item in CTreeView in root
foreach ($childs as $child) {
//–add code for child item in CTreeView in parent item
}
}
Read the wiki how achieve that
hi all,
im still tryng to resolve this issue…
in the form viem ive this code:
echo CHtml::activeCheckBoxList(
$model,
'categoryIds',
$parents = Chtml::listData(Category::model()->findAll('parent_id = 0'),'id','nome') );
foreach ($parents as $parent) {
Category::model()->getChilds() ;
}
in the Category model ive:
public function getChilds() {
return Category::model()->findAll('parent_id = :id',array(':id'=> $this->id));
}
but it doesnt work!! where im wrong ?
thank you all!!
You have incorrect code: Category::model()->getChilds() ;
foreach ($parents as $parent) {
//Category::model()->getChilds() ; /this not get child of the parent BUT
$child= $parent->getChilds() ; //to get the childs of Parent
}
thank you a lot for the reply but it still does not work…it doesnt print anything…
i can figure out where its the mistake…
i now have this code:
CATEGORY model
public function getChilds() {
return Category::model()->findAll('parent_id = :id',array(':id'=> $this->id));
}
_form.php:
echo CHtml::activeCheckBoxList(
$model,
'categoryIds',
$parents = Chtml::listData(Category::model()->findAll('parent_id = 0'),'id','nome') );
foreach ($parents as $parent) {
//$child= $parent->getChilds() ;//with this i get an error..so ive changed in
$child = Category::model()->getChilds() ;
}
check your variables with var_dump.
Also check if you have categories with valid parent_id (check your database)
thanks konapaz…yes i put:
var_dump($this->id);
inside getChilds function
and it is NULL…I cannot understand why…
database categories are OK
//this is wrong! $parents = Chtml::listData(Category::model()->findAll(‘parent_id = 0’),‘id’,‘nome’) );
$parents = Category::model()->findAll(‘parent_id = 0’); //correct
foreach ($parents as $parent) {
var_dump ($parent); //check that
$child= $parent->getChilds() //is correct if above is correct
the $child = Category::model()->getChilds(); //is wrong because not loaded any ‘parent’
}
echo CHtml::activeCheckBoxList(
$model,
'categoryIds',
//$parents = Chtml::listData(Category::model()->findAll('parent_id = 0'),'id','nome') );
$parents = Category::model()->findAll('parent_id = 0'));
foreach ($parents as $parent) {
var_dump ($parent); //check that <img src='http://www.yiiframework.com/forum/public/style_emoticons/default/smile.gif' class='bbc_emoticon' alt=':)' />
$child= $parent->getChilds(); //is correct if above is correct
//the $child = Category::model()->getChilds(); //is wrong because not loaded any 'parent'
}
thank you for your help…but i got this error now…
Object of class Category could not be converted to string
public static function tag($tag,$htmlOptions=array(),$content=false,$closeTag=true)
139 {
140 $html='<' . $tag . self::renderAttributes($htmlOptions);
141 if($content===false)
142 return $closeTag ? $html.' />' : $html.'>';
143 else
144 return $closeTag ? $html.'>'.$content.'</'.$tag.'>' : $html.'>'.$content;
145 }
so something in this code its worng 
I see that if i delete
echo CHtml::activeCheckBoxList(
$model,
'categoryIds',
before
$parents = Category::model()->findAll('parent_id = 0');
it works…thank you very much konapaz…im going to see if all its ok…
oflodor,
Try to run only the below code without CHtml::activeCheckBoxList to ensure getting of correct data
$parents = Category::model()->findAll(‘parent_id = 0’));
foreach ($parents as $parent) {
$child = $parent->getChilds();
var_dump($child);
}
And if its ok the next step it will be to include in some widget view (will see)
yes it works…and now you advise to create a widget ? 
mmm im trying…if you have some suggestion… 
thanks a lot!!
Welcome
The widgets reside in folder structure
protected/components/yourWidget.php
protected/components/view/yourWidgetView.php (name of file is not restricted)
yourWidget.php sould has the below code
class yourWidget extends CWidget {
public function init(){…initialize code here…}
public function run() {
…your render code here…like… $this>render(‘yourWidgetView’); …}
}
and in your view of controller/action you have to put this code
$this->widget(‘mywidget’);
for more details look a related post
or wiki
http://www.yiiframework.com/wiki/23/how-to-create-a-breadcrumb-widget/
thank you a lot konapaz!! ill let you know about…
Hi oflodor
you should "start a new topic" for your widget issues because is different by "Nested Sub Categories"
Thank you
you are right!! thanks…