Hi there,

Not sure if this is a bug or if this function needs changing for 3.1 I am using the function below to filter out some records displayed in model admin as per the example on the reference page.

public function getList() {
        $list = parent::getList();
        // Always limit by model class, in case you're managing multiple
        if($this->modelClass == 'Producer') {
            $list->exclude('New', '0');
        }
        return $list;
    }

This used to work in version 3.0.2 but with 3.1 beta 3 its just not working any more. Any pointers?

Mick

Hi cumquat. DataLists are now immutable, meaning you'll need to do this:

public function getList() { 
    $list = parent::getList(); 
    // Always limit by model class, in case you're managing multiple 
    if($this->modelClass == 'Producer') { 
        $list = $list->exclude('New', '0'); 
    } 
    return $list; 
}

Note the "$list = " addition.

Thanks for this, I saw it mention immutable eventually in the change log but had no idea what that meant.
Will give this a go when I get home.

Thanks again

Mick
##Update##
All working, cheers for that.

I was trying to figure out what was going on for a while when getting 'GridFieldPaginator expects an SS_Limitable' error then saw this post.

Just to add to the solution above I found that when using the filters I needed to add a couple of checks for empty values when using a dropdown field for example with an empty value as the default value, i.e. when resetting the filters in Model Admin etc.

public function getList() {
        if($this->modelClass == 'Product'){
		$list = parent::getList();
                $params = $this->request->requestVar('q');
                if(isset($params['Status']) && $params['Status'] != null || $params['Status'] != '') $list = 'whatever filter/query you are using';
                return $list;
        }

Hope this helps others too.

Many Thanks,
James.