I have three models that are something like Grid, GridItem, and Item. Grid has pages, rows, and cols. GridItem has grid_id, item_id, page, row, and col. Item is a list of predefined objects.

I need to be able to mass-create GridItems when Grid is created. I already have an event listener set up to listen for the proper event. So far, I'm running a for loop with pages, rows, and cols with the last loop being where I create my GridItem model with only page, row, and col listed:

public function handle(Grid $grid)
{
    for ($page=0; $page < $grid->pages; $page++) { 
        for ($row=0; $row < $grid->rows; $row++) { 
            for ($col=0; $col < $grid->cols; $col++) { 
                GridItem::create(['col' => $col, 'row' => $row, 'page' => $page])
                    ->item()->associate(Item::find(1))
                    ->grid()->associate($grid);
            }
        }
    }
}

I have also tried using Grid and Item::find(1) first and associating/saving from there, but they all fail with foreign key constraint errors.

How do I associate/save two relationships at once?