I'm using CActiveDataProvider to populate a webpage showing messages between users. I have a view php file that uses 'zii.widgets.CListView' in conjunction with the CActiveDataProvider.
I'm using a partial _item.php file to render each individual message. The thing is currently each message renders with solid line above each message, per specified by the _item.php file.
<hr style="border-bottom:solid 1px #efefef; border-top:solid 0px #fff;" />
I want to show this line only when the message being displayed previously is from a different user. I reason that to do this I need to be able to get information from the dataprovider about the previous item (or alternatively, the following item). How do I accomplish this?
What it looks like:
user 1: foobar blah blah
user 2: asdlkfj;ajd
user 2: aljs;dfjlkjk
What I want it to look like:
user 1: foobar blah blah
user 2: asdlkfj;ajd
user 2: aljs;dfjlkjk
This is what my controller looks like:
$dataProvider = new CActiveDataProvider('MailboxMessage', array(
'criteria' => array(
'condition' => 'conversation_id=:cid',
'params' => array(
':cid' => $_GET['id']
),
),
'sort' => array(
'defaultOrder' => 'created DESC' // this is it.
),
'pagination' => array('pageSize' =>20),
));
I assume your message history that have order like this
user1: Hi Pete!
--------------------------------
user2: Hi Michael!
user2: Do you think about our plan yet?
--------------------------------
user1: Yes, I do.
Those records in the Message table look like
-----------------------------------------------------------
msg_id | msg | user_id (FK)
-----------------------------------------------------------
12004 Hi Pete! 1
12005 Hi Michael! 2
12006 Do you think about our plan yet? 2
12007 Yes, I do. 1
Add one property $show_line into your Message model and don't forget to make it as safe attribute
$list_msg = Message:model->findAll(); // could be changed by your way to fetch all of messages & sort them by order of message
if(count($list_msg)>2){
for($i=0; $i<count($list_msg);$i++){
if($i < count($list_msg)-1){
//check if owner of current message item is owner of next message also
$list_msg[$i]->show_line = $list_msg[$i]->user_id == $list_msg[$i+1]->user_id; // user_id in my case is FK on Message table. I am not sure what it was in your db but you can customize it to appropriately
}
}
}
//$dataProvider = new CArrayDataProvider('Message');
//$dataProvider->setData($list_msg);
$dataProvider=new CArrayDataProvider($list_msg, array(
'id'=>'msg',
'sort'=>array(
.....
),
'pagination'=>array(
'pageSize'=>20,
),
));
Set that DataProvider into your list view
Then in your item view, you shall capture the boolean show_line to display or hide the hr line
<?php if($data->show_line) {?> <hr .../> <?php } ?>
Above is one way how to make it work, it couldn't match your code exactly.