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*- pike
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Wednesday 09 September 2009 7:44:20 am
I noticed relatedobject and reverserelatedobjects fetches dont implement offset and limit:
http://ez.no/doc/ez_publish/technical_manual/4_0/reference/modules/content/fetch_functions/related_objects
http://ez.no/doc/ez_publish/technical_manual/4_0/reference/modules/content/fetch_functions/reverse_related_objects Since fetching and slicing them in tpl seemed to be heavy, i moved that functionality to php. For anyone who's interested, here's the code. Note you need to have an extension available where you can tuck this in. In a class definition that holds some static functions, you'll add the php fetch. In your extensions function definition, you reference that. In your template, you call a fetch. In detail: In your libraries class somewhere, add
static function fetchRelatedObjectsSlice(
$object_id,
$attribute_identifier=0,
$all_relations=false,
$offset=0, $limit=0, $reverse=false,
$group_by_attribute=true,
$sort_by=null,
$ignore_visibility=true,
$istplfetch=false
) {
eZDebug::writeDebug("fetchRelatedObjectsSlice","MyLibraryLib");
/*
should do the same as related_objects
http://ez.no/doc/ez_publish/technical_manual/4_0/reference/modules/content/fetch_functions/related_objects
http://ez.no/doc/ez_publish/technical_manual/4_0/reference/modules/content/fetch_functions/reverse_related_objects
but implements a limit, offset, reverse.
its a lot quicker to slice an array in php than in tpl.
the strange defaults mimic the ezp fetches defaults, too
*/
$params = array();
$params['AllRelations'] = $all_relations;
$params['SortBy'] = $sort_by;
$params['IgnoreVisibility'] = $ignore_visibility;
$object = eZContentObject::fetch($object_id);
$allrelated = $object->relatedObjects(
false,
false,
$attribute_identifier,
$group_by_attribute,
$params,
$reverse
);
$related = ($limit)?array_slice($allrelated,$offset,$limit):array_slice($allrelated,$offset);
if ($istplfetch) return array( 'result' => $related );
else return $related;
}
In the function_definition of your extension, add
$FunctionList['related_objects_slice'] = array(
'name' => 'related_objects',
'operation_types' => array( 'read' ),
'call_method' => array(
'include_file' => 'path_to_your_class_lib.php',
'class' => 'your_class_name',
'method' => 'fetchRelatedObjectsSlice'
),
'parameter_type' => 'standard',
'parameters' => array(
array(
'name' => 'object_id',
'type' => 'integer',
'required' => true
),
array(
'name' => 'attribute_identifier',
'type' => 'integer',
'required' => false,
'default' => 0
),
array(
'name' => 'all_relations',
'type' => 'boolean',
'required' => false,
'default' => false
),
array(
'name' => 'offset',
'type' => 'integer',
'required' => false,
'default' => 0
),
array(
'name' => 'limit',
'type' => 'integer',
'required' => false,
'default' => 0
),
array(
'name' => 'reverse',
'type' => 'boolean',
'required' => false,
'default' => false
),
array(
'name' => 'group_by_attribute',
'type' => 'boolean',
'required' => false,
'default' => false
),
array(
'name' => 'sort_by',
'type' => 'array',
'required' => false,
'default' => null
),
array(
'name' => 'ignore_visibility',
'type' => 'boolean',
'required' => false,
'default' => true
),
array(
'name' => 'istplfetch',
'type' => 'boolean',
'required' => false,
'default' => true
)
)
);
And in your template, call
{set relnodes = fetch('myextension','related_objects_slice',hash(
'object_id',$node.object.id,'all_relations',true(),
'offset',$offset,'limit',$limit,'reverse',true(),
'ignore_visibility',false()
))}
Note it is only slightly quicker than the original calls; it still fetches all objects, but it slices the array in php, thats all.
$2c,
*-pike
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The class eZContentObjectTreeNode does.
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