Laravel Eloquent 关系like查询

Question

I am trying to query categories where product tags is equal to user selected tags in filter bar, Here is the query what I have tried so far:

$categories = Category::with('products');

// selected tags is array which contain tags
if (! empty($selectedTags)) {
    foreach ($categories->get() as $category) {
        $categories = $category->whereHas('products', function ($query) use ($selectedTags) {
            foreach ($selectedTags as $tag) {
                $query->where('tags','LIKE','%'.$tag.'%');
            }
        });
    }
}

$categories = $categories->distinct()->paginate(3);

On First attempt means when I select single checkbox of tag it is working fine but not multiple selected checkboxes

Please note that tags column in product table is comma separated values that's why I am trying to access it via like query.

Answer 1

You just need to be adding to the same builder you started to build the query with instead of using a new builder every iteration of the loop:

$categories = Category::with('products');

if ($selectedTags) {
    $categories->whereHas('products', function ($query) use ($selectedTags) {
        foreach ($selectedTags as $tag) {
            $query->orWhere('tags', 'LIKE', '%'. $tag .'%');
        }
    });
}

$categories = $categories->distinct()->paginate(3);