Mapping Table Issue - My Forums

Mapping Table Issue

harveyev — Oct 02, 2015, 07:01 PM

I'm having trouble with a mapping table. When I call getMany(), it does return the expected number of items. But when I iterate over those items to get the name, it returns nothing. Here is an excerpt for my schema file for the mapped tables:

I've been over this so many times I think I'm overlooking something silly. Can anyone see an issue with this?

My snippet call is:

    //get category info
    $pcategories = $position->getMany('PositionCategories');
    $length = count($pcategories);
    error_log("Name: " . $this_title . " Count: " . $length);
    foreach ($pcategories as $pcategory) {
       $this_name = $pcategory->get('name');
       $thisCategoryNames .= $this_name . " ";
       array_push($positionClasses,$this_name);
    }
    error_log("\tCategories Found :" . $thisCategoryNames);//<-- comes back empty

TIA.

Re: Mapping Table Issue

harveyev — Oct 03, 2015, 06:38 AM

Makes sense. Thanks Bruno.

Re: Mapping Table Issue (Best Answer)

Bruno17 — Oct 03, 2015, 12:03 AM

well, with getMany, you get the rtPositionCategoriesMap - items, but not the related
rtPositionCategories - items.

you could either create a query with a join and get the items with getCollection.
Maybe there is also a way with getCollectionGraph

or try:

//get category info
$pcategories = $position->getMany('PositionCategories');
$length = count($pcategories);
error_log("Name: " . $this_title . " Count: " . $length);
foreach ($pcategories as $pcategory) {
   if ($category = $pcategory->getOne('Category')){
       $this_name = $category->get('name');
       $thisCategoryNames .= $this_name . " ";
       array_push($positionClasses,$this_name);
   }
}
error_log("\tCategories Found :" . $thisCategoryNames);//<-- comes back empty

to get everything within one joined query might be faster, than calling getOne many times.