CodeIgniter DataMapper include_related仅包含一个相关模型

Question

I have a Product_faq class which has a $has_many relationship to a Product class. I have a Product class which has a $has_many relationship to the Product_faq class. These two classes are joined using a product_faqs_products table.

I am trying to use the following code to retrieve a specific Product_faq along with the Products associated to it:

$faqs = new Product_faq();
faqs->include_related('product', null, true, true)->get_by_id(25);

foreach($faqs->product as $product){
    echo $product->id.PHP_EOL;
}

There are three products related to this product_faq, but this code is only outputting the first one. Is this the intended functionality? Is there any way for me to include all of the related products on this query?

Answer 1

get_by_id function returns one row because of getting product_faqs_products . id that primary key is 25.

Try where clause with foreign_key following:

$faqs->include_related('product', null, true, true)->where('product_id', 25);