How to Display Discussion from all the Categories except one on Discussions page?

sahotataran · October 2011

Can anybody help with that?
@Todd @Lincoln @Tim @Underdog

Thanks

x00 · October 2011

Nested sql is rarely a good idea especial in an IN very slow, and often not configured in mySQL, also if you look in the discussion model they are not using an JOIN instead they zip the categories data to the discussion data programmatically after the discussion dat has bee got. This will be for performance reasons.

SO for this reason, it would be better to simply remove the offending data before it is renderered.

Something like:

public function DiscussionsController_Render_Before(&$Sender){
   if (strtolower($Sender->RequestMethod) != 'index') return;
    foreach (CategoryModel::Categories() As $Category) {
       if ($Category['Name'] == 'Blog'){
		  $ID = $Category['CategoryID'];
		  break;
       }
    }
    if(!$ID) return;
    $Discussions = $Sender->Data('Discussions');
    
    foreach($Discussions As &$Discussion){
	if($Discussion['CategoryID']==$ID){
		$Discussion = null;
	}
    }
    $Discussions = array_filter($Discussions);
    $Sender->SetData('Discussions',$Discussions);
}

x00 · October 2011

Sorry this is more like it

public function DiscussionsController_Render_Before(&$Sender){
   if (strtolower($Sender->RequestMethod) != 'index') return;
    $Discussions = $Sender->Data('Discussions');
   
  $DiscussionsFiltered =array();
    foreach($Discussions As  $Discussion ){
	if($Discussion->Category!=='Blog'){
		$DiscussionsFiltered[]=$Discussion;
	}
    }
	$DiscussionsFiltered =  new Gdn_DataSet($DiscussionsFiltered);
         $Sender->DiscussionData =$DiscussionsFiltered;
	  $Sender->Data('Discussions',$DiscussionsFiltered);
}

Todd · October 2011

Please stop mentioning us on all of your questions. I don't understand your question.

sahotataran · October 2011

m sorry Todd. its only you guys who develop the framework know about it inside out. so thats y i used to tag it on ur name. i wont do that again.
cheers

camo · October 2011

sahotataran quite simply wants to hide discussions from a given single category, so they don't appear on the 'all discussions' page.

Not sure how that could be done, but I'm assuming when the query is made to mysql, to display all discussions, it must be specified to omit the specific category, with some kind of 'if' clause.

UnderDog · October 2011

I've edited camo's post a bit.
If the mysql query needs to be altered to omit a specific category, it's not that easy to resolve. I'll give it some thought, sahotataran.

sahotataran · October 2011

actually the thing is i am using NillaBlog to display my one category as Blog. so i want in all discussions, that Category is removed from there and rest all posts from categories are displayed in all discussions.

Thanks guys

UnderDog · October 2011

Oh man... so abstract...
sahotataran can you give me 2 examples please? Let's do an example with PHP scripts.
Your category on NillaBlog is "Forum Scripts". The forums are "Vanilla", "PhpBB" and "SMF". Tell what you need in which situation :-)

sahotataran · October 2011

so let me explain my situation.
say -> i have 4 categories named NEWS, ARTICLES, FEATURED, OTHER
using NillaBlog i have Displayed ARTICLES category page as BLOG and its url categories/articles - i am using as home page.

u know how on discussions page /DISCUSSIONS - all the discussions are listed - which are from NEWS, ARTICLES, FEATURED, OTHER

but i dont want to display ARTICLES in this list of DISCUSSIONS

so i wanted to know if that is possible

sahotataran · October 2011

Oh man... so abstract...

and for me underdog experimenting is never an abstract :D

UnderDog · October 2011

but i dont want to display ARTICLES in this list of DISCUSSIONS

Select * from Discussions where categoryId not IN (Select * from Categories where CategoryName = "Articles")

Experiment with this SQL a bit, it's not the most perfect SQL I've written.
You can hardcode the category ID of the Articles category. You can replace the "NOT IN" with something else.

sahotataran · October 2011

sorry underdog but where do i put this in? shall i use something like DiscussionsController_Render_Before - in my template as a hook ??????

x00 · October 2011

Hmm the above won't work perfectly with the pager, for that you will have to dance around using the DiscussionModel

get the category id before the discussions query is built. Then add the where clause to the query builder (no join). Then this will return the results you want.

sahotataran · October 2011

thanks @x00 i will try these and see how far i can go

x00 · October 2011

To be honest best hook the

DiscussionController_Index_Before

store the category Id in a class variable then with

DiscussionModel_BeforeGet_Handler

add the where

$Sender->SQL->Where('d.CategoryID <>', $this->BlogCategoryID);

This would produce better results. This all stimulates on if(strtolower($Sender->RequestMethod) != 'index') return;

if (!isset($this->BlogCategoryID)) return;

respectively

sahotataran · November 2011

hi @x00

i did something like this on my home page

<?php $DiscussModel = new DiscussionModel();<br />$whereas = array('CategoryID <>' => $catid);
$discussions = $DiscussModel -> Get(0, 10, $whereas)->Result();
$discussionController = new DiscussionsController();
$discussionController->DiscussionData = $discussions;
$discussionController->View = 'discussions';
$discussionController->Render();
//$DiscussModel->ToString();
 ?>

but its not loading DISCUSSIONS VIEW and gives error as

Fatal Error in DiscussionsController.FetchViewLocation();
Could not find a 'discussions' view for the 'discussions' controller in the '' application.
The error occurred on or near: C:\xampp\htdocs\vanilla2\library\core\class.controller.php

776:          $this->_ViewLocations[$LocationName] = $ViewPath;

777:       }

778:       // echo '['.$LocationName.'] RETURNS ['.$ViewPath.']';

779:       if ($ViewPath === FALSE && $ThrowError)

780:          trigger_error(ErrorMessage("Could not find a '$View' view for the '$ControllerName' controller in the '$ApplicationFolder' application.", $this->ClassName, 'FetchViewLocation'), E_USER_ERROR);

781: 

782:       return $ViewPath;

783:    }

784:

can you please help me with it????
Thanks in advance

x00 · November 2011

What are you trying to do? Embed?

sahotataran · November 2011

no i have this in my default.master.php which trigers only if its home page.
i check if the URL is my home page and if its home page then
line wise explanation
1.new discussion model
2. whereas option which we pass to Get method in DiscussionModel (i am displaying all discussions except a particular category categoryID)
3. get result from Get function in DiscussionModel which returns me recently posted 10 discussions which are not from particular CATEGORY and save its result in variable $discussions
4. create a new controller for discussionsController
5. i pass its DiscussionsData as result from my above DiscussionModel resultset
6. then i try to load view 'discussions'
7. render it - but the above error

sahotataran · November 2011

fixed it guys. was just lost and got to right track after lunch :)
Thanks x00

ddumont · November 2011

@sahotataran
Please consider contributing this as a feature to the NillaBlog project. I suspect others may want this functionality as well.

If you don't know how to pull the code and submit a patch, try to come up with a working example plugin for your forum where you have it working and submit the working code as part of a ticket. I'll see if I can work it into the settings of the project so that others may benefit.

sahotataran · November 2011

sure @ddumont - i will be submitting the working example and also the demo URL soon - as soon as i finish out with the layout and stuff - CSS. i will send you the whole code i had used and then you can consider it putting into your working example of NillaBlog.

Thanks

sahotataran · November 2011

@ddumont i had a quick question - is there anyway i can set the number of discussions to be displayed on the BLOG category page?
e.g generally we set the number of discussions we can show on category page through Dashboard->Forum->Advanced
but suppose if it choose 50 there and if we try to display 50 posts in NillaBlog Category then the page is going to get very very long.
so is there anyway we can restrict the BLOG category page discussions count to only 10 or 15?????
Thanks

ddumont · November 2011

NillaBlog has an option in the plugin config that lets you say how many posts you want to display instead of the global number, yes.

sahotataran · November 2011

Thanks ddumont i just downloaded the latest version. thanks again.
i have a hack to display images if a user attaches an image with the post. shall i pm to u?

x00 · November 2011

This is not very MVC, You are using a view for your logic. Views should be kept clean and should only concern display issues (and some formatting issues too). There are some forgiveable exceptions but this is way overboard.

Likely there is better way to do this.

x00 · November 2011

DisscussionModel_BeforeGet_Handler

You should be able to set

$Sender->SQL->Limit($Limit, $Offset); over-riding the default.

also wheres

You can use if(strtolower($Sender->RequestMethod) != 'index') return; before that.

Have a look a class.discussionmodel.php Get you see the BeforeGet event, you even have wheres event args

sahotataran · November 2011

@ddumont
i restricted my home page to display only 10 latest posts which are not from my BLOG category using the hook in themes as below:

 public function DiscussionsController_Render_Before($Sender) {
		$this->_AddButton($Sender, 'NewDiscussionModule');
		$pageURL = 'http'; if ($_SERVER["HTTPS"] == "on") {$pageURL .= "s";} $pageURL .= "://"; if ($_SERVER["SERVER_PORT"] != "80") {  $pageURL .= $_SERVER["SERVER_NAME"].":".$_SERVER["SERVER_PORT"].$_SERVER["REQUEST_URI"]; } else {  $pageURL .= $_SERVER["SERVER_NAME"].$_SERVER["REQUEST_URI"]; }
		 if ($pageURL == 'MY HOME PAGE URL') {
		 $Offset = 0;
		 $Limit = 10;
		 $Whereas = array("CategoryID <>" => 'MY BLOG CATEGORY ID' );
		 $DiscussionModel = new DiscussionModel();
		 $Sender->DiscussionData = $DiscussionModel->Get($Offset, $Limit, $Whereas);
		 $CountDiscussions = count($DiscussionModel->Get($Offset, $Limit, $Whereas));
		 $Sender->Data('Discussions', $Sender->DiscussionData);
		 $Sender->SetData('CountDiscussions', $CountDiscussions);
		/* ======= this was the code given by x00 =========
list($Page, $Limit) = OffsetLimit(10, 0);
    $Discussions = $Sender->Data('Discussions');			   
			  $DiscussionsFiltered =array();
				foreach($Discussions As  $Discussion ){
				if($Discussion->Category!=='articles'){
					$DiscussionsFiltered[]=$Discussion;
				}
				}
				$DiscussionsLeft = count($DiscussionsFiltered);
				//$DiscussionsFiltered =  new Gdn_DataSet($DiscussionsFiltered);
					 $Sender->DiscussionData =$DiscussionsFiltered;
				  $Sender->Data('Discussions',$DiscussionsFiltered); 
===============================*/
		}

}

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How to Display Discussion from all the Categories except one on Discussions page?

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