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TOPIC: Dynamic loading of the combox from a joomla table

Dynamic loading of the combox from a joomla table 16 years 1 week ago #7307

Hi everyone!

I have a forms which holds 2 combo-boxes.
I would like to load data from a table into the first combobox.
Also i would like to load data from a table into combobox2 but only filtered by the selection of the first combobox.

Has anyone done this before en how.

A sample or direction to a solution is appreciated.

Thx in advance,

Beertje_007
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Re:Dynamic loading of the combox from a joomla table 16 years 1 week ago #7310

  • bogdanc
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Hello,

this is how you should collect data for the first combo box.

First of all create a new Combo box. Then in the items field paste the following code:
//<code>
$db = JFactory::getDBO();
$db->setQuery("Select id, username from #__users order by username");
$users=$db->loadObjectList();
 
$str = Array('|Please select');
foreach ($users as $user)
{
	$str[]=$user->id.'|'.$user->username;
}
$str = implode("\n",$str);
return $str;
//</code>

This code selects the user id and puts it as value and the username is put as label for the combo box.

I will get back to you for the second issue, since it requires AJAX to be implemented, and I have to perform some tests.
Last Edit: 16 years 1 week ago by bogdanc.
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Re:Dynamic loading of the combox from a joomla table 16 years 1 week ago #7311

  • bogdanc
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back for the second part of your request :)

now.. let's create a drop-down that has all your joomla articles listed, and when you change the selection of the user drop down, the articles will filter the ones created by the users in the first drop down.

create a second combo box, name it "articles" and in the Items field, type this code:
//<code>
$filter = '';
if(isset($_POST['form']['users'])) $filter = " WHERE created_by= '".intval($_POST['form']['users'][0])."'";//change the users with your combobox1 name
$db = JFactory::getDBO();
$db->setQuery("Select id, title from #__content ".$filter." order by title");
$articles=$db->loadObjectList();
 
$str = Array('|Please Select');
foreach ($articles as $article)
{
$str[]=$article->id.'|'.$article->title;
}
$str = implode("\n",$str);
return $str;
//</code>
 
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Re:Dynamic loading of the combox from a joomla table 16 years 1 week ago #7336

Thx bogdanc,

I will try your examples!

Beertje_007
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Re:Dynamic loading of the combox from a joomla table 16 years 1 week ago #7339

  • esham
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:( not working ..
the article id not change after select username
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Re:Dynamic loading of the combox from a joomla table 16 years 1 week ago #7341

bogdanc wrote:
back for the second part of your request :)

now.. let's create a drop-down that has all your joomla articles listed, and when you change the selection of the user drop down, the articles will filter the ones created by the users in the first drop down.

create a second combo box, name it "articles" and in the Items field, type this code:
//<code>
$filter = '';
if(isset($_POST['form']['users'])) $filter = " WHERE created_by= '".intval($_POST['form']['users'][0])."'";//change the users with your combobox1 name
$db = JFactory::getDBO();
$db->setQuery("Select id, title from #__content ".$filter." order by title");
$articles=$db->loadObjectList();
 
$str = Array('|Please Select');
foreach ($articles as $article)
{
$str[]=$article->id.'|'.$article->title;
}
$str = implode("\n",$str);
return $str;
//</code>
 

Hi Bogdanc,

Thanx for the exmaple.
The first combobox works great.
The second one does not react to the first one.

There is no postback.

Do you know what is wrong.

Thanx again,

Beertje_007
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Re:Dynamic loading of the combox from a joomla table 16 years 2 days ago #7418

  • alexp
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Hello,

You have to press the Submit button ion order to reload the drop-down with the new values. Not the best solution ....

I will try to build up a tutorial on how to achieve this with some Ajax scripts...
Please note: my help is not official customer support. To receive your support, submit a ticket by clicking here
Regards,
RSJoomla! Development Team
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The following user(s) said Thank You: ariannejad

Re:Dynamic loading of the combox from a joomla table 15 years 11 months ago #7428

Thx Alexp,

I realy would like an example because this is a major problem i am facing.

Thank you in advance and untill the next mail,

Beertje_007
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Re:Dynamic loading of the combox from a joomla table 15 years 10 months ago #8080

  • proexe
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Hi

Have you been able to sort out any tutorial on this one yet as looking in to using this type of Dynamic Drop-down in one of my forms.

Can you let me know as soon as you can.

Thanks

ProExe
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Re:Dynamic loading of the combox from a joomla table 15 years 9 months ago #8160

  • ifeanyi
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Hi, i am interested in learning how to do this also...any answer?
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  • 1

Read this first!

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